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Get Table Names with Column Names and Data Types in SQL Server - SQL Server Tutorial
 
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In this video ,we will generate the script that will return us all the table names with column names and data type of those columns. We often need this information. Let's say we are going to prepare mapping document for load the data from Source Database to Destination database. We can get the list of all tables with column names and data types from Source Database and Destination Database and then paste in Excel and map the required input columns to output columns for ETL Process. Blog link with scripts used in video http://sqlage.blogspot.com/2015/02/get-all-tables-with-column-names-and.html
Views: 50746 TechBrothersIT
Dynamic sql table name variable
 
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Text version of the video http://csharp-video-tutorials.blogspot.com/2017/04/dynamic-sql-table-name-variable.html Slides http://csharp-video-tutorials.blogspot.com/2017/04/dynamic-sql-table-name-variable_20.html All SQL Server Text Articles http://csharp-video-tutorials.blogspot.com/p/free-sql-server-video-tutorials-for.html All SQL Server Slides http://csharp-video-tutorials.blogspot.com/p/sql-server.html All SQL Server Tutorial Videos https://www.youtube.com/playlist?list=PL08903FB7ACA1C2FB All Dot Net and SQL Server Tutorials in English https://www.youtube.com/user/kudvenkat/playlists?view=1&sort=dd All Dot Net and SQL Server Tutorials in Arabic https://www.youtube.com/c/KudvenkatArabic/playlists In this video we will discuss how to pass table name dynamically for stored procedure in sql server. This is one of the sql questions that is very commonly asked. I have a web page with a textbox. When I enter a table name in the textbox and when I click "Load Data" button, we want to retrieve data from that respective table and display it on the page. Copy the SQL Script to create the tables from my blog using the link below http://csharp-video-tutorials.blogspot.com/2017/04/dynamic-sql-table-name-variable.html Create the following stored procedure. Notice we are passing table name as a parameter to the stored prcoedure. In the body of the stored procedure we are concatenating strings to build our dynamic sql statement. In our previous videos we discussed that this open doors for SQL injection. Create procedure spDynamicTableName @TableName nvarchar(100) As Begin Declare @sql nvarchar(max) Set @sql = 'Select * from ' + @TableName Execute sp_executesql @sql End So the obvious question that comes to our mind is, why are we not creating parameterised sql statement instead. The answers is we can't. SQL Server does not allow table names and column names to be passed as parameters. Notice in the example below, we are creating a parameterised query with @TabName as a parameter. When we execute the following code, the procedure gets created successfully. Create procedure spDynamicTableName1 @TableName nvarchar(100) As Begin Declare @sql nvarchar(max) Set @sql = 'Select * from @TabName' Execute sp_executesql @sql, N'@TabName nvarchar(100)', @TabName = @TableName End But when we try to execute it we get an error - Must declare the table variable "@TabName" Execute spDynamicTableName1 N'Countries' Add a Web Page to the project that we have been working with in our previous video. Name it "DynamicTableName.aspx". Copy and paste the HTML from my blog using the link below http://csharp-video-tutorials.blogspot.com/2017/04/dynamic-sql-table-name-variable.html Copy and paste the code from my blog in the code-behind page http://csharp-video-tutorials.blogspot.com/2017/04/dynamic-sql-table-name-variable.html At this point, run the application and type the following text in the "Table Name" textbox and click "Load Data" button. Notice "SalesDB" database is dropped. Our application is prone to SQL injection as we have implemented dynamic sql in our stored procedure by concatenating strings instead of using parameters. Employees; Drop database SalesDB One way to prevent SQL injection in this case is by using SQL Server built-in function - QUOTENAME(). We will discuss QUOTENAME() function in detail in our next video. For now understand that by default, this function wraps that string that is passed to it in a pair of brackets. SELECT QUOTENAME('Employees') returns [Employees] Modify the stored procedure to use QUOTENAME() function as shown below. Alter procedure spDynamicTableName @TableName nvarchar(100) As Begin Declare @sql nvarchar(max) Set @sql = 'Select * from ' + QUOTENAME(@TableName) Execute sp_executesql @sql End At this point, type the following text in the "Table Name" textbox and click "Load Data" button. Notice you will see a message - Invalid object name 'Employees; Drop database SalesDB'. Also "SalesDB" database is not dropped. Employees; Drop database SalesDB The entire text in "Table Name" textbox is wrapped in a pair of brackets by the QUOTENAME function and is treated as table name. Since we do have a table with the specified name, we get the error - Invalid object name.
Views: 28397 kudvenkat
Oracle SQL Developer Tutorial For Beginners  75   SELECT PARTICULAR COLUMNS
 
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Oracle SQL Developer Tutorial For Beginners Series. This course introduces Oracle SQL Development for its subscribers. Currently this is based on Oracle 12c. The test environment is in Windows 10.
Views: 657 Sam Dhanasekaran
Oracle SQL Developer Tutorial For Beginners  94   Alias for Columns
 
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Oracle SQL Developer Tutorial For Beginners Series. This course introduces Oracle SQL Development for its subscribers. Currently this is based on Oracle 12c. The test environment is in Windows 10.
Views: 659 Sam Dhanasekaran
SQL*Plus (Oracle) - Retrieving Data Using the SQL SELECT Statement
 
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This video covers the following topics: 1. Selecting all data using SQL*Plus 2. Describing the structure of tables 3. Specifying column names
Views: 107 MrFphunter
Difference between rows and range
 
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range vs rows in sql server difference between rows clause and range clause in sql server range clause vs rows clause in sql server sql server running total query running total example in sql server In this video we will discuss the difference between rows and range in SQL Server. This is continuation to Part 116. Please watch Part 116 from SQL Server tutorial before proceeding. Let us understand the difference with an example. We will use the following Employees table in this demo. SQL Script to create the Employees table Create Table Employees ( Id int primary key, Name nvarchar(50), Salary int ) Go Insert Into Employees Values (1, 'Mark', 1000) Insert Into Employees Values (2, 'John', 2000) Insert Into Employees Values (3, 'Pam', 3000) Insert Into Employees Values (4, 'Sara', 4000) Insert Into Employees Values (5, 'Todd', 5000) Go Calculate the running total of Salary and display it against every employee row The following query calculates the running total. We have not specified an explicit value for ROWS or RANGE clause. SELECT Name, Salary, SUM(Salary) OVER(ORDER BY Salary) AS RunningTotal FROM Employees So the above query is using the default value which is RANGE BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW This means the above query can be re-written using an explicit value for ROWS or RANGE clause as shown below. SELECT Name, Salary, SUM(Salary) OVER(ORDER BY Salary RANGE BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW) AS RunningTotal FROM Employees We can also achieve the same result, by replacing RANGE with ROWS SELECT Name, Salary, SUM(Salary) OVER(ORDER BY Salary ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW) AS RunningTotal FROM Employees What is the difference between ROWS and RANGE To understand the difference we need some duplicate values for the Salary column in the Employees table. Execute the following UPDATE script to introduce duplicate values in the Salary column Update Employees set Salary = 1000 where Id = 2 Update Employees set Salary = 3000 where Id = 4 Go Now execute the following query. Notice that we get the running total as expected. SELECT Name, Salary, SUM(Salary) OVER(ORDER BY Salary ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW) AS RunningTotal FROM Employees The following query uses RANGE instead of ROWS SELECT Name, Salary, SUM(Salary) OVER(ORDER BY Salary RANGE BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW) AS RunningTotal FROM Employees Notice we don't get the running total as expected. So, the main difference between ROWS and RANGE is in the way duplicate rows are treated. ROWS treat duplicates as distinct values, where as RANGE treats them as a single entity. All together side by side. The following query shows how running total changes 1. When no value is specified for ROWS or RANGE clause 2. When RANGE clause is used explicitly with it's default value 3. When ROWS clause is used instead of RANGE clause SELECT Name, Salary, SUM(Salary) OVER(ORDER BY Salary) AS [Default], SUM(Salary) OVER(ORDER BY Salary RANGE BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW) AS [Range], SUM(Salary) OVER(ORDER BY Salary ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW) AS [Rows] FROM Employees Text version of the video http://csharp-video-tutorials.blogspot.com/2015/10/difference-between-rows-and-range.html Slides http://csharp-video-tutorials.blogspot.com/2015/10/difference-between-rows-and-range_8.html All SQL Server Text Articles http://csharp-video-tutorials.blogspot.com/p/free-sql-server-video-tutorials-for.html All SQL Server Slides http://csharp-video-tutorials.blogspot.com/p/sql-server.html All Dot Net and SQL Server Tutorials in English https://www.youtube.com/user/kudvenkat/playlists?view=1&sort=dd All Dot Net and SQL Server Tutorials in Arabic https://www.youtube.com/c/KudvenkatArabic/playlists
Views: 36174 kudvenkat
Copying Data With Column Headers in Oracle SQL Developer
 
