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EXIST Function in SQL
 
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Join Discussion: http://www.techtud.com/video-lecture/exist-function-sql IMPORTANT LINKS: 1) Official Website: http://www.techtud.com/ 2) Virtual GATE: http://virtualgate.in/login/index.php Both of the above mentioned platforms are COMPLETELY FREE, so feel free to Explore, Learn, Practice & Share! Our Social Media Links: Facebook Page: https://www.facebook.com/techtuduniversity Facebook Group: https://www.facebook.com/groups/virtualgate Google+ Page: https://plus.google.com/+techtud/posts Last but not the least, SUBSCRIBE our YouTube channel to stay updated about the regularly uploaded new videos.
Views: 40244 Techtud
IN VS EXISTS VS JOIN, performance
 
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This video demonstrates the performance effects of using an exists clause instead of an IN clause, also it shows how we can update a simple sub query having an IN clause with an EXISTS or JOIN statement. It also shows that joining would consider the null data, where as an IN clause would neglect null values. If you want more such videos of exciting and amazing 'difference between' concepts, check out the links below : union and union all : https://youtu.be/n9FqQOd8liY char and varchar2 : https://youtu.be/039qzwjWf4k replace and translate : https://youtu.be/HKYF77BGzOE procedure and function : https://youtu.be/q3LmOenL120 rank and dense_rank : https://youtu.be/WGSX998hZ9M delete and truncate : https://youtu.be/u76wMm2byXo %type and %rowtype : https://youtu.be/MlLUFeZ_3eM
Views: 13481 Kishan Mashru
How to use exists statement
 
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Hello Friends In this video i'm going to show you how to use exist in subquery step by step. #exists #oracletutorial #sql
Views: 6779 OCP Technology
SQL SELECT - 13 - SUBCONSULTAS: EXISTS
 
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Todo lo que necesitas está en: http://tutorialesnet.net Redes Sociales: http://tutorialesnet.net/twitter http://tutorialesnet.net/facebook
Views: 7441 TutorialesNET
The SQL EXISTS clause
 
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How to use the EXISTS clause in SQL. For beginners.
Views: 25262 Database by Doug
SQL Error ORA-00942 Table or View Does Not Exist in Oracle Database
 
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How to use Tab View (Data Dictionary) of Oracle Database to solve the SQL Error ORA-00942 Table or View Does Not Exist error in Oracle Database ------------------------------------------------------------------------ ►►►LINKS◄◄◄ Blog: http://bit.ly/ora-00942 Previous Tutorial ► ------------------------------------------------------------------------- ►Make sure you SUBSCRIBE and be the 1st one to see my videos! ------------------------------------------------------------------------- ►►►Find me on Social Media◄◄◄ Follow What I am up to as it happens on https://twitter.com/rebellionrider http://instagram.com/rebellionrider https://plus.google.com/+Rebellionrider http://in.linkedin.com/in/mannbhardwaj/ ___Facebook Official Page of Manish Sharma___ https://www.facebook.com/TheRebellionRider/ ___Facebook Official Page of RebellionRider.com___ https://www.facebook.com/RebellionRider.official/ You can also Email me at for E-mail address please check the About section Please please LIKE and SHARE my videos it makes me happy. Thanks for liking, commenting, sharing and watching more of our videos This is Manish from RebellionRider.com ♥ I LOVE ALL MY VIEWERS AND SUBSCRIBERS
Views: 8722 Manish Sharma
095- Oracle SQL 12c: Correlated Subquery / Exists /not exists
 
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تعلم اوراكل حتى الاحتراف EXAM 1Z0-061 EXAM 1Z0-071
Views: 2134 khaled alkhudari
PL/SQL tutorial 60: Collection Method EXISTS in Oracle Database by Manish Sharma
 
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RebellionRider presents you the latest PL/SQL Tutorial 60 on Collection method EXISTS by Manish Sharma ------------------------------------------------------------------------ ►►►LINKS◄◄◄ Blog : http://bit.ly/exists-function Previous Tutorial ► ------------------------------------------------------------------------- ►Make sure you SUBSCRIBE and be the 1st one to see my videos! ------------------------------------------------------------------------- ►►►Find me on Social Media◄◄◄ Follow What I am up to as it happens on https://twitter.com/rebellionrider http://instagram.com/rebellionrider https://plus.google.com/+Rebellionrider http://in.linkedin.com/in/mannbhardwaj/ ___Facebook Official Page of Manish Sharma___ https://www.facebook.com/TheRebellionRider/ ___Facebook Official Page of RebellionRider.com___ https://www.facebook.com/RebellionRider.official/ You can also Email me at for E-mail address please check the About section Please please LIKE and SHARE my videos it makes me happy. Thanks for liking, commenting, sharing and watching more of our videos This is Manish from RebellionRider.com ♥ I LOVE ALL MY VIEWERS AND SUBSCRIBERS
Views: 8374 Manish Sharma
EXISTS Condition in Oracle Database
 
