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How to Join two tables in a update statement
 
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This video is to understand how we can update a column of a table, based on the data present on the other table, and both the tables having a common column. Its a complicated update statement that can be used to update with different conditions.
Views: 7746 Kishan Mashru
ORACLE 11g: Joining of multiple tables in oracle sql | 3i Template IT Solutions
 
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ORACLE 11g: Joining of multiple tables in oracle sql | 3i Template IT Solutions https://youtu.be/oNTm9ZaAwXI how to join multiple tables in oracle 11g joining multiple tables in oracle joining multiple tables in oracle sql joining two tables in oracle joining three tables in oracle joining two tables in oracle sql joining two tables in oracle 11g join three tables in oracle with example join two tables in oracle example join three tables in oracle 11g joining multiple tables in oracle example join between two tables in oracle join between three tables in oracle join two tables in update command oracle how to join two tables in oracle database join two tables in different databases oracle join two tables oracle sql developer left outer join on multiple tables in oracle+example how to join two tables in oracle forms joining two huge tables in oracle how to join multiple tables in oracle how to join multiple tables in oracle sql how to join multiple tables in oracle example how join two tables in oracle inner join multiple tables in oracle inner join two tables in oracle left join multiple tables in oracle join on multiple tables in oracle outer join multiple tables in oracle joining of two tables in oracle joining of three tables in oracle left outer join multiple tables in oracle outer join two tables in oracle oracle join multiple tables performance query to join multiple tables in oracle how to join two tables in oracle reports joining more than two tables in oracle sql inner join multiple tables oracle sql combine two tables oracle sql oracle join multiple tables syntax to join two tables in oracle join two tables in update oracle join two unrelated tables in oracle join with multiple tables in oracle how to join two tables in oracle without common column Please Subscribe: https://www.youtube.com/channel/UC6tweEO2qzGGWXHGFXfe1Ow Facebook: https://www.facebook.com/3iTemplateItSolutions ORACLE 11g: Joining of multiple tables in oracle sql | 3i Template IT Solutions https://youtu.be/oNTm9ZaAwXI
Views: 1027 3i Tutorials For All
Merge Statement in Oracle SQL with Example (UPDATE/DELETE or INSERT)
 
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This video demonstrates how to write a Merge Statement in oracle sql, how it is useful in doing a conditional update or delete or both of them when the condition between the target table and source table is evaluated to true, and how we can insert the record into the target table when condition is evaluated to false. The video also shows the use of UPDATE, DELETE and INSERT with Merge, and also the various possible ways to use a Merge statement!!!
Views: 7547 Kishan Mashru
How to insert records in multiple tables at same time
 
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How to insert records in multiple table at same time step by step, In this video i'm discus two methods for inserting records in multiple table at same time. #insert #ocptechnology #oracle12c
Views: 40306 OCP Technology
Update Multiple Table by View
 
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Microsoft SQL Server Update Multiple Table by View
Views: 3945 Joydeep Das
Update Table with inner join in SQL server
 
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Update Table with inner join in SQL server sql server SQL server tutorial SQL server beginner tutorial SQL server tutorial 2016 SQL server interview SQL server interview question SQL server tutorial beginner to advance sql server 2016 tutorial for beginners sql server 2016 sql server interview questions and answer sql tutorial sql tutorial for beginners sql queries tutorial sql server management studio 2016 interview question in sql server
Views: 1982 sadiq msi
Oracle Database | Bangla Tutorials 14  :: Displaying Data From Multiple Tables (Table Joining))
 
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www.facebook.com/oracle.shohag Email : [email protected] Website : www.oraclebangla.com Topics : Displaying Data From Multiple Tables
Views: 2143 Oracle Bangla
SQL: using JOIN in UPDATE Query
 
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This video demonstrates how we can join tables for updating a record in a table. Above example shows how to write an update query to set products of category mobile from a particular supplier ABC not to be sold.
Views: 11450 Gautam Mokal
22. Insert multiple records in one or more tables at once in PL/SQL Oracle
 
