constraint sql

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Nico
15 Nov 2018
1USE AdventureWorks2012;  
2GO  
3ALTER TABLE dbo.DocExe   
4DROP CONSTRAINT FK_Column_B;   
5GO  
6
source
Mona
04 Jun 2016
1create table etc(
2  numeric (4) anything constraint Gives_name_to_a_restriction primary key);
Arianna
19 Nov 2017
1It creates a new constraint on an existing table, which is used to specify
2rules for any data in the table.
3Example: Adds a new PRIMARY KEY constraint named ‘user’ on columns
4ID and SURNAME.
5ALTER TABLE users
6ADD CONSTRAINT user PRIMARY KEY (ID, SURNAME);
Mads
28 Nov 2017
1print("hello world");
2alert(print);
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