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How to copy data to the clipboard with the column headers or how to ONLY copy the column headers in Oracle SQL Developer
Views: 2968 Jeff Smith
SQL SELECT statement database basics tutorial: learning, writing, using, examples
 
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SQL SELECT statement is the most commonly used command. Our SQL basics tutorial teaches you (writing and using) that SQL SELECT statement is used to query or retrieve data from a table in the database. Get more on Portnov Computer School website - http://www.portnov.com A query may retrieve information from specified columns or from all of the columns in the table. To create a simple SQL SELECT Statement, you must specify the column(s) name and the table name. The whole query is called SQL SELECT Statement. The SQL SELECT statement returns a result set of records from one or more tables. A SELECT statement retrieves zero or more rows from one or more database tables or database views. In most applications, SELECT is the most commonly used Data Manipulation Language (DML) command. As SQL is a declarative programming language, SELECT queries specify a result set, but do not specify how to calculate it. The database translates the query into a "query plan" which may vary between executions, database versions and database software. This functionality is called the "query optimizer" as it is responsible for finding the best possible execution plan for the query, within applicable constraints. Expressions combine many arithmetic operators, they can be used in SELECT, WHERE and ORDER BY Clauses of the SQL SELECT Statement. Here we will explain how to use expressions in the SQL SELECT Statement. About using expressions in WHERE and ORDER BY clause, they will be explained in their respective sections. The operators are evaluated in a specific order of precedence, when more than one arithmetic operator is used in an expression. The order of evaluation is: parentheses, division, multiplication, addition, and subtraction. The evaluation is performed from the left to the right of the expression.
Views: 181559 portnovschool
SQL Aggregation queries using Group By, Sum, Count and Having
 
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From SQL Queries Joes 2 Pros (Vol2) ch4.1. Learn up to write aggregated queries.
Views: 182042 Joes2Pros SQL Trainings
PIVOT Tutorial - generating dynamic column with PIVOT Interview Question SQL
 
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In this lecture you will learn about PIVOT operator and using it to generate dynamic columns.PIVOT is very use full operator to convert values into columns. PIVOT: •Convert your output from (values)vertical order to horizontal(making columns) one Topic to cover: •PIVOT example •PIVOT syntax •Interview Question •PIVOT on northwind •Dynamic PIVOT query http://www.techsapphire.in/index/pivot_sql_lesson_with_generating_dynamic_columns_with_pivot/0-158
Views: 31465 techsapphire
Part 6   Transform rows into columns in sql server
 
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Link for all dot net and sql server video tutorial playlists http://www.youtube.com/user/kudvenkat/playlists Link for slides, code samples and text version of the video http://csharp-video-tutorials.blogspot.com/2014/06/part-6-transform-rows-into-columns-in.html This is another common sql server interview question. We will be using Countries table in this example. SQL to create the table Create Table Countries ( Country nvarchar(50), City nvarchar(50) ) GO Insert into Countries values ('USA','New York') Insert into Countries values ('USA','Houston') Insert into Countries values ('USA','Dallas') Insert into Countries values ('India','Hyderabad') Insert into Countries values ('India','Bangalore') Insert into Countries values ('India','New Delhi') Insert into Countries values ('UK','London') Insert into Countries values ('UK','Birmingham') Insert into Countries values ('UK','Manchester') Here is the interview question. Write a sql query to transpose rows to columns. Using PIVOT operator we can very easily transform rows to columns. Select Country, City1, City2, City3 From ( Select Country, City, 'City'+ cast(row_number() over(partition by Country order by Country) as varchar(10)) ColumnSequence from Countries ) Temp pivot ( max(City) for ColumnSequence in (City1, City2, City3) ) Piv
Views: 203893 kudvenkat
Oracle Database11g tutorials 13 || SQL substr function / SQL substring function
 
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link of SQL substr blog : http://www.rebellionrider.com/SQL-substr-function.htm SQL substr function SQL Substr function will return a sub string of a specified length from the source string beginning at a given position. Tool used in this tutorial is command prompt. This tutorial series is part of SQL expert exam certification training. if you are preparing for SQL certification you can use my tutorials. This SQL Tutorial is a part of free training. Copy Cloud referral link || Use this link to join copy cloud and get 20GB of free storage https://copy.com?r=j7eYO7 Contacts E-Mail [email protected] Twitter https://twitter.com/rebellionrider Instagram http://instagram.com/rebellionrider Facebook. https://www.facebook.com/imthebhardwaj Linkedin. http://in.linkedin.com/in/mannbhardwaj/ Thanks for linking, commenting, sharing and watching more of our videos This is Manish from RebellionRider.com ---------------------------------------------------------------------------- As the name suggests SQL Substr function will return substring from a given source string. Let's see the Syntax Substr (source_string, start_pos, Substr_length) As we can see SQL substr function takes 3 parameters. First one is Source string from which you want to extract the segment. Second parameter is Starting position for sub string from the Source string. And the third parameter is Substr_length which is the length for the substring. First two parameters are mandatory to specify while third one is optional. So we can say. SQL Substr function will return a sub string of a specified length from the source string beginning at a given position. First parameter source string can be of any data type CHAR, VARCHAR2, NCHAR, NVARCHAR2, CLOB, or NCLOB whereas both start_pos, Substr_length parameters must be number data type. The returning result of SQL Substr function is of same data type of source string. Let's see an example of SQL Substr function. SELECT substr('www.RebellionRider.com',5,14) FROM dual; Here in this query url of my website www.RebellionRider.com is our source string with the total length of 22 characters, Now, I want to extract the name of my website that is, RebellionRider. So if you count the total length of the name of the website, it is 14. That's why I have specified 14 as my third parameter of SQL Substr function which is substr_length. Also the name of the website RebellionRider is starting from 5th position therefore I have specified 5 at second parameter of SQL substr function which is strt_pos or starting position. Execute it. Here is our result RebellionRider When starting position is larger than the length of source string. In this case SQL Substr function will return NULL as a result. Let's do an example. SELECT substr('www.RebellionRider.com',23,14) FROM dual; As you can see here I have specified 23 at starting position and the total length of our source string is 22 characters Let's execute And the result is Null. Second scenario When the Substr_length is greater than source string In this case the segment return is the substring from starting position to the end of the string. For example SELECT substr('www.RebellionRider.com',5,23) FROM dual; Our starting position is at 5 means at the first R of RebellionRider and length of substring is set to 23 which is greater than the length of source string that is 22. Execute. As you can see we get a substring from first R of RebellionRider till the end of the source String. Third scenario When you supply numeric or arithmetic expression or a DATE instead of character as Source string to SQL Substr function In this scenario If you have supplied a numeric string instead of character as source string, the oracle engine casts them as a character when they occur as parameter to SQL Substr function. And if you have supplied Arithmetic expression or a DATE then The Oracle engine first solves or evaluates the Arithmetic expression or the DATE Then casts them as a character. Means if you have arithmetic expression in your source string then oracle will first solve it and then change or say cast the value of its result into character. Let's see some example. SELECT substr(50000-7,2,4) FROM dual; Oracle first evaluates the arithmetic expression that is 50000-7 equals to 49993. And then oracle engine casts this result 49993 into a character string. Means 49993 will be a 5 characters string. Starting position of substring is 2, that means from the first 9 of 49993 We specified the length of substring is 4 so we must get 9993 as our result. Let's check execute
Views: 82688 Manish Sharma
SQL query to find first record and last record in single query
 