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In this video you will learn about Insert multiple records in one or more tables at once 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: 8986 ITORIAN
join two table in oracle form builder
 
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how to make a emp_incentive table in oracle form builder
How to join or relation between two table in Oracle SQL
 
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How to join or relation between two table in Oracle SQL
Views: 938 Tanmun
Oracle SQL Tutorial 18 - How to Create Foreign Keys
 
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In this video we are going to be creating foreign keys. I highly recommend watching the previous video before you watch this one. Essentially, we are creating a very simple database for a system where we can create projects and add people to those projects. We started with the users table: --Delete the table if needed: --DROP TABLE users; CREATE TABLE users( user_id NUMBER, username VARCHAR2(50 CHAR) UNIQUE, CONSTRAINT users_pk PRIMARY KEY (user_id) ); Now we are going to create a table for projects with a column that is a foreign key to the username. We're going to want to make this match data types: CREATE TABLE projects( project_id NUMBER, project_name VARCHAR2(50 CHAR) UNIQUE, creator VARCHAR2(50 CHAR) ) Next, we need to add the column attributes we decided on last video: CREATE TABLE projects( project_id NUMBER, project_name VARCHAR2(50 CHAR) UNIQUE, creator VARCHAR2(50 CHAR) NOT NULL ) NOT NULL because we want every project to have a creator, but we are not labeling UNIQUE because that means we could only have a specific username once in the table. We want to allow a user to create multiple projects. We also need to add a primary key: CREATE TABLE projects( project_id NUMBER, project_name VARCHAR2(50 CHAR) UNIQUE, creator VARCHAR2(50 CHAR) NOT NULL, CONSTRAINT projects_pk PRIMARY KEY (username) ) Now, the question that remains is, how can I tell Oracle that I want the username to reference the username column of the other table? We have to make a foreign key constraint. As you've learned from the previous videos, there are about three ways to create constraints. You can do it inline at the column level, unnamed. You can do it at the column level, named, and you can do it at the Table level, named. Usually the table-level is preferred, but I will quickly remind you how to do all three again. CREATE TABLE projects( project_id NUMBER, project_name VARCHAR2(50 CHAR) UNIQUE, creator VARCHAR2(50 CHAR) NOT NULL REFERENCES users (username), CONSTRAINT projects_pk PRIMARY KEY (project_id) ) This works, but if we want to name it, we should do this: CREATE TABLE projects( project_id NUMBER, project_name VARCHAR2(50 CHAR) UNIQUE, creator VARCHAR2(50 CHAR) NOT NULL CONSTRAINT projects_users_fk REFERENCES users (username), CONSTRAINT projects_pk PRIMARY KEY (project_id) ) This works, but the preferred method is to do it at the table level: CREATE TABLE projects( project_id NUMBER, project_name VARCHAR2(50 CHAR) UNIQUE, creator VARCHAR2(50 CHAR) NOT NULL, CONSTRAINT projects_pk PRIMARY KEY (project_id), CONSTRAINT projects_users_fk FOREIGN KEY (creator) REFERENCES users (username) ) Great! So you've learned how to create a foreign key, now we can see it inside of Oracle SQL Developer. One important thing when it comes to foreign keys is what happens when have data in your database and you try to delete the parent row that a row in the child table references? In the next video we are going to configure that using ON DELETE. See you all then and if you enjoy this series, please do me a huge favor by liking the video and subscribing to my YouTube 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: 18752 Caleb Curry
How To Insert Data Into Multiple Table Using Foreign Key
 
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Normally we create table and insert data into the table.But,Here we learn about how to insert data into multiple table. Normally,For inserting data into multiple table using foreign key but without using foreign key we can also insert data into multiple table.
Views: 79164 J&T Channel
SQL Server Update with joining two or more table | SQL Server | Jangli Coder
 
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SQL Server Update With Joining Two or More Table, SQL Server Update Query, Update Query with join, join in update query, inner join, left join, full join, Facebook Page :- https://goo.gl/fuhjF1 Youtube :- https://goo.gl/UqixKZ blogspot :- https://goo.gl/3Q7VCw Please Like, Comment and Subscribe Our Channel
Views: 509 Jangli Coder
build master details with Oracle Forms
 
