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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: 40308 Techtud
The SQL EXISTS clause
 
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How to use the EXISTS clause in SQL. For beginners.
Views: 25310 Database by Doug
095- Oracle SQL 12c: Correlated Subquery / Exists /not exists
 
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تعلم اوراكل حتى الاحتراف EXAM 1Z0-061 EXAM 1Z0-071
Views: 2141 khaled alkhudari
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: 13501 Kishan Mashru
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!
SQL UNION, INTERSECT, EXCEPT
 
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Jamie King of Neumont University demonstrating UNION, INTERSECT, and EXCEPT.
Views: 48090 Jamie King
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: 8757 Manish Sharma
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: 7467 TutorialesNET
Oracle SQL Tutorial 22 - Why Primary Keys Shouldn't Change
 
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In the last video I mentioned that with our database design it is important to make sure that nobody tries to update a user's username. What happens if they do? Nothing horrible, Oracle will just throw an error. That's not such a big deal, but if you are hoping to make some kind of application that allows someone to change their username, this is not the best set up. Why? If you look at the projects table, we have a foreign key that references the username. Let's assume for a moment that Oracle allows you to do anything with your data. That means that if a user updates their username, there will be projects created by users that don't exist. Or a user could change their name to the previous owner. To fix this problem, we would need something such as an ON UPDATE CASCADE command for our foreign key. That would mean that if the user updated their username, the columns that reference that username would also update to the new value. This exists in some database management systems, but this does not exist in Oracle at the time of this video. How do we get around this problem? I'm sure we could conjure up something to allow us to update the username, but the easiest solution is to reference the user_id instead of the username. That way, when the username is updated, nothing changes inside of the foreign key. As a general rule, primary keys should never change. Foreign keys CAN change, but they should not change because a primary key changed. So, if we did happen to use a username as a column, it would be frowned upon if the username had to change because the column it references changes. However, it would be acceptable to change the foreign key if we needed to point to a new entity in the users table. Even if a username is never intended to change, these complications bother a lot of people. You can mitigate these problems by only referencing surrogate keys in foreign keys. This has the downside though that when you retrieve the data, you are going to have to do more work to make the data readable. For example, we had a table that was called project_users. It is essentially a table that says what users are part of what projects. We could have the foreign keys reference the project's name and the user's username. Then when you could say SELECT * FROM project_users. The data would be completely readable without doing anything. If you switch to only referencing surrogate primary keys, you will have a bunch of random numbers that don't mean anything and will have to be joined with other tables…which is really super frustrating when later you have to join a thousand tables to read anything. Which side do you prefer? Pick a side. Choose wisely. I'll see you all in the next video ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 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: 6674 Caleb Curry
Sql - Insert if not exists query
 
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sql insert if not exists In many cases we need to insert a row by checking whether it is already available or not. First we need to find a row is present or not. then if it is present, we skip the insert process. If the row is not present, then we insert the row. This query will help to insert rows only if not present. You can use this query directly in your application, where you need to check the presence before insert. The syntax is : merge into tblname i using (select ‘val1' as a1,‘val2' as a2,‘Val3' as a3, …. , ‘valN' as an) d on i.attribute1=d.a1 when not matched then insert (Attribute1,Attribute2,Attribute3, …. , AttributeN) values (d.a1,d.a2,d.a3,…,d.an); The example is merge into items i using (select '7' as itemid,'puri' as itemname,'25' as itemcost) d on d.itemid=i.itemid when not matched then insert (itemid,name,price) values (d.itemid,d.itemname,d.itemcost); Like us on FB https://www.facebook.com/Eddy5SmartSolutions/?fref=ts Subscribe Our Channel https://www.youtube.com/channel/UCtUgeNnytvnb51p25pcz58g
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
ORACLE SQL AND PL/SQL INTERVIEW QUESTION : SUBQUERY WITH NULL / NOT IN / NOT EXISTS OR OUTER JOIN
 