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SQL query to find first record and last record in single query
Views: 10795 SQL Guru
Filter Column Data according to another Table Column | SQL | Oracle ExpressEdition Tutorials
 
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Learn to filter a table's column data in output based on another table's column data. How is this done? -- Using the LIKE operator when we have to deal with strings (char/varchar/varchar2). Here's the query: ----------------------------------------------------------------------------------------------------------- select emp1.empid, empname, dept1.deptid, dept1.city from dept1 inner join emp1 on(emp1.deptid = dept1.deptid) where dept1.city in (select emp1.city from emp1) or dept1.city like (emp1.city || '%'); ----------------------------------------------------------------------------------------------------------- Here the tables are joined using the inner join on the department IDs as they are not related by the foreign key constraint. The LIKE Operator and the wildcard character % helps to filter the string data here. The first section of the where clause is to filter the exact names of cities. Removing this will remove 'california' from the result. This can be very useful to filter candidate names or locations or any string data which is present in two tables. Hop on to learn more! Subscribe to my channel to learn new Oracle/SQL tips and tricks to obtain a particular output. Use the Oracle Express Edition for quick learning! Check out my other videos: -------------------------------------------------- Clone an Oracle table using SQL: https://youtu.be/8MICKuNoT1w Add Primary Key to Existing Table: https://youtu.be/DgGoedEBLoU Create an Application Workspace: https://youtu.be/Tl9hddgUSdI Download the latest Oracle Express Edition release here: http://www.oracle.com/technetwork/database/database-technologies/express-edition/downloads/index.html Follow me on Instagram: https://www.instagram.com/the_perfect_tutorials/ Follow me on Facebook: https://www.facebook.com/theperfecttutorials Sound: Bensound
SQL 008 SELECT AS Column Alias How do I change column names?
 
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Explains the SELECT AS (Column Alias) statement or how do I change column names to what I want? From http://computerbasedtraininginc.com SQL Course. Learn by doing SQL commands for ANSI Standard SQL, Access, DB2, MySQL, Oracle, PostgreSQL, and SQL Server.
Views: 2561 cbtinc
List all tables in a sql server database using a query  Part 65
 
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Text version of the video http://csharp-video-tutorials.blogspot.com/2013/06/part-65-list-all-tables-in-sql-server.html Slides http://csharp-video-tutorials.blogspot.com/2013/09/part-65-list-all-tables-in-sql-server.html All SQL Server Text Articles http://csharp-video-tutorials.blogspot.com/p/free-sql-server-video-tutorials-for.html All SQL Server Slides http://csharp-video-tutorials.blogspot.com/p/sql-server.html All Dot Net and SQL Server Tutorials in English https://www.youtube.com/user/kudvenkat/playlists?view=1&sort=dd All Dot Net and SQL Server Tutorials in Arabic https://www.youtube.com/c/KudvenkatArabic/playlists In this video we will discuss, writing a transact sql query to list all the tables in a sql server database. This is a very common sql server interview question. Object explorer with in sql server management studio can be used to get the list of tables in a specific database. However, if we have to write a query to achieve the same, there are 3 system views that we can use. 1. SYSOBJECTS - Supported in SQL Server version 2000, 2005 & 2008 2. SYS.TABLES - Supported in SQL Server version 2005 & 2008 3. INFORMATION_SCHEMA.TABLES - Supported in SQL Server version 2005 & 2008 -- Gets the list of tables only Select * from SYSOBJECTS where XTYPE='U' -- Gets the list of tables only Select * from SYS.TABLES -- Gets the list of tables and views select * from INFORMATION_SCHEMA.TABLES To get the list of different object types (XTYPE) in a database Select Distinct XTYPE from SYSOBJECTS Executing the above query on my SAMPLE database returned the following values for XTYPE column from SYSOBJECTS IT - Internal table P - Stored procedure PK - PRIMARY KEY constraint S - System table SQ - Service queue U - User table V - View Please check the following MSDN link for all possible XTYPE column values and what they represent. http://msdn.microsoft.com/en-us/library/ms177596.aspx
Views: 93792 kudvenkat
04 MySQL Tutorial for Beginners: USE, SELECT, result set, DISTINCT, ALL
 
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In this video you will begin to code your first "SQL statements" in MySQL Workbench. The very first thing you need to do is to choose and select a database. The "USE statement" is the one you’re going to need for this purpose, and it's the very first statement you're going to learn. The second statement you're going to learn is the "SELECT statement" which is used to retrieve data from a base table. You code the SELECT keyword followed by a list of column names separated by commas and the FROM keyword followed by the name of the base table from which the query retrieves the data. A "result set" is a table of data resulted from a statement: you can think of it as a temporary table that's created within a database. Note that when you execute a USE statement alone, you do not get any results back, because a USE statement itself does not expect to have any results back. In the SELECT clause, you can code an asterisk as a shorthand to indicate that all of the rows and columns should be retrieved. By default, all of the rows in the base table are included in the result set. In some cases, that means that the result set will contain duplicate rows, or rows whose column values are identical. If that's not what you want, you can include the DISTINCT keyword in the SELECT clause to eliminate the duplicate rows. The DISTINCT keyword prevents duplicate rows from being included in the result set. The ALL keyword causes all rows matching the search condition to be included in the result set, regardless of whether rows are duplicated. The ALL keyword is the default and can therefore be omitted. EXERCISES for your SELF-TRAINING: http://golearnfast.com/Quizzes.php?_SelectSmallerGroup_279=0&Lessons_ID=279 SCRIPT FOR THE EXAMPLES: http://www.golearnfast.com/files/lessons_material/lesson_277_1440544998.sql SUBSCRIBE! https://www.youtube.com/channel/UCMEaGDoHU7c9tWyafZ9vC6Q?sub_confirmation=1 FACEBOOK https://www.facebook.com/golearnfast GOOGLE+ https://plus.google.com/u/0/b/101326338689489366802/
Views: 7389 golearnfast
Get Identity Column Values without mentioning Identity Column Name in Select - SQL Tutorial Part 46
 
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SQL Server / TSQL Tutorial Scenario: How to Get Identity Column Values without mentioning Identity Column Name in Select You took a quick look on Table and Columns in SQL Server but could not find if Identity Property is enabled on one of the column. You don't want to use system tables to find out the column name if identity is enabled or not but want to get the column name with data. How would you do that? Link to scripts used in the video http://www.techbrothersit.com/2016/02/how-to-get-identity-column-values.html Check out our website for Different SQL Server, MSBI tutorials and interview questions such as SQL Server Reporting Services(SSRS) Tutorial SQL Server Integration Services(SSIS) Tutorial SQL Server DBA Tutorial SQL Server / TSQL Tutorial ( Beginner to Advance) http://www.techbrothersit.com/
Views: 1327 TechBrothersIT
SQL Brief 2: Selecting columns and aliases
 