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To build a master details Form (with query, insert, update, delete) from two tables, I couldn't find a faster and easier way than Oracle Forms. Not in java nor in other GUI language or tools even by using wizards. watch and if you do not think so please record a video named with: "build master-details with langOrToolName" to ease finding it and share it on youtube. لم استطع ايجاد طريقة أبسط أو أسرع في بناء واجهة أو نموذج لتطبيق يضم جدولين مرتبطين بصيغة master-details من اوراكل فورمز. حتى ادوات جافا لاوراكل أو أية برامج أو أدوات أخرى للبرمجة المرئية لم تقدم نفس البساطة والسهولة، أو على الأقل حسب علمي. شاهد هذا الفيديو وإذا كنت تعتقد بإمكانية تنفيذ ذلك بشكل أبسط وأسهل بأدوات تطوير أخرى، فأرجو تسجيل فيديو وتسميته باسم "build master-details with langOrToolName" لتسهيل البحث عنه، ثم مشاركته على اليوتيوب.
Views: 8467 Samer T
add primary key and foreign key to join two table in oracle database
 
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add primary key and foreign key to join two table in oracle database
JOIN TWO TABLES WITHOUT COMMON COLUMN
 
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Join Two tables without any common column between them
Views: 3236 Techie Savy
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: 73631 kudvenkat
How update multiple values of column with a single UPDATE statement in ms sql server
 
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Is there a way to update multiple columns in SQL server, I would like to update multiple columns in a table based on values,update multiple columns with a single UPDATE statement More @ http://goo.gl/VLYo0Q
Views: 21780 Ajmath Shaik
13 02  Multiple Table UPDATE
 
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MYSQL 5 DEVELOPMENT
Views: 904 Miszkoxxx
Oracle SQL PLSQL 12C Tutorial 14 - UPDATE Statement
 
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This Video Tutorial Will Describe how to update a row or update column or update particular value which is already inserted into the table in oracle 12C version. This command will also work on other versions of database like Oracle 11g Database, Oracle 10g Database, Oracle 9i Database, Oracle 8i Database, Oracle 8 Database and so on. This command is used to update or modify the inserted data into the table. You can update single column, single row, multiple columns or multiple rows with this command. Full Syntax will be given in this video tutorial about how to update data in oracle database table. Along with the live example to update rows or columns from the table. All the keywords, format, mandatory clauses etc are described in this video.
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: 234648 The Bad Tutorials
SQL Inner Join Multiple Tables with SUM Tutorial - SQL 2008/2012/2016/2017
 
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Use inner joins with multiple tables to create reports. Uses aliases, and the SUM aggregate function to demonstrate the flexibility of the join statement. Get the SQL script to create the database and run the exercies in the video here: https://www.qewbi.com/sql/scripts/qewbijoins.zip
Views: 130072 Edward Kench
Update Table Using Join In SQL Server
 
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Update Table Using Join In SQL Server
Views: 294 Shamim Uddin
How to Join 3 tables in 1 SQL query
 
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Get your first month on the Joes 2 Pros Academy for just $1 with code YOUTUBE1. Visit http://www.joes2pros.com Offer expires July 1, 2015 From the newly released 2 Disc DVD set (SQL Queries Joes 2 Pros Vol2) this video shows how to join 3 tables in 1 query.
Views: 244417 Joes2Pros SQL Trainings
MULTI TABLE UPDATE ORACLE FORM BUILDER IN ARABIC
 
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MULTIBLE TABLE UPDATE create table emp10(emp_id number primary key, emp_name varchar2(20), emp_salary number); create table bonus( emp_id number references emp10(emp_id), bonus number); --------------------------------- declare bonus number; begin if :emp_salary علامه اكبر من] 1000 ] then bonus:=:emp_salary * 0.25 ; else bonus:=:emp_salary * 0.5; end if; insert into emp10 values (:emp_id,:EMP_NAME,:EMP_SALARY); INSERT INTO BONUS VALUES(:EMP_ID,bonus); end; commit;
Views: 94 HAMED AL-SAWAFI
Joining two tables two different databases
 