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#Exists oracle exists vs in, if exists in oracle, oracle not exists vs not in, difference between in and exists in oracle, case when exists oracle, oracle check if record exists, if not exists in oracle, oracle update where exists
Views: 51 Adam Tech
Урок 27. SQL. Подзапрос EXISTS
 
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Oracle SQL.Подзапрос EXISTS является наиболее сложным типом подзапроса в SQL. Но мы попробуем разобраться, здесь очень важно Осознать, что подзапрос EXIST Является предикатом, возвращает нам либо истину либо ложь, то есть в подзапрос EXIST это критерий того, будет на экран выведена данная строка либо нет. Также подзапрос EXISTS подразумевает внешнее объединение то есть внутренний подзапрос связывается определённым отношением с внешним запросом учебная среда https://apex.oracle.com/pls/apex/ схема: SQLADV польз: student1 пароль: student1 будут работать (student2/ student2, student3/ student3 .... student11/ student11) меню SQL Workshop , SQL Command или используйте http://sqlfiddle.com/ скрипт бд для загрузки в sqlfiddle http://sqladv.ru/dev/sql.txt урок и задания http://sqladv.ru/dev/sqlbasic/l27.txt
Oracle Sql : Exists Clause
 
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Topic : Exists Clause 19th Video of this Series Comments/Suggestions are welcome get in touch with us, by mailing [email protected] for Upcoming trainings. This is an Unedited Video from the Live sessions on Sql (RDBMS) I will be posting a complete series of these tutorials on this channel, If you would like to be notified every time i post something ; Please subscribe to this channel and press the bell icon.
Views: 69 CodeSmith 001
SQL UNION, INTERSECT, EXCEPT
 
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Jamie King of Neumont University demonstrating UNION, INTERSECT, and EXCEPT.
Views: 47981 Jamie King
Corso SQL ITA 12 Select annidate con any, in, all, exists; self join
 
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Select annidate con uso degli operatori in, all, exists. Self join o join ricorsive (query su una tabella congiunta con sè stessa).
Views: 10696 fcamuso
SQL.2.- Select. Distinct. Where. Order by. Having. In. Like. Join. Exists. Sum. Count. Max. Min.
 
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Second video-tutorial. SQL.2- Select. Distinct. Where. Order by. Having. In. Like. Join. Exists. Sum. Count. Max. Min. Avg. Cast. Union. Intersection. Except. Create View
Views: 1546 emt K
ORACLE SQL AND PL/SQL INTERVIEW QUESTION : SUBQUERY WITH IN / EXISTS OR SELF JOIN
 
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This video demonstrates the solution of the oracle sql interview question like, find the employees where there manager's salary is more than 15000. This is a classic example of using a subquery or a self join to get the result.
Views: 2981 Kishan Mashru
insert data that not exist in second table in oracle sql.
 
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this tutorial in insert data that not exist in second table means you can select the who table. in oracle you have to learn about all concept and query that help full in features. #insert #oracletutorial #oracleprogramming #multiinsert
Views: 18 EasyWay Coding
Oracle Join Tables تعليم أوراكل
 
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by Mohamed El Desouki - محمد الدسوقى [email protected] Tel :00966 553450836 جامعة سلمان بن عبد العزيز - السعودية - الخرج How to select data from more than one table using Join. كيفية الربط بين أكثر من جدول Text Book: Fundamentals of Database Systems, 5th Edition, by Elmasri/Navathe, published by Addison-W oracle create table statement oracle drop table statement oracle constraints database constraints primary key constraint foreign key constraint check constraint null not null constraint unique constraint insert into statement update statement delete statement select statement basic query where clause select where Like '%' Like '_' select where Like Join Tables inner join equi join
Using Exists Clause With Correlated Subquery in Oracle Database
 
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Exists Clause in Correlated Subqueries with Oracle Database
Views: 38 Adam Tech
Let's Learn SQL! Lesson 82 : EXIST and NOT EXIST Subqueries
 
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Explore SQL with Tom Coffing of Coffing Data Warehousing! In this lesson, learn about EXIST and NOT EXIST Subqueries!
Oracle Database11g tutorials 14 : How to CREATE TABLE using sql developer and command prompt
 