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And introduction to SQL and relational databases for Data Analysis. In this video we look at SQL aliases and how to select columns. Notes, code and other resources from http://www.citrustechnology.com/sql-briefs
Views: 912 citrustechnology
Tricks to Replace SELECT * with Column Names - SQL in Sixty Seconds #017
 
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This video explains tricks to replace SELECT * with Column Names using SQL Server Management Studio. Click here to learn more: http://bit.ly/JJxkk4
Views: 14658 Pinal Dave
Sql Server Column Name Restrictions | Sql Column Name Rules | Sql Server Database Name Rules
 
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Sql Server Column Name Restrictions | Sql Column Name Rules | Sql Server Database Name Rules --------------------------------------------------------------------------------------------------------- sql server column name restrictions,how many character used in column name in database sql,sql server valid column names,sql server special characters in column name,sql query to find column name in database,sql column name rules,sql server column names starting with number,sql server column name length,sql select column name with number,sql, rename sql table, rename column in sql server table, sp_rename, server, sql server tutorial, tsql tutorial, sql server free training, sql developer, sql server free video tutorial, real time sql scripts, naming conventions, script task, sql queries, sql server column name restrictions,sql server valid column names,sql database naming conventions best practices,sql server database name rules,sql server naming conventions,sql server special characters in column name,foreign key column naming convention,sql id naming convention, sql tutorials for beginners, sql expert, sql expert tutorials, database, oracle, table, online training,insert into oracle,oracle insert into multiple rows,create table oracle,oracle 12c alter table add identity column,oracle create table default value sysdate,collections in oracle pl sql with examples,Oracle 12c, database, oracle database (software), sql, sql developer, sql tutorials, how to create database using dbca, how to create database in oracle,oracle cloud, database 12c, dba genesis,database services, database, create, 11g, dba, db, beginner, Please Subscribe My Channel
Oracle Column Alias Name
 
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COLUMN ALIASES are used to make column headings in your result set easier to read. TABLE ALIASES are used to shorten your SQL to make it easier to read or when you are performing a self join (ie: listing the same table more than once in the FROM clause). oracle sql column alias in where clause oracle alias column name with space oracle sql alias subquery oracle column synonym oracle alias select statement oracle join alias alias in oracle sql developer oracle database alias 26. Table Alias in Oracle In this video you will learn about Table Alias in Oracle. I will show you a simple query without table alias and then use a table alias ... SQL Tutorial in Oracle - 5 Column Alias with Order By SQL aliases are used to give a database table, or a column in a table, a temporary name. 7:30 Alias Names In Oracle | Oracle Tutorials for Beginners Oracle PL/SQL World • 92 views 1 month ago Alias Names In Oracle | Oracle Tutorials for Beginners Column Level Alias Names in Oracle Table Level Alias names in Oracle ... 3:01 25. Column Alias in Oracle ITORIAN • 17K views 4 years ago In this video you will learn about Column Alias used in Oracle. I will show you a simple query without column alias and then use a ... 7:24 53. Alias in SQL (Hindi) 8.4K views 1 year ago Please Subscribe Channel Like, Share and Comment Visit : ALIASES in Oracle • 3:07 What are Table Aliases? (Introduction to Oracle SQL) Database Star • 29 views 3 months ago Learn what table aliases are and how to use them. 1:44 PL/SQL Tutorial 3 (Oracle): Using an Alias • 141 views 1 year ago PL/SQL Tutorial 3 (Oracle): Using an Alias In this tutorial I show you how to use an Alias in PL/SQL. Source Code: ... Learn Oracle SQL : Table and Column Aliases Oracle SQL • /oracle-sql-course | Get the complete course today. Learn Oracle SQL : Table And Column Aliases : In this video I ... SQL Tutorial - 28: Aliasing Through AS Clause •In this tutorial we'll see how we can change the display names of fields in result sets. Oracle Database tutorials 1: How to install Oracle Database 11g on windows 7 • 1.2M views 4 years ago How To install Oracle Database 11g enterprise edition On windows 7 64 bit. Full installation in Single video. Enjoy SQL and ... Related 1. What is Database In this video you will learn the very basics of Database. I will try to address it from every best possible way that will make you ... Related SQL Aggregation queries using Group By, Sum, Count and Having From SQL Queries Joes 2 Pros (Vol2) ch4.1. Learn up to write aggregated queries. Column Alias in Oracle Oracle Column Alias in Oracle(How to rename the column header in SQL)
Views: 25 Muo sigma classes
Read from (SELECT) Database table - SQLite3 with Python 3 part 3
 
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In the previous tutorials, we've covered creating a database and populating one, now we need to learn how to read from the database. Reading from a database is where the power of using something like SQLite over a flat file starts to make sense. While we can query the entire table, we can instead just query a single column, or even based on specific row values. Let's see what I mean sample code and text tutorial: https://pythonprogramming.net/sqlite-part-3-reading-database-python/ Playlist: https://www.youtube.com/playlist?list=PLQVvvaa0QuDezJh0sC5CqXLKZTSKU1YNo https://pythonprogramming.net https://twitter.com/sentdex https://www.facebook.com/pythonprogramming.net/ https://plus.google.com/+sentdex
Views: 89312 sentdex
SELECT Statement - Oracle
 
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The usage of SELECT statement 1. projection 2. selection 3. joins 1. Describe various SQL statements 2. Retrieve data from tables 3. Customize column headings 4. Display the null values 5. Use various arithmetic operators 6. Use the concatenation operator 7. Use the quote (q) operator 8. Display the table structure Installation and Configuration sql developer of Oracle 10i: https://www.youtube.com/watch?v=L9kftvq4GKc&t=2s
Part 1   How to find nth highest salary in sql
 
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Link for all dot net and sql server video tutorial playlists http://www.youtube.com/user/kudvenkat/playlists Link for slides, code samples and text version of the video http://csharp-video-tutorials.blogspot.com/2014/05/part-1-how-to-find-nth-highest-salary_17.html This is a very common SQL Server Interview Question. There are several ways of finding the nth highest salary. By the end of this video, we will be able to answer all the following questions as well. How to find nth highest salary in SQL Server using a Sub-Query How to find nth highest salary in SQL Server using a CTE How to find the 2nd, 3rd or 15th highest salary Let's use the following Employees table for this demo Use the following script to create Employees table Create table Employees ( ID int primary key identity, FirstName nvarchar(50), LastName nvarchar(50), Gender nvarchar(50), Salary int ) GO Insert into Employees values ('Ben', 'Hoskins', 'Male', 70000) Insert into Employees values ('Mark', 'Hastings', 'Male', 60000) Insert into Employees values ('Steve', 'Pound', 'Male', 45000) Insert into Employees values ('Ben', 'Hoskins', 'Male', 70000) Insert into Employees values ('Philip', 'Hastings', 'Male', 45000) Insert into Employees values ('Mary', 'Lambeth', 'Female', 30000) Insert into Employees values ('Valarie', 'Vikings', 'Female', 35000) Insert into Employees values ('John', 'Stanmore', 'Male', 80000) GO To find the highest salary it is straight forward. We can simply use the Max() function as shown below. Select Max(Salary) from Employees To get the second highest salary use a sub query along with Max() function as shown below. Select Max(Salary) from Employees where Salary [ (Select Max(Salary) from Employees) To find nth highest salary using Sub-Query SELECT TOP 1 SALARY FROM ( SELECT DISTINCT TOP N SALARY FROM EMPLOYEES ORDER BY SALARY DESC ) RESULT ORDER BY SALARY To find nth highest salary using CTE WITH RESULT AS ( SELECT SALARY, DENSE_RANK() OVER (ORDER BY SALARY DESC) AS DENSERANK FROM EMPLOYEES ) SELECT TOP 1 SALARY FROM RESULT WHERE DENSERANK = N To find 2nd highest salary we can use any of the above queries. Simple replace N with 2. Similarly, to find 3rd highest salary, simple replace N with 3. Please Note: On many of the websites, you may have seen that, the following query can be used to get the nth highest salary. The below query will only work if there are no duplicates. WITH RESULT AS ( SELECT SALARY, ROW_NUMBER() OVER (ORDER BY SALARY DESC) AS ROWNUMBER FROM EMPLOYEES ) SELECT SALARY FROM RESULT WHERE ROWNUMBER = 3
Views: 971821 kudvenkat
Part 5   SQL query to find employees hired in last n months
 