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How to Join Two tables with two different database in sql server?
Views: 8655 Suresh Molabanti
How To Insert,update,delete,join Data into a Table Using SQL Developer tool
 
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How To Insert,update,delete,join Data into a Table Using SQL Developer tool In this topic, you learn to add objects to the Query Builder interface and then create a query based on those objects. In this section, you create a query based on the EMPLOYEES and DEPARTMENTS tables. You will generate output that shows per department name, the employees who work in that department. Perform the following steps to add the EMPLOYEES table to the Query Builder. 1 . Select the Query Builder tab to open Query Builder window. 2 . Drag and drop the EMPLOYEES table from the Connections navigator to the Query Builder window. 3 . Drag and drop the DEPARTMENTS table object over to the Query Builder window, so that the two table objects are displayed in the Query Builder window. Because there are two relationships defined between the EMPLOYEES and DEPARTMENTS tables, you see two lines between the tables identifying the columns that are linked together through foreign key constraints. The two relationships are defined as: The MANAGER_ID in the DEPARTMENTS table must be a value of the EMPLOYEE_ID in the EMPLOYEES table (managers must exist as employees). The DEPARTMENT_ID in the EMPLOYEES table must be a value of the DEPARTMENT_ID in the DEPARTMENTS table (an employee's department must exist in the DEPARTMENTS table, or be null). 4 . Next, you select the columns that you want to see in the report. In the EMPLOYEES table, check the FIRST_NAME, LAST_NAME, JOB_ID, SALARY, and DEPARTMENT_ID columns. As you select these columns, note that they are added in the order that you select them into the window below the table objects. In the DEPARTMENTS table, check the DEPARTMENT_NAME column. 5 . Click Run .
Views: 1497 Narayan Mehta
Part 69   Merge in SQL Server
 
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Text version of the video http://csharp-video-tutorials.blogspot.com/2014/09/part-69-merge-in-sql-server.html Slides http://csharp-video-tutorials.blogspot.com/2014/09/part-69-merge-in-sql-server_30.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 What is the use of MERGE statement in SQL Server Merge statement introduced in SQL Server 2008 allows us to perform Inserts, Updates and Deletes in one statement. This means we no longer have to use multiple statements for performing Insert, Update and Delete. With merge statement we require 2 tables 1. Source Table - Contains the changes that needs to be applied to the target table 2. Target Table - The table that require changes (Inserts, Updates and Deletes) The merge statement joins the target table to the source table by using a common column in both the tables. Based on how the rows match up as a result of the join, we can then perform insert, update, and delete on the target table. Merge statement syntax MERGE [TARGET] AS T USING [SOURCE] AS S ON [JOIN_CONDITIONS] WHEN MATCHED THEN [UPDATE STATEMENT] WHEN NOT MATCHED BY TARGET THEN [INSERT STATEMENT] WHEN NOT MATCHED BY SOURCE THEN [DELETE STATEMENT] Example 1 : In the example below, INSERT, UPDATE and DELETE are all performed in one statement 1. When matching rows are found, StudentTarget table is UPDATED (i.e WHEN MATCHED) 2. When the rows are present in StudentSource table but not in StudentTarget table those rows are INSERTED into StudentTarget table (i.e WHEN NOT MATCHED BY TARGET) 3. When the rows are present in StudentTarget table but not in StudentSource table those rows are DELETED from StudentTarget table (i.e WHEN NOT MATCHED BY SOURCE) Create table StudentSource ( ID int primary key, Name nvarchar(20) ) GO Insert into StudentSource values (1, 'Mike') Insert into StudentSource values (2, 'Sara') GO Create table StudentTarget ( ID int primary key, Name nvarchar(20) ) GO Insert into StudentTarget values (1, 'Mike M') Insert into StudentTarget values (3, 'John') GO MERGE INTO StudentTarget AS T USING StudentSource AS S ON T.ID = S.ID WHEN MATCHED THEN UPDATE SET T.NAME = S.NAME WHEN NOT MATCHED BY TARGET THEN INSERT (ID, NAME) VALUES(S.ID, S.NAME) WHEN NOT MATCHED BY SOURCE THEN DELETE; Please Note : Merge statement should end with a semicolon, otherwise you would get an error stating - A MERGE statement must be terminated by a semi-colon (;) In real time we mostly perform INSERTS and UPDATES. The rows that are present in target table but not in source table are usually not deleted from the target table. Example 2 : In the example below, only INSERT and UPDATE is performed. We are not deleting the rows that are present in the target table but not in the source table. Truncate table StudentSource Truncate table StudentTarget GO Insert into StudentSource values (1, 'Mike') Insert into StudentSource values (2, 'Sara') GO Insert into StudentTarget values (1, 'Mike M') Insert into StudentTarget values (3, 'John') GO MERGE INTO StudentTarget AS T USING StudentSource AS S ON T.ID = S.ID WHEN MATCHED THEN UPDATE SET T.NAME = S.NAME WHEN NOT MATCHED BY TARGET THEN INSERT (ID, NAME) VALUES(S.ID, S.NAME);
Views: 95678 kudvenkat
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: 108886 kudvenkat
Oracle SQL Tutorial 19 - ON DELETE (SET NULL and CASCADE)
 