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Oracle Database11g tutorials 14 How to Create table using command prompt and Create table using sql developer Blog Link http://bit.ly/1TkY4Oe Time Line 0:25 Introduction of Tables in Database 1:03 What is Create Table (Introduction of create table) 1:30 Syntax of Create Table 2:08 How to create table using Command Prompt 4:55 How to create table using SQL Developer Links for Oracle Database tutorials 4: database connectivity using SQL developer and command prompt http://youtu.be/wSqoXRlXDUU You can have indepth knowledge about SQL create table here http://www.rebellionrider.com/sql-create-table.html 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 Today in this oracle database tutorial we will see How to CREATE A TABLE. if we have to define a table in layman language then we can say that Tables are just a collection of Rows and Columns but In RDBMS tables are database objects which help in organizing data into ROWS and COLUMNS. We can also say that SQL tables are kind of data structure which are used by database for efficient storage of data. To create a table in our database we use SQL CREATE TABLE command. SQL CREATE TABLE is a type of DATA DEFINITION LANGUAGE also known as DDL. To Create a table in your schema you will require CREATE TABLE system privilege. In our future videos we will see what are system and object privileges and how to grant them to a user. Today for this video we will be using Sample schema HR which already has all the necessary privileges. Ohk Let's see the syntax. CREATE TABLE table name ( column name1 Data-Type(size), column name2 Data-Type(size), ..... ); CREATE TABLE is an oracle reserved word or say an Oracle key word whereas There are 3 different ways of creating a table in Oracle database. Creating a table using Command Line Interface (CLI) in Oracle database For demonstrating how to create table in oracle database using CLI, I'll be using Command prompt. Thats how we create table using command prompt. you can check your table structure by DESCRIBE command for that just write DESC and your table name. Like this Another way of creating a table is by using Graphic user interface (GUI) in Oracle database To demonstrate how to create table using GUI we will use SQL developer. Lets open our SQL developer I am connected to HR schema if you do not know how to create a connection to database using SQL developer please watch my oracle database tutorial 4 that explains database connectivity using SQL developer and command prompt. Link for this video is in the description below. So lets create a table. Creating a table using SQL developer is very easy we do not have to fire any query here. Let's start First of all right click on your connection in which you want to create a table and choose schema browser. This will open a separate schema browser pane or you can expend your connection by clicking this + sign and then right click on table and choose New Table. However I prefer working with schema browser so let's skip to schema browser pane here from the first drop-down list you can choose connection name and in the second drop down list you can choose what database objects you want to work with we want to create a table thus I'll choose table and then click this arrow here and choose option for new table Ok we have created a table wizard first of all give a unique name to your table and add some column as well. For this, click the green plus button. Now we already have a column so give it some name. Also choose a datatype from the list and specify any size you can check this not null column if in case you want to make this a mandatory column you can also specify default value and constraint If you want to make this column a primary key you can click here In my future video i'll show you what are these constraints and different ways of applying them on a column in a table. for this video we will concentrate on create table only so when you are done with all your columns click ok Thats your table You can double click on your table here and can see its structure. Thats it
Views: 189288 Manish Sharma
서브 쿼리 SubQuery IN ANY SOME ALL EXISTS : 오라클 강좌 2016 SQL & PL/SQL 잠자리채널 jamjalee oracle
 
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잠자리 오라클 SQL & PL/SQL 2016에 대한 강좌입니다. 단일행 서브 쿼리, 다중행 서브 쿼리 IN ANY SOME ALL EXISTS 연산자 ▶ https://goo.gl/NmQBOL ▶ 자세히 보기 ▶ ※ 유튜브 잠자리채널 youtube jamjalee channel ▶ http://goo.gl/YluPrC ※ 잠자리채널 구독 jamjalee channel subscribe ▶ https://goo.gl/qx2Jbp ※ 홈페이지 jamjalee homepage ▶ http://goo.gl/nRYDti ※ 동영상 재생목록 youtube jamjalee channel playlist ● 잠자리 소프트웨어 아키텍처 2016 ▶ https://goo.gl/WYeEUD ● 잠자리 오라클 SQL & PL/SQL 2016 ▶ https://goo.gl/NmQBOL ● 잠자리 자바 8 프로그래밍 java programming tutorial ▶ https://goo.gl/YlHDcy ● 잠자리 워드프레스 사용법 wordpress tutorial ▶ https://goo.gl/PXCD91 ● 잠자리 마인크래프트 2016 사용법 minecraft 1.8.3 tutorial ▶ https://goo.gl/pHTs3d ● 잠자리 더 위쳐 와일드 헌트 The Witcher 3 Wild Hunt tutorial ▶ https://goo.gl/AHkSgK
Views: 2216 잠자리코딩
How to use EXISTS / NOT EXISTS Logical Operator in SQL Server -  SQL Server / TSQL Tutorial Part 125
 