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Link for all dot net and sql server video tutorial playlists http://www.youtube.com/user/kudvenkat/playlists Link for slides, code samples and text version of the video http://csharp-video-tutorials.blogspot.com/2014/05/part-5-sql-query-to-find-employees.html This question is asked is many sql server interviews. If you have used DATEDIFF() sql server function then you already know the answer. -- Replace N with number of months Select * FROM Employees Where DATEDIFF(MONTH, HireDate, GETDATE()) Between 1 and N
Views: 183069 kudvenkat
Best Way to Write Basic SQL Queries
 
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SQL Server Query writing strategies is something I have yet to find in any book. When enthusiastic SQL students do this, they experience a revelation. The number of errors drops significantly and the speed at writing complex queries increases immediately. Knowing how to narrow down what we are looking for amongst a vast list of choices helps immensely. Grabbing the right tables first and then the fields second is akin to grabbing the right menu before ordering an item from it. In fact, one student named Tim took this back to his team of SQL developers and they immediately implemented this process. We are all used to following steps. Most of the time, actions are sequential from top to bottom or left to right. Other times we complete things in phases. The two phases we are going to use in this exercise apply to joining tables. This is easy to implement as we only need remember to organize first and clean up second. When visiting a new restaurant, we will ask to see the menu, because we want to see all they have to offer. The odds are that we might be interested in half of the items, but only need a few dishes for our group at the table. Looking at the menu is like starting a query with a ‘SELECT *’ statement. Once we have looked at all the fields, we narrow our choice(s) to only the items we want at the time. Sometimes restaurants have multiple menus. My favorite restaurant has a kids’ menu, an adult menu, a gluten-free menu and a drink menu. These menus were each gathered at our table. Ultimately, in my head, a selection was narrowed to what was needed. Phase I: Organize. When building a new query from many tables, we often find ourselves wondering, “Where do I start?” First, lay the steps out by identifying which tables contain the essential data. Second, get all the table joins working with a basic ‘SELECT *’ statement. Third, add any basic filtering criteria. Phase II: Itemize. Once all joins and criteria, such as SELECT, FROM and WHERE are working, we are ready for Phase II. This entails going back and changing our ‘SELECT *’ to an itemized SELECT field list as the final step. Let’s explore how this two-phase process of Organize and then Itemize can be a big time-saver. We are going to use one of the challenges from the last lab. In Lab 3.2 (Outer Joins), Skill Check 2, we needed to get four fields from two different tables. If we were to list all four desired fields and test one table at time, we will get an error as seen on the right side of the figure below. In the figure below we write a SELECT statement and part of the FROM clause. When completed, the FROM clause will have two tables, but for now we just want to get the Location table working. By using the ‘SELECT *’ strategy, we remove any possible errors from line 1. From there, we can focus on the more complicated logic used for joining tables together. We can add tables one at a time until everything is working. This is the Organize phase. NOTE: SELECT * never results in an Error message stating “invalid column name”, however; a SELECT list with itemized field(s) can have this error. After our query is organized and working, we can go back and itemize the SELECT field list to display only the fields that are necessary. This is done during Phase II (Itemize). The steps for this system are broken down as follows: Since SELECT is always the first statement in a query, it’s natural to want to write the field names before writing the FROM clause. However; we can save time and trouble by using the ‘*’ until the entire query is working properly. When this is complete, it is very easy to itemize the field list, with the confidence of knowing it will not cause any problems. Exercise: Simple membership for a club: Table1 (id_Member,name_Member, email_member, title, age, company) Table2 (id_Club,club_name, club_Location, address) Table3 (id_club, id_member,membership_date) Q1: Show all member names, email, age, and company from Table1 Q2: Show all club name, location, and address data Q3: Show member name, club name, club location (hint: Use joins and all 3 tables) You can find all other classes related to this video here: http://www.joes2pros.com/joes2pros/Course/Introduction_To_Microsoft_SQL_Server Enroll Today & Get the First Month for only $1! Use code: YOUTUBE1
Views: 254671 Joes2Pros SQL Trainings
Part 4   Delete duplicate rows in sql
 
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Link for all dot net and sql server video tutorial playlists http://www.youtube.com/user/kudvenkat/playlists Link for slides, code samples and text version of the video http://csharp-video-tutorials.blogspot.com/2014/05/part-4-delete-duplicate-rows-in-sql.html In this video, we will discuss deleting all duplicate rows except one from a sql server table. SQL Script to create Employees table Create table Employees ( ID int, FirstName nvarchar(50), LastName nvarchar(50), Gender nvarchar(50), Salary int ) GO Insert into Employees values (1, 'Mark', 'Hastings', 'Male', 60000) Insert into Employees values (1, 'Mark', 'Hastings', 'Male', 60000) Insert into Employees values (1, 'Mark', 'Hastings', 'Male', 60000) Insert into Employees values (2, 'Mary', 'Lambeth', 'Female', 30000) Insert into Employees values (2, 'Mary', 'Lambeth', 'Female', 30000) Insert into Employees values (3, 'Ben', 'Hoskins', 'Male', 70000) Insert into Employees values (3, 'Ben', 'Hoskins', 'Male', 70000) Insert into Employees values (3, 'Ben', 'Hoskins', 'Male', 70000) The delete query should delete all duplicate rows except one. Here is the SQL query that does the job. PARTITION BY divides the query result set into partitions. WITH EmployeesCTE AS ( SELECT *, ROW_NUMBER()OVER(PARTITION BY ID ORDER BY ID) AS RowNumber FROM Employees ) DELETE FROM EmployeesCTE WHERE RowNumber ] 1
Views: 357463 kudvenkat
Select statement in sql server - Part 10
 
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In this video we will learn 1. Select specific or all columns 2. Distinct rows 3. Filtering with where clause. 4. Wild Cards in SQL Server 5. Joining multiple conditions using AND and OR operators 6. Sorting rows using order by 7. Selecting top n or top n percentage of rows Text version of the video http://csharp-video-tutorials.blogspot.com/2012/08/select-statement-part-10.html Slides http://csharp-video-tutorials.blogspot.com/2013/08/part-10-all-about-select.html All SQL Server Text Articles http://csharp-video-tutorials.blogspot.com/p/free-sql-server-video-tutorials-for.html All SQL Server Slides http://csharp-video-tutorials.blogspot.com/p/sql-server.html All Dot Net and SQL Server Tutorials in English https://www.youtube.com/user/kudvenkat/playlists?view=1&sort=dd All Dot Net and SQL Server Tutorials in Arabic https://www.youtube.com/c/KudvenkatArabic/playlists
Views: 351585 kudvenkat
How To Rename Field Name in Table By Using Select Query - MySql Database Bangla Tutorial Part 6
 
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In this turial, I will show you how to rename column name by using sql query, how to rename column name by query in mysql, how to use query window in mysql, How To rename column in Table by Using Sql Query, How To rename column name By Using SQL Query, how to rename column name in sql, how to rename column name in database table,How To rename column name In mysql By Using Select Query - MySql Database Bangla Tutorial. I hope you enjoy this tutorial. Please subscribe my channel. Wish You Success, Shoaib Hossain (softall503s - soft all)
Views: 366 Soft-All
SQL 007 SELECT Using Column Names or How do I SELECT specific columns?
 