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Welcome everyone! Something you need to consider when you are creating foreign keys is what happens if you delete the parent? As a reminder, the parent is the row that has the value you are referencing in the row that has a foreign key. Why is this something important to consider? It's important because foreign keys need to protect us from two primary things, unacceptable INSERT statements, and unacceptable DELETE statements. Let's see what happens when we try to insert incorrect data into the table with the foreign key: INSERT INTO projects VALUES (1, 'Update website homepage', 'CalebCurry') The response tells us plainly that there is no such user in the users table. So this works correctly. Deleting data on the other hand works a bit differently because the database does not know what you want to do with the child row when you delete the parent from the parent table. By default, we will get an error message that prevents the parent from being deleted, but there are some other options. How do we configure this? This is where the ON DELETE statement comes in. We add the keywords ON DELETE right after the foreign key and then we can give it the option of CASCADE or SET NULL. CASCADE means that if we delete the parent, we are also going to delete the child. In our situation what that means is that if somebody creates a project in our project table and then that persons account gets deleted, all of the projects he owns will also be deleted. CASCADE: CREATE TABLE projects( project_id NUMBER, Project_name VARCHAR2(50 CHAR) UNIQUE, creator VARCHAR2(50 CHAR) NOT NULL, CONSTRAINT projects_pk PRIMARY KEY (project_id), CONSTRAINT projects_users_fk FOREIGN KEY (creator) REFERENCES users (username) ON DELETE CASCADE ) SET NULL will take the value in the child table and get rid of it. What you are left with is NULL. This means that we have an orphaned child. The first thought you might have is that it is a bad thing to have an orphaned child, but in databases that is not always so. In our application if we had it set to SET NULL, when a user account gets deleted the projects would remain in existence they would just lack a creator. This might be a good thing if you are concerned about the long term survival of a project, this might be the route you want to go. It ultimately depends on the application purpose. If you don't like CASCADE or SET NULL, you can leave the entire ON DELETE statement and just have Oracle throw an error when a parent is deleted. As for us, we are going to use ON DELETE CASCADE. We need to use this with extreme caution. If you are not careful, someday you will run a delete a row and that will cascade through you database deleting a bunch of stuff you didn't want to delete. Stuff happens, so make sure you back up your database every once in eternity. Now, in the last video we started with a database design that had three tables. We've only created two in this video. In the next video we are going to create the next one, which is a little special. Then we'll finish things up by adding some indexes. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Support me on Patreon! 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: 13156 Caleb Curry
updating a table  in dbms | dbms interview questions and answers
 
