Chapter16 - Check Constraint in SQL Server | Coding Era
1. How to add a check constraint in SQL Server
2. The purpose or use of check constraint
SQL Server CHECK Constraint
CHECK Constraint is used to check the value before entering into record/table. You can say
that check constraint is use to limit the value that is going to insert into table. So it is use to
validate data before insertion.
You can define check constraint on one column as well as multiple columns.
You can apply at the time of table creation or after that.
Create Check Constraint at the time of table creation on single column
Create Check Constraint at the time of table creation on multiple column
Create Check constraint through alter table
Drop Check constraint
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