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This video demonstrates the oracle sql interview question where one need to use either not in, not exists or an outer join to get the desired result. For example if one is asked to fetch records from department table where department_id is not present in employee table
Views: 2318 Kishan Mashru
SQL EXISTS VE NOT EXISTS KULLANIMI
 
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SQL: EXISTS Condition This SQL tutorial explains how to use the SQL EXISTS condition with syntax and examples. Click the Try It button next to an example to test it for yourself in our SQL Editor. Description The SQL EXISTS condition is used in combination with a subquery and is considered to be met, if the subquery returns at least one row. It can be used in a SELECT, INSERT, UPDATE, or DELETE statement.
Views: 99 gracia heys
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: 8585 TechBrothersIT
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: 6791 OCP Technology
ORACLE SQL INTERVIEW QUESTION : HOW TO SELECT ODD OR EVEN ROWS FROM A TABLE IN ORACLE
 
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This video tutorial answers the frequently asked interview question, how to select only odd or even records in oracle sql, after watching this video you will understand more on the topic and will be able to answer this interview question with a lot of confidence.
Views: 4927 Kishan Mashru
SQL  subqueries - Lesson 8 (EXISTS, NOT EXISTS, ALL, ANY)
 
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Subqueries are nested queries with another main query. Learn how to use subqueries as part of main queries and with aggregate functions using EXISTS | NOT EXISTS, ANY | ALL Links to all SQL Lessons: SQL Lesson 8 - Subqueries https://youtu.be/7DxuPcx-mRI SQL Lesson 6 - JOIN (INNER, LEFT, RIGHT) https://youtu.be/_NrRRzCjFGE SQL Lesson 5 - Constraints (Default, Primary Key, Foreign Key …) https://youtu.be/BtmHISzqYjQ SQL Lesson 4 - GROUP BY, HAVING, String Functions https://youtu.be/zClzY2fE2fA SQL Lesson 3 - Aggregate Functions SUM, AVG etc. https://youtu.be/w1F0UgsYfis SQL Lesson 2 - Logical, Conditional and Arithmetic Operators https://youtu.be/OpRO1atoe84 SQL Lesson 1 - Basics of SQL Queries https://youtu.be/pJCyTBkoIKA
Views: 697 masti supreme
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: 44083 kudvenkat
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
create and use function in sql. not exist in SQL PART 8
 
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sql tutorial for beginners. not exists function in sql. part 8 create and use function in sql. not exists sql statement, how to write an sql statement of the records of a table where not exist in other table (child table) in sql statement. sql tutorial for beginners you can use this statement in sql view, sql stored procedure, sql function. ~~~~~~~~~~~~~ Subscriber will be notified when I will upload new tutorials in future. Many more new tutorials coming soon, so stay tuned! https://www.youtube.com/swiftlearn ~~~~~~~~~~~~~ You can also know all the programming techniques, and bug fixing, error solution in my channel Swift learn. The main topics of this channel are c#.net, asp.net, WCF, sql server, crystal report, RDLC report, HTML, CSS, javascript, Android etc. ~~~~~~~~~~~~~ Share this video with anyone if you think as useful. Please leave any suggestions for future tutorials in the comment section below. ~~~~~~~~~~~~~ Connect with me https://www.facebook.com/groups/swiftlearn/ All playlist c# tutorial for beginners Swift Learn https://www.youtube.com/playlist?list=PLINPYKVRUHyXoPn0-4NIdFn8RrQQDdAki c# linq to sql tutorial Swift Learn https://www.youtube.com/playlist?list=PLINPYKVRUHyVsic1g2CUn2pR5aKjNd3Nc asp.net tutorial for beginners full Swift Learn https://www.youtube.com/playlist?list=PLINPYKVRUHyUjmHrYfAq1l8pe5eXhkZqF crystal report c# in sql Swift Learn https://www.youtube.com/playlist?list=PLINPYKVRUHyWao6CC3Eu0srQxJjgkfLsm SQL Tutorial for beginners full Swift Learn https://www.youtube.com/playlist?list=PLINPYKVRUHyVOv6mx6xU7HEgGcfLk4Kmz
Views: 125 Swift Learn
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: 8395 Manish Sharma
MySQL Tutorial #12 in Hindi: SubQuery(Nested Query) with EXISTS and NOT EXISTS Clause
 