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What is Exists / Not Exists Logical Operator in SQL Server Exists returns TRUE if a subquery contains any rows. EXISTS is used when we want to test for the existence of rows specified by a subquery. 1) EXISTS will return TRUE if subquery contains any rows. That is right, if our subquery will return any rows and we have used EXISTS, the outer query is going to return all rows. 2) Use EXISTS and Join with SubQuery Link to scripts used in SQL Server / TSQL Tutorial Video http://www.techbrothersit.com/2016/06/how-to-use-exists-logical-operator-in.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 2016 DBA Tutorial SQL Server / TSQL Tutorial ( Beginner to Advance) http://www.techbrothersit.com/
Views: 8569 TechBrothersIT
Difference between IN and EXISTS clause in database
 
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Difference between IN and EXISTS clause in database
Views: 833 Techie Savy
Oracle Database tutorials 5:  how to Fetch Data using SELECT - SQL statement by Manish Sharma
 
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SELECT – SQL Statement which will help you in fetching data from your database. Learn the concepts of SELECT statement with easy examples in this SQL tutorial by Manish Sharma Contacts www.Facebook.com/TheRebellionRider www.twitter.com/rebellionrider www.instagram.com/RebellionRider in.linkedin.com/in/mannbhardwaj/ Thanks for linking, commenting, sharing and watching more of our videos This is Manish from RebellionRider
Views: 201981 Manish Sharma
EXISTS vs IN
 
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EXISTS vs IN
Views: 41 TUTOR SC
SQL Server except operator
 
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sql except example sql except operator example sql server except example sql server except order by sql server except clause SQL Server except operator In this video we will discuss SQL Server except operator with examples. EXCEPT operator returns unique rows from the left query that aren’t in the right query’s results. Introduced in SQL Server 2005 The number and the order of the columns must be the same in all queries The data types must be same or compatible This is similar to minus operator in oracle Let us understand this with an example. SQL Script to create the tables Create Table TableA ( Id int primary key, Name nvarchar(50), Gender nvarchar(10) ) Go Insert into TableA values (1, 'Mark', 'Male') Insert into TableA values (2, 'Mary', 'Female') Insert into TableA values (3, 'Steve', 'Male') Insert into TableA values (4, 'John', 'Male') Insert into TableA values (5, 'Sara', 'Female') Go Create Table TableB ( Id int primary key, Name nvarchar(50), Gender nvarchar(10) ) Go Insert into TableB values (4, 'John', 'Male') Insert into TableB values (5, 'Sara', 'Female') Insert into TableB values (6, 'Pam', 'Female') Insert into TableB values (7, 'Rebeka', 'Female') Insert into TableB values (8, 'Jordan', 'Male') Go Notice that the following query returns the unique rows from the left query that aren’t in the right query’s results. Select Id, Name, Gender From TableA Except Select Id, Name, Gender From TableB To retrieve all of the rows from Table B that does not exist in Table A, reverse the two queries as shown below. Select Id, Name, Gender From TableB Except Select Id, Name, Gender From TableA You can also use Except operator on a single table. SQL script to create tblEmployees table Create table tblEmployees ( Id int identity primary key, Name nvarchar(100), Gender nvarchar(10), Salary int ) Go Insert into tblEmployees values ('Mark', 'Male', 52000) Insert into tblEmployees values ('Mary', 'Female', 55000) Insert into tblEmployees values ('Steve', 'Male', 45000) Insert into tblEmployees values ('John', 'Male', 40000) Insert into tblEmployees values ('Sara', 'Female', 48000) Insert into tblEmployees values ('Pam', 'Female', 60000) Insert into tblEmployees values ('Tom', 'Male', 58000) Insert into tblEmployees values ('George', 'Male', 65000) Insert into tblEmployees values ('Tina', 'Female', 67000) Insert into tblEmployees values ('Ben', 'Male', 80000) Go Except operator on a single table Select Id, Name, Gender, Salary From tblEmployees Where Salary ]= 50000 Except Select Id, Name, Gender, Salary From tblEmployees Where Salary ]= 60000 Order By clause should be used only once after the right query Select Id, Name, Gender, Salary From tblEmployees Where Salary ]= 50000 Except Select Id, Name, Gender, Salary From tblEmployees Where Salary ]= 60000 order By Name Text version of the video http://csharp-video-tutorials.blogspot.com/2015/09/sql-server-except-operator.html Slides http://csharp-video-tutorials.blogspot.com/2015/09/adsbygoogle-window.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: 44009 kudvenkat
SQL Tutorial 12 Advanced Subqueries returning multiple columns
 
