MSSQL Constraints 39 codes

1 A statement that creates a table with two column-level check constraints

2 A unique constraint

3 Add a default value of 0 if no value specified

4 Add a nullable column

5 Add a primary key to a table

6 Add check constaint to only allow positive value

7 Add constraints for two columns

8 Add Default value constraint

9 Add Unique constaint to table creation

10 Adding a Foreign Key to an Existing Table

11 Adding a UNIQUE Constraint to an Existing Table

12 Blocking Empty and Missing Character Input

13 Changing a Column Definition

14 Check constraints coded at the table level

15 CHECK Constraints for current date

16 Check the value range

17 Combine two columns as the primary key

18 Constraint

19 Constraint check (Options)

20 Create Rules

21 Creating a Primary Key on an Existing Table

22 Data length

23 Define Primary key and foreign key

24 Define Primary key in table creation command

25 DELETE CASCADE and UPDATE CASCADE

26 Enable a column to optionally not require a value by designating it as a nullable column

27 How to use foreign key constraints

28 Maintenance of the referential constraint

29 Mark constraint with nocheck when creating a constraint

30 Not Allowing Null Values in a Column

31 NOT NULL column and NULL column

32 Sample Code for Disabling a Constraint

33 Set default value for column

34 Specification of the primary key of the employee table as a column-level constraint

35 Table-level constraints

36 The syntax of a check constraint

37 Two constraints for one single column

38 UniqueIdentifier are either explicitly provided or they are generated by the NEWID() system function

39 WITH CHECK OPTION says any INSERT or UPDATE statements must meet that where clause criteria