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MySQL Tutorial #12 in Hindi: SubQuery(Nested Query) with EXISTS and NOT EXISTS Clause - Solved Examples MySQL tutorial for Beginners MySQL Installation Guide How to Install MySQL on windows 10
Lesson 4 - SELECT Clause in SQL (Oracle SQL Certification)
 
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Access all of my courses using the below discount: https://www.jobreadyprogrammer.com/p/all-access-pass/?product_id=1065350&coupon_code=60_PERCENT_DISCOUNT&preview=logged_out #Oracle #Java #Data analysis Get ready to acquire some seriously marketable programming skills! You can't consider yourself a complete end to end developer until you can code in SQL. Today, data has become the hottest topic in technology and a company's biggest asset is their data. All databases require the language SQL to store and retrieve data. Salaries for junior level SQL Developers are upwards of $70,000 - $90,000 dollars a year! The great thing is, for this course, you do not need any prior experience in programming what so ever. SQL is a different animal and we're going to demystify the language from scratch and prepare you with plenty of progressively challenging assignments so that by the time you've completed the course (in 2 months), you can call your self an Oracle SQL Master! Oracle is the most popular relational database in the world! This course will prepare you to be job-ready in just 1 month of study and practice. All exercises and solutions are in the lectures. In several lectures I ask students to pause the video and complete the assignment before resuming to watch my solution. MAKE SURE YOU WORK OUT THE PROBLEMS ON YOUR OWN BEFORE MOVING ON TO MY SOLUTION!! Who this course is for: Anyone willing to get into the software development career Anyone willing to Master SQL and get a job as a well paid Oracle SQL Developer Anyone willing to work hard in mastering the SQL language Anyone who is interested in passing the Oracle 1Z0-071 exam!
Views: 8460 Imtiaz Ahmad
Subqueries in sql   Part 59
 
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In this video we will discuss about subqueries in sql server. Let us understand subqueris with an example. Please create the required tables and insert sample data using the script below. Create Table tblProducts ( [Id] int identity primary key, [Name] nvarchar(50), [Description] nvarchar(250) ) Create Table tblProductSales ( Id int primary key identity, ProductId int foreign key references tblProducts(Id), UnitPrice int, QuantitySold int ) Insert into tblProducts values ('TV', '52 inch black color LCD TV') Insert into tblProducts values ('Laptop', 'Very thin black color acer laptop') Insert into tblProducts values ('Desktop', 'HP high performance desktop') Insert into tblProductSales values(3, 450, 5) Insert into tblProductSales values(2, 250, 7) Insert into tblProductSales values(3, 450, 4) Insert into tblProductSales values(3, 450, 9) Write a query to retrieve products that are not at all sold? This can be very easily achieved using subquery as shown below. Select [Id], [Name], [Description] from tblProducts where Id not in (Select Distinct ProductId from tblProductSales) Most of the times subqueries can be very easily replaced with joins. The above query is rewritten using joins and produces the same results. Select tblProducts.[Id], [Name], [Description] from tblProducts left join tblProductSales on tblProducts.Id = tblProductSales.ProductId where tblProductSales.ProductId IS NULL In this example, we have seen how to use a subquery in the where clause. Let us now discuss about using a sub query in the SELECT clause. Write a query to retrieve the NAME and TOTALQUANTITY sold, using a subquery. Select [Name], (Select SUM(QuantitySold) from tblProductSales where ProductId = tblProducts.Id) as TotalQuantity from tblProducts order by Name Query with an equivalent join that produces the same result. Select [Name], SUM(QuantitySold) as TotalQuantity from tblProducts left join tblProductSales on tblProducts.Id = tblProductSales.ProductId group by [Name] order by Name From these examples, it should be very clear that, a subquery is simply a select statement, that returns a single value and can be nested inside a SELECT, UPDATE, INSERT, or DELETE statement. It is also possible to nest a subquery inside another subquery. According to MSDN, subqueries can be nested upto 32 levels. Subqueries are always encolsed in paranthesis and are also called as inner queries, and the query containing the subquery is called as outer query. The columns from a table that is present only inside a subquery, cannot be used in the SELECT list of the outer query. Next Video: What to choose for performance? Queries that involve a subquery or a join Text version of the video http://csharp-video-tutorials.blogspot.com/2013/01/subqueries-in-sql-part-59.html Slides http://csharp-video-tutorials.blogspot.com/2013/09/part-59-subqueries-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
Views: 218716 kudvenkat
34. SQL MINUS and MINUS vs LEFT JOIN
 