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SQL Tutorial on Advanced Subqueries returning multiple columns Check out our website: http://www.telusko.com Follow Telusko on Twitter: https://twitter.com/navinreddy20 Follow on Facebook: Telusko : https://www.facebook.com/teluskolearnings Navin Reddy : https://www.facebook.com/navintelusko Follow Navin Reddy on Instagram: https://www.instagram.com/navinreddy20 Subscribe to our other channel: Navin Reddy : https://www.youtube.com/channel/UCxmkk8bMSOF-UBF43z-pdGQ?sub_confirmation=1 Telusko Hindi : https://www.youtube.com/channel/UCitzw4ROeTVGRRLnCPws-cw?sub_confirmation=1
Views: 71303 Telusko
WHERE, ORDER BY, GROUP BY statement in oracle SQL
 
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Oracle SQL tutorials, How to select using where, order by, group by comands and using alias
Create new connection with new user in Oracle SQL Developer
 
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This video shows you how to create a new connection using a new user account (other than the system user account) in Oracle SQL Developer, so that you have a clean workspace without all the clutter of system tables. It is NOT a general introduction to using Oracle SQL Developer.
Views: 377113 Chitu Okoli
Oracle SQL Programming Lesson 4 in Jinghpaw Language - Set Operators
 
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Compiling SQL queries using Union, Union All, Intercept, Minus, Where Exists, Where Not Exists Operators against the oracle database tables. Please watch in HD format for better video quality. --append/stack data (union,union all) --UNION removes duplicate rows. --UNION ALL does not remove duplicate rows. --Each SELECT statement within the UNION must have the same number of fields in the result sets with similar data types. select 'foo' as test_column from dual union select 'foo' as test_column from dual; select distinct test_column from (select 'foo' as test_column from dual union all select 'foo' as test_column from dual); Select region_name from regions Union Select region_name from regions; select first_name,last_name,job_id,manager_id,salary,deptment_id from employees where department_id in (20,60); --Union /union all select job_id,manager_id,'DEPT 20' as dept from employees where department_id=20 union all select job_id,manager_id,'DEPT 60' as dept from employees where department_id=60; --intersect returns only the rows common to the results of two queries select 'foo' as test_column from dual intersect select 'foo' as test_column from dual; Select region_name from regions; Select region_name from regions intersect Select region_name from regions; -- minus=except returns the rows from the first query that do not exist in the second query select 'foo' as test_column from dual minus select 'foo' as test_column from dual; Select region_name from regions minus Select region_name from regions; select first_name,last_name,job_id,manager_id,salary,'DEPT 20' as dept from employees where department_id=20 minus select first_name,last_name,job_id,manager_id,salary,'DEPT 60' as dept from employees where department_id=60; --complex compound queries Select department_id, count(*) from employees Where department_id in (20,30,40) Group by department_id; Select department_id, count(*) from employees Where department_id in (20) Group by department_id Union all Select department_id, count(*) from employees Where department_id in (30) Group by department_id Union all Select department_id, count(*) from employees Where department_id in (40) Group by department_id; Select department_id, count(*) from employees Where department_id in (20) Group by department_id intersect Select department_id, count(*) from employees Where department_id in (30) Group by department_id minus Select department_id, count(*) from employees Where department_id in (40) Group by department_id; Select department_id, count(*) from employees Where department_id in (20) Group by department_id Union Select department_id, count(*) from employees Where department_id in (30) Group by department_id Union all Select department_id, count(*) from employees Where department_id in (40) Group by department_id; --where exists, in / not exists, not in select e.last_name, e.department_id, e.salary from employees e where exists (select * from departments d where e.department_id=d.department_id); select e.last_name, e.department_id, e.salary from employees e where e.department_id in (select department_id from departments); select e.last_name, e.department_id, e.salary from employees e where not exists (select * from departments d where e.department_id=d.department_id); select e.last_name, e.department_id, e.salary from employees e where e.department_id not in (select department_id from departments);
Views: 42 Hkau Doi
Oracle SQL Tutorial 16 - Parent Child Relationships
 