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Explains The SELECT statement using column names. From http://computerbasedtraininginc.com SQL Course. Learn by doing SQL commands for ANSI Standard SQL, Access, DB2, MySQL, Oracle, PostgreSQL, and SQL Server.
Views: 1159 cbtinc
Selecting Multiple Columns
 
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Selecting Multiple Columns As previously mentioned, the SQL SELECT statement retrieves records from tables in your SQL database. You can select multiple table columns at once. Just list the column names, separated by commas:
Views: 3 Samir Selak
SELECT INTO, ADD NEW COLUMN TO TEMPORARY TABLE IN SQL SERVER
 
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How to select data to temporary table and then add new column to temporary table then calculate the new column in SQL Server
Views: 946 Sourn Sarim
RENAME COLUMN, DROP COLUMN in Oracle SQL
 
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Oracle SQL tutorials, How to RENAME COLUMN, DROP COLUMN
Part 12   Can we join two tables without primary foreign key relation
 
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Link for all dot net and sql server video tutorial playlists http://www.youtube.com/user/kudvenkat/playlists Link for slides, code samples and text version of the video http://csharp-video-tutorials.blogspot.com/2014/09/part-12-can-we-join-two-tables-without.html Can we join two tables without primary foreign key relation Yes, we can join two tables without primary foreign key relation as long as the column values involved in the join can be converted to one type. ID column in Departments table is not the primary Key and DepartmentId column in Employees table is not the foreign key. But we can still join these tables using ID column from Departments table and DepartmentId column from Employees table, as both the columns involved in the join have same data type i.e int. Select Employees.Name as EmployeeName, Departments.Name as DepartmentName from Employees join Departments on Departments.ID = Employees.DepartmentId The obious next question is, if primary foreign key relation is not mandatory for 2 tables to be joined then what is the use of these keys? Primary key enforces uniqueness of values over one or more columns. Since ID is not a primary key in Departments table, 2 or more departments may end up having same ID value, which makes it impossible to distinguish between them based on the ID column value. Foreign key enforces referential integrity. Without foreign key constraint on DepartmentId column in Employees table, it is possible to insert a row into Employees table with a value for DepartmentId column that does not exist in Departments table. The following insert statement, successfully inserts a new Employee into Employees table whose DepartmentId is 100. But we don't have a department with ID = 100 in Departments table. This means this employee row is an orphan row, and the referential integrity is lost as result Insert into Employees values (8, 'Mary', 'Female', 80000, 100) If we have had a foreign key constraint on DepartmentId column in Employees table, the following insert statement would have failed with the following error. Msg 547, Level 16, State 0, Line 1 The INSERT statement conflicted with the FOREIGN KEY constraint. The conflict occurred in database "Sample", table "dbo.Departments", column 'ID'.
Views: 123233 kudvenkat
oracle - create table from another tables
 
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oracle - create table from another tables --script select id, first_name, last_name, address, email, phone, admission_date, login from student -- Now i want to make another tables with same column names as student tables create table student_2 as select * from student where 1 != 1 select id, first_name, last_name, address, email, phone, admission_date, login from student_2 -- now data -- Now create another table with data create table student_with_data as select * from student where 1=1 select * from student_with_data -- that simple
Views: 32 Mr Code
Understand Column Alias in Select Query in SQL Server - SQL Server / TSQL Tutorial Part 115
 
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SQL Server / T-SQL Tutorial Scenario: Understand Column Alias in Select Query in SQL Server You are working as SQL Server developer, you need to extract the data from dbo.Customer table and provide in an Excel Sheet. Your table has difference columns such as FName, LName but you want the output to come with FirstName and LastName. How would you do that? Link to scripts used in SQL Server / T-SQL Tutorial Video http://www.techbrothersit.com/2016/06/understand-column-alias-in-select-query.html Check out our website for Different SQL Server, MSBI tutorials and interview questions such as SQL Server Reporting Services(SSRS) Tutorial SQL Server Integration Services(SSIS) Tutorial SQL Server DBA Tutorial SQL Server / T-SQL Tutorial ( Beginner to Advance) http://www.techbrothersit.com/
Views: 1125 TechBrothersIT
SQL Tutorial 6: SELECT with LIKE clause and ALIAS to column
 
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In addition with clauses that you could combine with SELECT statement, the video shows examples using LIKE, BETWEEN AND in filtering dates, setting an ALIAS name for a column, and deriving a column as a result of a computation. YEAR function is used to derive the year of date column. Use LIKE clause in filtering string pattern in a column. Use may filter rows or records with a last name that starts with SM or ends with TH or an ER pattern in between. This is use either with a percent sign (%) or underscore (_). BETWEEN AND clause is not limited in amount ranges. You may use this powerful clause when limiting specific date range. On most occasions, you may opt to use a different column name or an ALIAS when displaying the column. Use AS operator in column name together with its new name. Experienced SQL users usually drop the AS and specify immediately the alias name. Alias name is enclosed with quotation marks when used. Working with dates may be simplified if you use specific functions. The given example uses the YEAR () function that derives the year of specific date. YEAR () function is not limited with WHERE condition but works perfectly when used in performing computation with other dates. The given example shows the 10% increase on salary as you compute it. Combine this with an alias name in order to present your data in a clear manner. Most of thethese functions and clauses perfectly work with MySQL, Oracle, Informix, MS SQL Server other than DB2. Link for the ebook will be announced later.
Views: 1999 Jerry Esperanza
Learn How to Update Data Rows using Update Statement in SQL
 
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Learn about using UPDATE statement in SQL. As the name suggests UPDATE statement is used to update the data rows in a table. The UPDATE statement can update one or multiple column values in single SQL statement. WHERE clause is used to specify the data row to be updated. UPDATE statement without WHERE clause will update all the data rows in the table. Any existing data rows or records in target table remain unaffected. Here are the examples UPDATE statements, UPDATE tablename SET column1 = newvalue; UPDATE tablename SET column1 = newvalue1, column2 = newvalue2 WHERE columnid = 3; Select the "school" database, "USE school;" Run a simple SQL statement to display all the data rows in students table using SQL statement, "SELECT * FROM students;" Here in this result set, take a look at studentid 1. Suppose we have accidentally added this student record under class first instead of second. And now we are going to update this row to change the class value from 'First' to 'Second'. We will use the SQL statement, "UPDATE students SET class = 'Second' WHERE studentid = 1;" Press enter to execute the statement and display all the data rows in 'students' table, "SELECT * FROM students;" And sure enough the class value for studentid 1 is changed from 'First' to 'Second'. Check out the whole playlist of SQL Tutorials or Individual video from the following links, SQL Tutorial for Beginners. Introduction to SQL Basics https://www.youtube.com/playlist?list=PLhwzZMYRiUErXXX0Ryud2R7RjesCEdTqi 1.Learn What is SQL? Introduction to SQL https://www.youtube.com/watch?v=ox6zUOKascs 2.Learn How to Install MySQL Database Server on Windows Operating System https://www.youtube.com/watch?v=vtnoWaydkEU 3.Learn What is Database? How to Create and Show Databases using SQL https://www.youtube.com/watch?v=-yJgWq6K_U8 4.Learn How to Select and Use Existing Database using SQL https://www.youtube.com/watch?v=QMViQ38SPxc 5.Learn How to Delete or Remove Database using SQL https://www.youtube.com/watch?v=wjEOZKvfH4c 6.Learn What is Database Table? How to Create a Database Table using SQL? https://www.youtube.com/watch?v=8SvtNIfzC4o 7.Learn How to Modify or Update Database Table using SQL https://www.youtube.com/watch?v=1he5oZzG33o 8.Learn How to Delete or Remove Database Table using SQL https://www.youtube.com/watch?v=JD87WvBist0 9.Learn How to Add Data Rows in a Table using SQL https://www.youtube.com/watch?v=UB-bQxAQbWg 10.Learn How to Use INSERT INTO SELECT Statement in SQL https://www.youtube.com/watch?v=U4ApxHF4R1g 11.Learn How to Update Data Rows using Update Statement in SQL https://www.youtube.com/watch?v=lE1BmNbFJdo 12.Learn How to Delete Data Rows using Delete Statement in SQL https://www.youtube.com/watch?v=1ViqX1tFgYM Subscribe to my channel: https://www.youtube.com/channel/UCvrq9OowoORTV5Gs_jpADhw
SQL with Oracle 10g XE - Using CREATE TABLE to Build a Table
 