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SQL Minus(-) Operator with example. This video explains how the keywords INTERSECT, UNION, UNION ALL, MINUS, and EXCEPT are used in SQL. For INTERSECT visit : https://youtu.be/sogh3fKoGy8
Views: 856 ProSchool
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: 71558 Telusko
ACCESS 2016 SQL LESSON  26 USING THE EXIST OPERATOR WITH  SELECT
 
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Using the SQL operator EXISTS in conjunction with the SELECT statement
LNNVL FUNCTION IN ORACLE SQL
 
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This video is the 5th video in the series of 'working with null', this video explains the working of the lnnvl function in oracle sql with simple and easy to understand example. LNNVL provides a concise way to evaluate a condition when one or both operands of the condition may be null. The function can be used only in the WHERE clause of a query. It takes as an argument a condition and returns TRUE if the condition is FALSE or UNKNOWN and FALSE if the condition is TRUE. LNNVL can be used anywhere a scalar expression can appear, even in contexts where the IS [NOT] NULL, AND, or OR conditions are not valid but would otherwise be required to account for potential nulls. Oracle Database sometimes uses the LNNVL function internally in this way to rewrite NOT IN conditions as NOT EXISTS conditions. In such cases, output from EXPLAIN PLAN shows this operation in the plan table output. The condition can evaluate any scalar values but cannot be a compound condition containing AND, OR, or BETWEEN.
Views: 685 Kishan Mashru
Difference between IN and EXISTS clause in database
 
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Difference between IN and EXISTS clause in database
Views: 834 Techie Savy
SQL EXISTS() Existential Subqueries
 
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Desmonstrates SQL existential subqueries.
Views: 21205 Jamie King
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
Основы SQL. SQL подзапросы SELECT и связанные подзапросы в базах данных SQLite. SQL оператор EXISTS
 
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Ранее мы рассмотрели оператор IN и тогда мы сказали, что данный оператор может быть использован для написания подзапросов. Также для подзапросов очень часто используется SQL оператор EXISTS. Оператор EXISTS переводится на русский язык как "существует". Когда мы работали с объектами базы данных, то очень часто использовали конструкции: IF EXISTS и IF NOT EXISTS. Когда оператор EXISTS используется вместе с SQL командой SELECT, то выполняется "проверка на существование" и СУБД определяет: выводить результаты нам на экран или нет. Вообще, подзапросы в SQL можно использовать с любыми операторами и даже использовать подзапрос вместо имени таблицы или имени столбца, так как SELECT всегда нам в качестве результата возвращает таблицу. Рубрика SQLite на сайте: http://zametkinapolyah.ru/zametki-o-mysql/sqlite/ Текстовая версия: http://zametkinapolyah.ru/zametki-o-mysql/ispolzovanie-podzaprosov-v-bazax-dannyx-sqlite-operator-exists-i-select.html Паблик блога в ВК: https://vk.com/zametkinapolyah Тематическая группа в ВК: https://vk.com/zametki_bd Помощь проекту: WMR: R288272666982 WMZ: Z293550531456 Яндекс.Деньги: 410011531129223
SQL script to insert into many to many table
 