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So far in this series we have discussed database design, creating tables, and constraints. We've brought up the concept of foreign keys, but we have not explained how to create them. That is the goal of this video and the upcoming videos. We want to study those foreign keys! Let's make them not so foreign. Let's learn the proper way to define a foreign key. As a reminder, a foreign key is a column that references a column of another table. The column it references must either be a primary key, or have the UNIQUE constraint. This means that every value inside of the column that is labeled as a foreign key, there must be that value in some row of the referenced column. As an example, imagine that we have the users table, and we have a table service_requests. We could have a column in the service_request that references a column in the users table. Usually this would be the primary key that is referenced, but there is nothing stopping you from referencing a unique column. Just for fun, let's go through an example using the username column. If we have a service_requests table, every single row within the table is going to be what some would consider an instance of a service_request. This means that the table columns are like the blueprint for what a service request looks like and then each row is an individual service request. If we have one of the columns labeled as a foreign key to the username of the users table, what does that mean practically? It means that for a single row, the value for that column must be a value that exists in the users table. We could have a service_request submitted by a user with the username of Yoloswagman. This means that there must be a row inside of the users table that has the value Yoloswagman for the username column. This brings up the concept of parent and child relationships. Yoloswagman in this situation is the parent, and his service request is the child. When we draw it out, it makes sense why a primary key must be UNIQUE. If we had two Yoloswagmans, the child would not know which column is the parent. The same applies if we were using IDs and we had So remember, always reference a primary key or a column with the UNIQUE constraint. Now, I have a question for you. Do foreign keys automatically have the UNIQUE constraint, just like primary keys? The answer is no. A parent row can have many child rows. It makes sense because the user could submit multiple service requests. Can we force the column to be unique? Absolutely. If that was the case, the user could only make one service request. Another question. Do foreign keys automatically have the NOT NULL constraint, just like primary keys? The answer is no. Essentially what this means is that a child could be created with no parent. Can we force the column to be NOT NULL? Absolutely. It is ok in some situations to allow the row to be null, but in this situation it makes no sense. It would be wise for us to add that constraint ourselves. So now that you understand some more differences between primary and foreign keys and parent child relationships, take all of these questions into consideration when you are creating foreign keys. In the next video, we are going to start a small project that is going to require multiple tables. We'll take a video to design our structure and then we'll get to creating those foreign keys in Oracle SQL Developer. Stick around and if you like these videos please be a serious supporter and subscribe to my channel. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ HELP ME! http://www.patreon.com/calebcurry Subscribe to my newsletter: http://bit.ly/JoinCCNewsletter Donate!: http://bit.ly/DonateCTVM2. ~~~~~~~~~~~~~~~Additional Links~~~~~~~~~~~~~~~ More content: http://CalebCurry.com Facebook: http://www.facebook.com/CalebTheVideoMaker Google+: https://plus.google.com/+CalebTheVideoMaker2 Twitter: http://twitter.com/calebCurry Amazing Web Hosting - http://bit.ly/ccbluehost (The best web hosting for a cheap price!)
Views: 14832 Caleb Curry
SQL 136 Subselect, EXISTS with Subselects
 
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Explains how EXISTS with subselects work. From http://ComputerBasedTrainingInc.com SQL Course. Learn by doing SQL commands for ANSI Standard SQL, Access, DB2, MySQL, Oracle, PostgreSQL, and SQL Server.
Views: 4884 cbtinc
learn oracle sql online tutorial 2
 
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Although SQL is an ANSI (American National Standards Institute) standard, there are different versions of the SQL language. However, to be compliant with the ANSI standard, they all support at least the major commands (such as SELECT, UPDATE, DELETE, INSERT, WHERE) in a similar manner. Using SQL in Your Web Site To build a web site that shows data from a database, you will need: An RDBMS database program (i.e. MS Access, SQL Server, MySQL) To use a server-side scripting language, like PHP or ASP To use SQL to get the data you want To use HTML / CSS. Oracle Live SQL exists to provide the Oracle database community with an easy online way to test and share SQL and PL/SQL application development concepts. Browser based SQL worksheet access to an Oracle database schema Ability to save and share SQL script Schema browser to view and extend database objects Interactive educational tutorials Customized data access examples for PL/SQL, Java, PHP, C Learn more by using Live SQL yourself, all you need is your Oracle Technology Network (OTN) credentials and an interest in learning SQL. how to fix or repair a corrupted usb flash drive or cd card using command prompt: https://www.youtube.com/edit?video_id=0TxJSNcMYlI how to copy a folder using cmd: https://www.youtube.com/watch?v=Lblhb... how to move a folder using cmd: https://www.youtube.com/watch?v=YFfHZ... how to dell files in cmd: https://www.youtube.com/watch?v=3-lqg... how to make and remove directory: https://www.youtube.com/edit?video_id... how to change color and title in cmd: https://www.youtube.com/edit?video_id... how to change directory in command prompt: https://www.youtube.com/watch?v=SmLYx... join our group: ► https://www.facebook.com/groups/24299... ► Follow on Google+: http://[email protected] ► Follow on Twitter: https://twitter.com/@rananavi4766669 :
Views: 563 The Learning Tree
Lec-47: SQL Queries and Subqueries (part-1) | Database Management System
 