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Update TableName set Column1='ColumnValue1'. Update query is used to change the previous record in the table. updating a table in sql server 2008,updating a table from another table in oracle,update table syntax in sql server,sql update select,sql update from another table,sql update join,sql update multiple rows,update query in mysql,update 2 tables in one query sql,update 2 tables in one query sql server,update multiple tables in single query sql,update two tables in single query in sql,update two tables in single query in sql server 2008,how to write update query in sql using stored procedure,update table syntax in sql server For more details visit: http://www.wikitechy.com/ Facebook: https://www.facebook.com/wikitechy Twitter: https://twitter.com/WikitechyCom Google Plus: https://plus.google.com/u/0/b/108939953321929485284/108939953321929485284/posts Linked in : https://www.linkedin.com/company/wikitechy Pinterest: https://www.pinterest.com/wikitechy/ Tumblr: http://wikitechy.tumblr.com/
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: 312695 kudvenkat
Visual Basic Inner Join Tables
 
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http://www.jdsitecare.com In this video i will show you guys how to retrieve data from 2 tables and have them display in 1 data gridview. This is done using the INNER JOIN query in SQL and i will show you how to write it. You will also see how to implement it into your application as well as you will see how it works and what's being done. Download Project: http://jdsitecare.com/1060/vb-inner-join-app/
Views: 51415 Networking26
C# - WPF - Insert Update Delete and View Data from Oracle Database Part 1/2 [with Source Code]
 
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Download link: https://goo.gl/Axoeja part 2/2 : https://youtu.be/NiGsgctfiYM C# - Oracle - How To Connect C# with Oracle Using ODAC - ODP.NET: https://youtu.be/cP6UatAZ76s
Views: 16774 Safaa Al-Hayali
Alias Names  In Oracle | Oracle Tutorials for Beginners
 
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Alias Names In Oracle | Oracle Tutorials for Beginners Column Level Alias Names in Oracle Table Level Alias names in Oracle Oracle Tutorials for Beginners Oracle pl/sql Tutorials for Beginners Oracle Tutorials for Beginners Oracle Tutorials for Beginners Oracle Tutorials for Beginners Oracle Tutorials for Beginners PlayList Oracle Tutorials for Beginners Playlist Oracle Tutorials for Beginners oracle alias column name with space oracle sql column alias in where clause oracle sql alias subquery oracle join alias oracle database alias alias sql sql alias join oracle as keyword sql query column name with space how to find space in a column in oracle select column name with space in teradata sql column name with space in where clause oracle sql alias subquery teradata column alias with space oracle column names with special characters oracle sql column alias with spaces sql alias join sql alias without as sql alias in where clause changing column names in sql query results how to join two tables with alias sql server alias aliases are very handy when table names are long sql as
Views: 438 Oracle PL/SQL World
SQL Server - Retrieve Multiple Rows as a Single Record
 
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A short T-SQL tutorial to show how to join two tables for selecting mutiple rows on a single record. The contents of this video applies to Microsoft® SQL Server®
Views: 15039 Emiliano Musso
Combine Tables from Multiple Sheets in the Same Workbook with Power Query
 
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Check out my Blog: http://exceltraining101.blogspot.com This video shows how to combine tables from different tabs in the same file using the Append capability in the Excel with Power Query. P.S. Feel free to provide a comment or share it with a friend! #exceltips #exceltipsandtricks #exceltutorial #doughexcel
Views: 157618 Doug H
Simple SQL statements Create,insert into, delete ,update table myslq command line
 
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Perform some basic data manipulation statements with mysql database, Show databases; create database create table describe table insert into Select delete update
Views: 74453 ITStart2000
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: 179575 kudvenkat
Oracle SQL: How To Modify Data With The Update Statement by AskTheOracle.net
 
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How to modify data in your Oracle database by using the SQL UPDATE statement. For more Oracle tutorials go to http://www.asktheoracle.net
Views: 2667 asktheoracle1
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: 11289 Kishan Mashru
sida la isugu xiro two tables in sql server
 
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how to join two tables in SQL server insert,new,update, and delete
20 - Oracle forms 11g |ON-DELETE |ON-UPDATE |اوراكل فورمز
 