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Text Article http://csharp-video-tutorials.blogspot.com/2017/02/sql-script-to-insert-into-many-to-many.html Slides http://csharp-video-tutorials.blogspot.com/2017/02/sql-script-to-insert-into-many-to-many_6.html SQL Server Interview Questions and Answers text articles & slides http://csharp-video-tutorials.blogspot.com/2014/05/sql-server-interview-questions-and.html SQL Server Interview Questions and Answers playlist https://www.youtube.com/playlist?list=PL6n9fhu94yhXcztdLO7i6mdyaegC8CJwR 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 insert data into a table that has many-to-many relationship Create table Students ( Id int primary key identity, StudentName nvarchar(50) ) Go Create table Courses ( Id int primary key identity, CourseName nvarchar(50) ) Go Create table StudentCourses ( StudentId int not null foreign key references Students(Id), CourseId int not null foreign key references Courses(Id) ) Go Students - Id column is identity column Courses - Id column is identity column StudentCourses - StudentId and CourseId columns are foreign keys referencing Id column in Students and Courses tables As you can see, StudentCourses is a bridge table that has many to many relationship with Students and Courses tables. This means a given student can be enrolled into many courses and a given course can have many students enrolled. Below is the question asked in an interview for SQL Server Developer role. Write a SQL script to insert data into StudentCourses table. Here are the rules that your script should follow. 1. There will be 2 inputs for the script Student Name - The name of the student who wants to enroll into a course Course Name - The name of the course the student wants to enroll into 2. If the student is already in the Students table, then use that existing Student Id. If the student is not already in the Students table, then a row for that student must be inserted into the Students table, and use that new student id. 3. Along the same lines, if the course is already in the Courses table, then use that existing Course Id. If the course is not already in the Courses table, then a row for that course must be inserted into the Courses table, and use that new course id. 4. There should be no duplicate student course enrollments, i.e a given student must not be enrolled in the same course twice. For example, Tom must not be enrolled in C# course twice. Answer : To avoid duplicate student course enrollments create a composite primary key on StudentId and CourseId columns in StudentCourses table. With this composite primary key in place, if someone tries to enroll the same student in the same course again we get violation of primary key constraint error. Alter table StudentCourses Add Constraint PK_StudentCourses Primary Key Clustered (CourseId, StudentId) Here is the SQL script that inserts data into the 3 tables as expected Declare @StudentName nvarchar(50) = 'Sam' Declare @CourseName nvarchar(50) = 'SQL Server' Declare @StudentId int Declare @CourseId int -- If the student already exists, use the existing student ID Select @StudentId = Id from Students where StudentName = @StudentName -- If the course already exists, use the existing course ID Select @CourseId = Id from Courses where CourseName = @CourseName -- If the student does not exist in the Students table If (@StudentId is null) Begin -- Insert the student Insert into Students values(@StudentName) -- Get the Id of the student Select @StudentId = SCOPE_IDENTITY() End -- If the course does not exist in the Courses table If (@CourseId is null) Begin -- Insert the course Insert into Courses values(@CourseName) -- Get the Id of the course Select @CourseId = SCOPE_IDENTITY() End -- Insert StudentId & CourseId in StudentCourses table Insert into StudentCourses values(@StudentId, @CourseId) If required, we can very easily convert this into a stored procedure as shown below. Create procedure spInsertIntoStudentCourses @StudentName nvarchar(50), @CourseName nvarchar(50) as Begin Declare @StudentId int Declare @CourseId int Select @StudentId = Id from Students where StudentName = @StudentName Select @CourseId = Id from Courses where CourseName = @CourseName If (@StudentId is null) Begin Insert into Students values(@StudentName) Select @StudentId = SCOPE_IDENTITY() End If (@CourseId is null) Begin Insert into Courses values(@CourseName) Select @CourseId = SCOPE_IDENTITY() End Insert into StudentCourses values(@StudentId, @CourseId) End Use the following statement to execute the stored procedure Execute spInsertIntoStudentCourses 'Tom','C#'
Views: 96945 kudvenkat
Oracle Operators in Oracle Database | Oracle Tutorial for Beginners
 