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Please Like, Subscribe the channel and give your valuable feedback. Need your Support.. Lecture By: Mr. Varun Singla Facebook page link : https://www.facebook.com/gatesmashers/ #Subqueries#SqlDBMS#freeEducationGATE
Views: 174722 Gate Smashers
NULL-Related Functions in Oracle
 
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An overview of some of the functions Oracle provides to handle NULL values in SQL and PL/SQL. For more information see: https://oracle-base.com/articles/misc/null-related-functions Website: https://oracle-base.com Blog: https://oracle-base.com/blog Twitter: https://twitter.com/oraclebase Cameo by Bjoern Rost Blog: http://portrix-systems.de/blog/brost/ Twitter: https://twitter.com/brost Cameo appearances are for fun, not an endorsement of the content of this video.
Views: 2787 ORACLE-BASE.com
ꘒ0001 Select From Oracle Errors ORA-00000 .. ORA-65536
 
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ORA-nnnnn Errors with a Simple Query.
Views: 173 Geraldo Viana
How To Install MySQL on Windows 10
 
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In this post we will learn how to How To Install MySQL on Windows 10. The same procedure can be used for installing MySQL on Windows 8 / Windows 7. But first let's see What is MySQL . MySQL is a very popular, open source database. Officially pronounced “my Ess Que Ell” (not my sequel). Handles very large databases; very fast performance. Why are we using MySQL? Free (much cheaper than Oracle!) Each student can install MySQL locally. Easy to use Shell for creating tables, querying tables, etc.Easy to use with Java JDBC. While installing MySQL, it will prompt you to create a root password . At this stage please select a safe and secure password . Make sure you remember the password, to use it later.MySQL tutorial for beginners and professionals with examples on CRUD, insert statement, select statement, update statement, delete statement, use database, keys, joins etc. -------------------Online Courses to learn---------------------------- Data Analytics with R Certification Training- http://bit.ly/2rSKHNP DevOps Certification Training - http://bit.ly/2T5P6bQ AWS Architect Certification Training - http://bit.ly/2PRHDeF Python Certification Training for Data Science - http://bit.ly/2BB3PV8 Java, J2EE & SOA Certification Training - http://bit.ly/2EKbwMK AI & Deep Learning with TensorFlow - http://bit.ly/2AeIHUR Big Data Hadoop Certification Training- http://bit.ly/2ReOl31 AWS Architect Certification Training - http://bit.ly/2EJhXjk Selenium Certification Training - http://bit.ly/2BFrfZs Tableau Training & Certification - http://bit.ly/2rODzSK Linux Administration Certification Training-http://bit.ly/2Gy9GQH ----------------------Follow--------------------------------------------- My Website - http://www.codebind.com My Blog - https://goo.gl/Nd2pFn My Facebook Page - https://goo.gl/eLp2cQ Google+ - https://goo.gl/lvC5FX Twitter - https://twitter.com/ProgrammingKnow Pinterest - https://goo.gl/kCInUp Text Case Converter - https://goo.gl/pVpcwL ------------------Facebook Links ---------------------------------------- http://fb.me/ProgrammingKnowledgeLearning/ http://fb.me/AndroidTutorialsForBeginners http://fb.me/Programmingknowledge http://fb.me/CppProgrammingLanguage http://fb.me/JavaTutorialsAndCode http://fb.me/SQLiteTutorial http://fb.me/UbuntuLinuxTutorials http://fb.me/EasyOnlineConverter
Views: 692502 ProgrammingKnowledge
How To Check If Column Exists for a Table Or View in Database in SQL Server - SQL Server Tutorial
 
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On daily basis, we come across this scenario when we have to find out if a column exists for a Table or View in Database. Specially if we are debugging SQL Server Reports/An application, we take a column name or part of it and want to know that from which table this column is used. We can query INFORMATION_SCHEMA.COLUMNS view to get this information. blog post link for scripts used in this video http://sqlage.blogspot.com/2014/01/tsql-how-to-check-if-column-exists-for.html
Views: 5162 TechBrothersIT
SQL   2  Select  Distinct  Where  Order by  Having  In  Like   Join  Exists  Sum  Count  Max  Min
 