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Oracle forms on-delete trigger Oracle forms on-update trigger اهلا بكم فى درس جديد من دروس أوراكل فورمز فى درس اليوم مثال عملى على تريجر on-delete وتريقر On-update وذلك من خلال عملية مراقبة –auditing – لعمليات الحذف و التعديل التى يقوم بها المستخدم بانشاء جدول – auditing table - history table وعمل تريجر on-delete ,on-update ونستخدم ايضا delete_record; ,update_record; ......................................­.................... لو عندك اى سؤال خش على الجروب : https://www.facebook.com/groups/oracle.askgad ......................................­.................... لمتابعة كل ماهو جديد من خلال صفحتنا https://www.facebook.com/askgad
Views: 1487 Ask Gad
Learn Oracle | How to Use Joins, Cross Join, Cartesian Product in SQL
 
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Pebbles present, Learn Oracle 10g with Step By Step Video Tutorials. Learn Oracle 10g Tutorial series contains the following videos : Learn Oracle - History of Oracle Learn Oracle - What is Oracle - Why do we need Oracle Learn Oracle - What is a Database Learn Oracle - What is Grid Computing Learn Oracle - What is Normalization Learn Oracle - What is ORDBMS Learn Oracle - What is RDBMS Learn Oracle - Alias Names, Concatenation, Distinct Keyword Learn Oracle - Controlling and Managing User Access (Data Control Language) Learn Oracle - Introduction to SQL Learn Oracle - Oracle 10g New Data Types Learn Oracle - How to Alter a Table using SQL Learn Oracle - How to Create a Package in PL SQL Learn Oracle - How to Create a Report in SQL Plus Learn Oracle - How to Create a Table using SQL - Not Null, Unique Key, Primary Key Learn Oracle - How to Create a Table using SQL Learn Oracle - How to Create a Trigger in PL SQL Learn Oracle - How to Delete Data from a Table using SQL Learn Oracle - How to Drop and Truncate a Table using SQL Learn Oracle - How to Insert Data in a Table using SQL Learn Oracle - How to open ISQL Plus for the first time Learn Oracle - How to Open SQL Plus for the First Time Learn Oracle - How to Update a Table using SQL Learn Oracle - How to use Aggregate Functions in SQL Learn Oracle - How to use Functions in PL SQL Learn Oracle - How to use Group By, Having Clause in SQL Learn Oracle - How to Use Joins, Cross Join, Cartesian Product in SQL Learn Oracle - How to use Outer Joins (Left, Right, Full) in SQL Learn Oracle - How to use the Character Functions, Date Functions in SQL Learn Oracle - How to use the Merge Statement in SQL Learn Oracle - How to use the ORDER BY Clause with the Select Statement Learn Oracle - How to use the SELECT Statement Learn Oracle - How to use the Transactional Control Statements in SQL Learn Oracle - How to use PL SQL Learn Oracle - Data Types in PL SQL Learn Oracle - Exception Handling in PL SQL Learn Oracle - PL SQL Conditional Logics Learn Oracle - PL SQL Cursor Types - Explicit Cursor, Implicit Cursor Learn Oracle - PL SQL Loops Learn Oracle - Procedure Creation in PL SQL Learn Oracle - Select Statement with WHERE Cause Learn Oracle - SQL Operators and their Precedence Learn Oracle - Using Case Function, Decode Function in SQL Learn Oracle - Using Logical Operators in the WHERE Clause of the Select Statement Learn Oracle - Using Rollup Function, Cube Function Learn Oracle - Using Set Operators in SQL Learn Oracle - What are the Different SQL Data Types Learn Oracle - What are the different types of Databases Visit Pebbles Official Website - http://www.pebbles.in Subscribe to our Channel – https://www.youtube.com/channel/UCNNjWVsQqaMYccY044vtHJw?sub_confirmation=1 Engage with us on Facebook at https://www.facebook.com/PebblesChennai Please Like, Share, Comment & Subscribe
Views: 3645 Pebbles Tutorials
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: 49987 Telusko

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