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Oracle Operators in Oracle Database | Oracle Tutorial for Beginners Oracle Operators BETWEEN AND . NOT BETWEEN AND IS NULL and IS NOT NULL LIKE Operator in Oracle NOT LIKE Operators in Oracle IN and NOT IN Oracle SQL Oracle tutorials for Beginners oracle query between two timestamps oracle between inclusive oracle sql between two dates with time oracle between exclusive sql between dates sql between datetime sql between inclusive or exclusive between clause in oracle for date oracle not in vs not exists oracle not exists in condition in oracle oracle sql not in subquery oracle not in null if not exists in oracle not equal to in oracle not like in oracle how to select null values in oracle oracle case is null oracle compare null values in where clause oracle sql not null or empty oracle is not null oracle case when not null then how to handle null in case statement in oracle is null in oracle not like in oracle with multiple values oracle not like wildcard oracle sql like multiple values if not in oracle pl sql sql query not like multiple values how to pass parameter in like operator in oracle regexp_like in oracle oracle not equal
Views: 463 Oracle PL/SQL World
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
Oracle Database Tutorial 8: The "IN" Operator In Sql
 
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he SQL IN Operator The IN operator allows you to specify multiple values in a WHERE clause. The IN operator is a shorthand for multiple OR conditions. IN Syntax SELECT column_name(s) FROM table_name WHERE column_name IN (value1, value2, ...); or: SELECT column_name(s) FROM table_name WHERE column_name IN (SELECT STATEMENT); not in operator in sql sql where multiple values @ symbol in sql sql where in list sql where multiple conditions sql between sql like
SQL create table in hindi | SQL tutorial in hindi | DBMS Lectures in hindi #72
 