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Deuxième vidéo-tutoriel SQL - Select. Distinct. Where. Order by. Having. In. Like. Join. Exists. Sum. Count. Max. Min. Avg. Cast. Union. Intersection. Except. Create View.
Views: 304 emt
Filtering Data with WHERE (Introduction to Oracle SQL)
 
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How to restrict the rows you display with the WHERE clause. The full Introduction to Oracle SQL course is available here: https://www.databasestar.com/introduction-to-oracle-sql-course/
Views: 279 Database Star
SQL Tutorial - 13: Inserting Data Into a Table From Another Table
 
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In this tutorial we'll learn to use the INSERT Query to copy data from one table into another.
Views: 269668 The Bad Tutorials
SQL Subqueries | SQL Tutorial for Beginners with Examples
 
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SQL Subquery | SQL Tutorial for Beginners with Examples For Complete Tutorial watch https://www.youtube.com/watch?v=_vFiyFaQCPA SQL Tutorial. SQL is a standard language for storing, manipulating and retrieving data in databases. Our SQL tutorial will teach you how to use SQL in: MySQL, SQL Server, MS Access, Oracle, Sybase, Informix, Postgres, and other database systems. SQL Subquery, SQL subqueries
Views: 17583 Extern Code
Oracle Database Tutorial 9: The "and" and "or" Operator In Sql
 
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sql series playlist ===)https://www.youtube.com/watch?v=-ixZ4YQ4Uco&list=PL7nQsQekG89yNvQUtbPa4gLeZlprYUr54 SQL Select Top SQL Min and Max SQL Count, Avg, Sum SQL Like SQL Wildcards SQL In SQL Between SQL Aliases SQL Joins SQL Inner Join SQL Left Join SQL Right Join SQL Full Join SQL Self Join SQL Union SQL Group By SQL Having SQL Exists SQL Any, All SQL Select Into SQL Insert Into Select SQL Null Functions SQL Comments SQL Database SQL Create DB SQL Drop DB SQL Create Table SQL Drop Table SQL Alter Table SQL Constraints SQL Not Null SQL Unique SQL Primary Key SQL Foreign Key SQL Check SQL Default SQL Index SQL Auto Increment SQL Dates SQL Views SQL Injection SQL Hosting SQL References MySQL Functions SQL Server Functions MS Access Functions Oracle Functions SQL Operators SQL Data Types SQL Quick Ref SQL Quiz SQL Quiz SQL AND, OR and NOT Operators The SQL AND, OR and NOT Operators The WHERE clause can be combined with AND, OR, and NOT operators. The AND and OR operators are used to filter records based on more than one condition: The AND operator displays a record if all the conditions separated by AND is TRUE. The OR operator displays a record if any of the conditions separated by OR is TRUE. The NOT operator displays a record if the condition(s) is NOT TRUE. sql multiple or sql like not in operator in sql sql order by sql update sql not in sql where not equal
PL/SQL tutorial 12: PL/SQL WHILE Loop in Oracle Database
 
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Iterative statements/loop series learn the concepts of While Loop in PL/SQL or In Oracle Database with Examples. also learn how to handle boolean expression in while loop ------------------------------------------------------------------------ ►►►LINKS◄◄◄ Blog : http://bit.ly/while-loop-in-pl-sql Previous Tutorial ► Simple Loop: https://youtu.be/AFx6QYcY1CU ------------------------------------------------------------------------- ►►►Let's Get Free Uber Cab◄◄◄ Use Referral Code UberRebellionRider and get $20 free for your first ride. ------------------------------------------------------------------------- ►Make sure you SUBSCRIBE and be the 1st one to see my videos! ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ►►►Find me on Social Media◄◄◄ Follow What I am up to as it happens on https://twitter.com/rebellionrider https://www.facebook.com/imthebhardwaj http://instagram.com/rebellionrider https://plus.google.com/+Rebellionrider http://in.linkedin.com/in/mannbhardwaj/ http://rebellionrider.tumblr.com/ http://www.pinterest.com/rebellionrider/ You can also Email me at for E-mail address please check About section Please please LIKE and SHARE my videos it makes me happy. Thanks for liking, commenting, sharing and watching more of our videos This is Manish from RebellionRider.com ♥ I LOVE ALL MY VIEWERS AND SUBSCRIBERS
Views: 63477 Manish Sharma