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In this video I use the CREATE TABLE command to create three tables: Books, Publisher, and Author. I use these three tables as sample data. The code I entered in is: CREATE TABLE BOOK ( BOOK_ID VARCHAR(4) PRIMARY KEY, ISBN_10 VARCHAR(10), ISBN_13 VARCHAR(13), TITLE VARCHAR(50), CATEGORY VARCHAR(15), PRICE DECIMAL(6,2), BINDING VARCHAR(1), PUB_DATE VARCHAR(4), AUTHOR_ID SMALLINT, PUBLISHER_ID SMALLINT ); CREATE TABLE PUBLISHER ( PUBLISHER_ID SMALLINT PRIMARY KEY, PUBLISHER_NAME VARCHAR(40) ); CREATE TABLE AUTHOR ( AUTHOR_ID SMALLINT PRIMARY KEY, AUTHOR_LAST VARCHAR(25), AUTHOR_FIRST VARCHAR(20) ); I have to create each table individually in the SQL commands window. This video is part of a series of videos with the purpose of learning the SQL language. For more information visit Lecture Snippets at http://lecturesnippets.com.
Views: 112489 Lecture Snippets
Oracle SQL Column Alias
 
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Views: 57 Kalyan S
Create MySQL Database - MySQL Workbench Tutorial
 
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We model a MySQL database using a diagram in MySQL workbench. We then forward engineer the diagram to create MySQL database on the server. MySQL workbench is a powerful tool for modeling and creating databases and we take advantage of it's relationship tool to create many to many relationship between our main movie table, and stars, directors and genres tables. I don't go into too much detail on how the relationships work in this video on purpose, I wanted to make a general overview of how MySQL workbench can be used to quickly created the model of a database with relationships between tables. ````````````````````````````````````````````````````````````````````````````````````````````` Hey guys, I'm now using Patreon to share improved and updated video lesson material. For a small fee you can access all the downloadable files from this lesson (source code, icons & graphics, cheat sheets) and everything else included in the video from the Patreon page. Additionally, you will get access to ALL Clever Techie videos in HD format with no ads. Thank you so much for supporting Clever Techie :) Download this video's files here: https://www.patreon.com/posts/create-mysql-20819048 This download (Patreon unlock) includes: (Scrape IMDB function php source code, workbench movies relational tables sql source code) + ( You also get access to ALL source code and any downloadable content of ALL Clever Techie videos, as well as access to ALL videos in HD 1080p quality format with all video ads removed! ) ````````````````````````````````````````````````````````````````````````````````````````````` From the video: Let's go ahead and create the database model which will hold all the data now using MySQL Workbench (a free program that you can download here). When you first open the Workbench, create a new connection by clicking on the + icon. I'm going to name my connection localhost and and put "root" for the username. Then press press the storage vault button and enter your password. You can then click on "test the connection" and you should get the message: "successfully made the MySQL connection." At this point, click OK, and then double click on this newly created connection to connect to your MySQL database server. Now go to File---New Model and double click on Add Diagram. This is the part of the program where we're going to be designing our database model. You will see a toolbar on the left side along with all the tools available which we can use to model the database. Go ahead and double-click on the New Table icon which will place a new table in the diagram. When the table shows up on the diagram, double-click on it, the new box will show up at the bottom of the screen where we can rename our table as well as specify all the column names and their appropriate data types. Name this table that we have just created "movies", and then for the very first column, enter "id" which will be the unique identifier for this table. This id will also act as primary key which is going to auto increment so make sure the primary key and auto-increment check boxes are both checked as well as not null (NN). Now let's go ahead and enter the rest of the column names. `````````````````````````````````````````````````````````````````````````````````````````````` ( Website ) https://clevertechie.com - PHP, JavaScript, Wordpress, CSS, and HTML tutorials in video and text format with cool looking graphics and diagrams. ( YouTube Channel ) https://www.youtube.com/c/CleverTechieTube ( Google Plus ) https://goo.gl/J71p6f - clever techie video tutorials. ( Facebook ) https://www.facebook.com/CleverTechie/ ( Twitter ) https://twitter.com/theclevertechie
Views: 276423 Clever Techie
Oracle SQL Developer Tutorial For Beginners   78   Exam Tip   PROJECTION SELECTION and JOINING
 
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Oracle SQL Developer Tutorial For Beginners Series. This course introduces Oracle SQL Development for its subscribers. Currently this is based on Oracle 12c. The test environment is in Windows 10.
Views: 841 Sam Dhanasekaran
Chapter 9 : SQL Set Operators
 
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Set operators are used to join the results of two (or more) SELECT statements.The SET operators available in Oracle 11g are UNION,UNION ALL,INTERSECT,and MINUS. Same number of columns must be selected by all participating SELECT statements.Column names used in the display are taken from the first query. Data types of the column list must be compatible/implicitly convertible by oracle. Oracle will not perform implicit type conversion if corresponding columns in the component queries belong to different data type groups.For example, if a column in the first component query is of data type DATE, and the corresponding column in the second component query is of data type CHAR,Oracle will not perform implicit conversion, but raise ORA-01790 error. Positional ordering must be used to sort the result set. Individual result set ordering is not allowed with Set operators. ORDER BY can appear once at the end of the query. For example, UNION and INTERSECT operators are commutative, i.e. the order of queries is not important; it doesn't change the final result. Performance wise, UNION ALL shows better performance as compared to UNION because resources are not wasted in filtering duplicates and sorting the result set. Set operators can be the part of sub queries. Set operators can't be used in SELECT statements containing TABLE collection expressions. The LONG, BLOB, CLOB, BFILE, VARRAY,or nested table are not permitted for use in Set operators.For update clause is not allowed with the set operators.
Excel Magic Trick 1349: Power Query with Input Variables from Excel Sheet to Extract Records
 
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Download File: http://people.highline.edu/mgirvin/excelisfun.htm See how to use Power Query (Get & Transform) with Input Variables from Excel Sheet to Extract Records and create a Revenue Report. Here are the steps: 1. (00:15) Introduction including Preview of Finished Solution and Preview of steps necessary to accomplish this goal. 2. (02:00) Import and transform Data Set, including removing Columns, Filter For Records and adding an extra Column to calculate Net Revenue using the Number.Round Power Query Function. 3. (06:38) Load Report to Sheet 4. (07:09) Import each Parameter/Criteria Table. 5. (07:36) Convert each Criteria Table to a single Text Item using the Record.Field Power Query Function. 6. (11:38) Declare and Insert Variables into M Code for Report 7. (14:10) Test Reporting System 8. (14:30) Create Recorded Macro To Refresh All and assign it to a Form button 9. (16:40) Test Macro and Reporting System 10. (17:25) Summary
Views: 83648 ExcelIsFun
Oracle SQL Tutorial - Date column in where condition
 