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Welcome to series of gate lectures by well academy SQL create table in hindi | SQL tutorial in hindi | DBMS Lectures in hindi #72 Here are some more GATE lectures by well academy relational algebra in dbms | relational algebra operations in dbms | DBMS lectures in hindi #58 : https://youtu.be/zbnyudmh4ys Select Operation in Relation Algebra | Selection in Relational Algebra | DBMS lectures in hindi #59 : https://youtu.be/NsIL7z4Ck4A Projection in Relational Algebra | relational algebra in dbms | DBMS Lectures in hindi #60 : https://youtu.be/5QVMyeDfih4 Gate 2012 Relaional Algebra | relational algebra in dbms gate | DBMS lectures in hindi #61 : https://youtu.be/SeGqtlzy5_k Rename operation in Relational Algebra | relational algebra in dbms | DBMS Lectures in hindi #62 : https://youtu.be/0bklGoIBcQ8 set operations in dbms | Set Operations in Relational Algebra in dbms | DBMS lectures in hindi #63 : https://youtu.be/cE8mZnWxyN4 Join Operation in DBMS | join operation in relational algebra | join operation in database DBMS #64 : https://youtu.be/Au-ab_Yq1rw Natural join operation in dbms | Natural join in relational algebra | Natural join in hindi | #65 : https://youtu.be/rBaSaPoUeqQ Division Operation | Division Operation in DBMS | Division Operation in dbms with example | DBMS #66 : https://youtu.be/705ljW1X5gM join in dbms | Types of Join in dbms | join operation in relational algebra | DBMS lectures #67 : https://www.youtube.com/watch?v=4DppvRx5a2Y GATE 2015 Relational Algebra | relational algebra in dbms with examples | DBMS Lectures in hindi #68 : https://youtu.be/gj0xiXmjVaw Relational Calculus | relational calculus database | relational calculus in hindi | DBMS #69 : https://youtu.be/1hG_qqckYj0 Tuple Relational Calculus | tuple relational calculus in dbms | tuple relational calculus in hindi : https://youtu.be/RzGg0fykY3I Tuple Relational Calculus | Bounded Variables and Free Variables | DBMS Lectures in Hindi #71 : https://youtu.be/Yjz10ysczUc Click here to subscribe well Academy https://www.youtube.com/wellacademy1 GATE Lectures by Well Academy Facebook Group https://www.facebook.com/groups/1392049960910003/ Thank you for watching share with your friends Follow on : Facebook page : https://www.facebook.com/wellacademy/ Instagram page : https://instagram.com/well_academy Twitter : https://twitter.com/well_academy sql create, sql create table, sql create table in hindi, sql create user, sql creating database, sql cross joins with examples, SQL tutorial in hindi, create new table sql, create table command in sql, create table in oracle sql developer, create table in sql 2012, create table in sql cmd, create table in sql command line, create table in sql in hindi, create table in sql plus, create table in sql server 2008, create table in sql server 2012, create table in sql server 2014, create table query in sql, create table sql server 2016, how to create sql table, how to create table sql developer, microsoft sql create table, ms sql create table, mysql create table, mysql create table and import data from csv, mysql create table command line windows, mysql create table example, mysql create table foreign key, mysql create table in workbench, mysql create table php, mysql create table primary key, mysql create table query, mysql create table tutorial, oracle sql create table, psql create table, psql create table command line, psql create table example, psql create table terminal, sql 2014 create table, sql create table, sql create table access, sql create table and columns, sql create table and insert data, sql create table associative entity, sql create table c#, sql create table command line, sql create table date yyyy-mm-dd, sql create table deutsch, sql create table example, sql create table foreign key, sql create table from a view, sql create table from csv, sql create table from excel, sql create table from scratch, sql create table from select, sql create table from select query, sql create table if not exists, sql create table in hindi, sql create table many to many relationship, sql create table no database selected, sql create table pk fk, sql create table primary key, sql create table primary key autoincrement, sql create table relationships, sql create table statement, sql create table stored procedure, sql create table student, sql create table time, sql create table time format, sql create table tutorial, sql create table with date in name, sql create table with primary key, sql create table with query, sql create table youtube, sql server create table, sql tutorial - 1 create table statement, sql workbench create table,
Views: 12167 Well Academy
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
50. Subquery or Inner Query or Nested Query in PL/SQL Oracle
 
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In this video you will learn about Subquery or Inner Query or Nested Query in PL/SQL Oracle. For Support =========== Email: [email protected] Contact Form: http://www.learninhindi.com/home/contact Our Social Media ================ Facebook: https://www.facebook.com/LearnInHindi Twitter: https://twitter.com/LearnInHindi For Training & Videos ===================== For more videos and articles visit: http://www.learninhindi.com Free Java Programming In Hindi Course ===================================== https://www.youtube.com/playlist?list=PLOZ3jentlCDAwwhMyoLISrxkXTADGp7PH Free Oracle PL/SQL Programming In Hindi Course ============================================== https://www.youtube.com/playlist?list=PLB5DA82419C2D99B6 Free C Programming In Hindi Course ================================== https://www.youtube.com/playlist?list=PLOZ3jentlCDAxKpBLMWogxSdy6BZcsAJq Trips & Tricks Channel ====================== https://www.youtube.com/channel/UCGmLfkuCo-3lHHJXRJ9HUMw Programming in Hindi Channel ============================ https://www.youtube.com/channel/UCudElIDgwNrybeAvXIy1HZQ
Views: 7655 ITORIAN
Java- MySQL Connection (Create Table, Insert, Select)
 
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This is a fast tutorial, intended for people who understand java, and the basics of SQL/MySQL who just want to see how to use my-sql-connector. How to create a MySQL Connection in java, then create a table, insert, and select, video 1 of 4. CODE: import java.sql.Connection; import java.sql.DriverManager; public static Connection getConnection() throws Exception{ try{ String driver = "com.mysql.jdbc.Driver"; String url = "jdbc:mysql://24.196.52.166:3306/testdb"; String username = "username"; String password = "password"; Class.forName(driver); Connection conn = DriverManager.getConnection(url,username,password); System.out.println("Connected"); return conn; } catch(Exception e){System.out.println(e);} return null; } Download JDBC https://dev.mysql.com/downloads/connector/j/ --06/07/2107
Views: 306065 Steven Byrne
Connecting C# with Oracle 11g  use SQL  insert - select  Tutorial  2
 
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To Download Full project + code + file Library Oracle.ManagedDataAccess.dll https://www.4shared.com/rar/SGPri5qpfi/oracle_win_project.html thank you mohamed fayed egypt - Giza My Facebook : https://www.facebook.com/shams.ezzat.73
HOW TO RETURN MULTIPLE VALUES FROM A PROCEDURE IN ORACLE PL/SQL? (USING OUT PARAMETERS)
 
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This video tutorial explains how an oracle procedure can return multiple values with a proper example. The video tutorial shows how this problem can be tacked using simple and easy to understand out parameters!!!
Views: 15282 Kishan Mashru
PL/SQL Tutorial | Exception Handling in Oracle Database
 
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Learn exception handling in oracle, understanding different types of exceptions and trapping exception with SQLERRM and SQLCODE. How to handle exception in oracle database, How to handle user defined exception in oracle database, What is Pragma in Exception Handling, What is Pragma Exception_INIT in oracle, Difference between named and unnamed exception in oracle, Types of exception available in oracle, How to use Raise_application_error in oracle, How to use custom exception in oracle, Details of System Exception: DUP_VAL_ON_INDEX ORA-00001 You tried to execute an INSERT or UPDATE statement that has created a duplicate value in a field restricted by a unique index. TIMEOUT_ON_RESOURCE ORA-00051 You were waiting for a resource and you timed out. TRANSACTION_BACKED_OUT ORA-00061 The remote portion of a transaction has rolled back. INVALID_CURSOR ORA-01001 You tried to reference a cursor that does not yet exist. This may have happened because you've executed a FETCH cursor or CLOSE cursor before OPENing the cursor. NOT_LOGGED_ON ORA-01012 You tried to execute a call to Oracle before logging in. LOGIN_DENIED ORA-01017 You tried to log into Oracle with an invalid username/password combination. NO_DATA_FOUND ORA-01403 You tried one of the following: You executed a SELECT INTO statement and no rows were returned. You referenced an uninitialized row in a table. You read past the end of file with the UTL_FILE package. TOO_MANY_ROWS ORA-01422 You tried to execute a SELECT INTO statement and more than one row was returned. ZERO_DIVIDE ORA-01476 You tried to divide a number by zero. INVALID_NUMBER ORA-01722 You tried to execute a SQL statement that tried to convert a string to a number, but it was unsuccessful. STORAGE_ERROR ORA-06500 You ran out of memory or memory was corrupted. PROGRAM_ERROR ORA-06501 This is a generic "Contact Oracle support" message because an internal problem was encountered. VALUE_ERROR ORA-06502 You tried to perform an operation and there was a error on a conversion, truncation, or invalid constraining of numeric or character data. CURSOR_ALREADY_OPEN ORA-06511 You tried to open a cursor that is already open. Linkedin: https://www.linkedin.com/in/aditya-kumar-roy-b3673368/ Facebook: https://www.facebook.com/SpecializeAutomation/
Views: 1269 Specialize Automation
Урок 3 : Выборка данных SELECT и DDL объект ALTER - MS SQL
 
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1. SELECT , DISTINCT 2. FROM , WHERE (IN , NOT IN , LIKE , NOT LIKE , EXISTS , NOT EXISTS ) 3. DECLARE 4. ALTER TABLE
Views: 417 FoxLip News
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: 91793 sentdex
8. SQL for Beginners - Subquery (Hindi)
 
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In this video, you will learn what is subquery? what is it's need? how to deal with the situations using subquery?
Views: 8032 Ishwar Academy