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In this video, we will see how to use date fields or date columns in sql where condition. SQL's used in this video are given below. All employees hired in the month of August across years select * from employees where to_char(hire_date,'MM') = '08';
Views: 19 Ganesh Anbarasu
LAST VALUE function in SQL Server
 
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last_value function in sql server 2008 sql server last_value function returns incorrect data sql server last_value function example sql server last_value function with partition example LAST_VALUE function in SQL Server In this video we will discuss LAST_VALUE function in SQL Server. LAST_VALUE function Introduced in SQL Server 2012 Retrieves the last value from the specified column ORDER BY clause is required PARTITION BY clause is optional ROWS or RANGE clause is optional, but for it to work correctly you may have to explicitly specify a value Syntax : LAST_VALUE(Column_Name) OVER (ORDER BY Col1, Col2, ...) LAST_VALUE function not working as expected : In the following example, LAST_VALUE function does not return the name of the highest paid employee. This is because we have not specified an explicit value for ROWS or RANGE clause. As a result it is using it's default value RANGE BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW. SELECT Name, Gender, Salary, LAST_VALUE(Name) OVER (ORDER BY Salary) AS LastValue FROM Employees LAST_VALUE function working as expected : In the following example, LAST_VALUE function returns the name of the highest paid employee as expected. Notice we have set an explicit value for ROWS or RANGE clause to ROWS BETWEEN UNBOUNDED PRECEDING AND UNBOUNDED FOLLOWING This tells the LAST_VALUE function that it's window starts at the first row and ends at the last row in the result set. SELECT Name, Gender, Salary, LAST_VALUE(Name) OVER (ORDER BY Salary ROWS BETWEEN UNBOUNDED PRECEDING AND UNBOUNDED FOLLOWING) AS LastValue FROM Employees LAST_VALUE function example with partitions : In the following example, LAST_VALUE function returns the name of the highest paid employee from the respective partition. SELECT Name, Gender, Salary, LAST_VALUE(Name) OVER (PARTITION BY Gender ORDER BY Salary ROWS BETWEEN UNBOUNDED PRECEDING AND UNBOUNDED FOLLOWING) AS LastValue FROM Employees Text version of the video http://csharp-video-tutorials.blogspot.com/2015/10/lastvalue-function-in-sql-server.html Slides http://csharp-video-tutorials.blogspot.com/2015/10/lastvalue-function-in-sql-server_9.html All SQL Server Text Articles http://csharp-video-tutorials.blogspot.com/p/free-sql-server-video-tutorials-for.html All SQL Server Slides http://csharp-video-tutorials.blogspot.com/p/sql-server.html Full SQL Server Course https://www.youtube.com/playlist?list=PL4cyC4G0M1RQ_Rm52cQ4CcOJ_T_HXeMB4 All Dot Net and SQL Server Tutorials in English https://www.youtube.com/user/kudvenkat/playlists?view=1&sort=dd All Dot Net and SQL Server Tutorials in Arabic https://www.youtube.com/c/KudvenkatArabic/playlists
Views: 35533 kudvenkat
Over clause in SQL Server
 
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over partition by in sql server 2008 sql server over clause partition partition by clause in sql server 2008 over partition by clause in sql In this video we will discuss the power and use of Over clause in SQL Server. The OVER clause combined with PARTITION BY is used to break up data into partitions. Syntax : function (...) OVER (PARTITION BY col1, Col2, ...) The specified function operates for each partition. For example : COUNT(Gender) OVER (PARTITION BY Gender) will partition the data by GENDER i.e there will 2 partitions (Male and Female) and then the COUNT() function is applied over each partition. Any of the following functions can be used. Please note this is not the complete list. COUNT(), AVG(), SUM(), MIN(), MAX(), ROW_NUMBER(), RANK(), DENSE_RANK() etc. Example : SQl Script to create Employees table Create Table Employees ( Id int primary key, Name nvarchar(50), Gender nvarchar(10), Salary int ) Go Insert Into Employees Values (1, 'Mark', 'Male', 5000) Insert Into Employees Values (2, 'John', 'Male', 4500) Insert Into Employees Values (3, 'Pam', 'Female', 5500) Insert Into Employees Values (4, 'Sara', 'Female', 4000) Insert Into Employees Values (5, 'Todd', 'Male', 3500) Insert Into Employees Values (6, 'Mary', 'Female', 5000) Insert Into Employees Values (7, 'Ben', 'Male', 6500) Insert Into Employees Values (8, 'Jodi', 'Female', 7000) Insert Into Employees Values (9, 'Tom', 'Male', 5500) Insert Into Employees Values (10, 'Ron', 'Male', 5000) Go Write a query to retrieve total count of employees by Gender. Also in the result we want Average, Minimum and Maximum salary by Gender. This can be very easily achieved using a simple GROUP BY query as show below. SELECT Gender, COUNT(*) AS GenderTotal, AVG(Salary) AS AvgSal, MIN(Salary) AS MinSal, MAX(Salary) AS MaxSal FROM Employees GROUP BY Gender What if we want non-aggregated values (like employee Name and Salary) in result set along with aggregated values You cannot include non-aggregated columns in the GROUP BY query. SELECT Name, Salary, Gender, COUNT(*) AS GenderTotal, AVG(Salary) AS AvgSal, MIN(Salary) AS MinSal, MAX(Salary) AS MaxSal FROM Employees GROUP BY Gender The above query will result in the following error : Column 'Employees.Name' is invalid in the select list because it is not contained in either an aggregate function or the GROUP BY clause One way to achieve this is by including the aggregations in a subquery and then JOINING it with the main query as shown in the example below. Look at the amount of T-SQL code we have to write. SELECT Name, Salary, Employees.Gender, Genders.GenderTotals, Genders.AvgSal, Genders.MinSal, Genders.MaxSal FROM Employees INNER JOIN (SELECT Gender, COUNT(*) AS GenderTotals, AVG(Salary) AS AvgSal, MIN(Salary) AS MinSal, MAX(Salary) AS MaxSal FROM Employees GROUP BY Gender) AS Genders ON Genders.Gender = Employees.Gender Better way of doing this is by using the OVER clause combined with PARTITION BY SELECT Name, Salary, Gender, COUNT(Gender) OVER(PARTITION BY Gender) AS GenderTotals, AVG(Salary) OVER(PARTITION BY Gender) AS AvgSal, MIN(Salary) OVER(PARTITION BY Gender) AS MinSal, MAX(Salary) OVER(PARTITION BY Gender) AS MaxSal FROM Employees Text version of the video http://csharp-video-tutorials.blogspot.com/2015/09/over-clause-in-sql-server.html Slides http://csharp-video-tutorials.blogspot.com/2015/09/over-clause-in-sql-server_29.html All SQL Server Text Articles http://csharp-video-tutorials.blogspot.com/p/free-sql-server-video-tutorials-for.html All SQL Server Slides http://csharp-video-tutorials.blogspot.com/p/sql-server.html All Dot Net and SQL Server Tutorials in English https://www.youtube.com/user/kudvenkat/playlists?view=1&sort=dd All Dot Net and SQL Server Tutorials in Arabic https://www.youtube.com/c/KudvenkatArabic/playlists
Views: 93038 kudvenkat
Selecting Specific Columns
 
02:03
Learning Oracle
Views: 220 حسن محمد

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