Check constraint in ms sql

Check constraint in sql

CREATE TABLE Persons (
    ID int NOT NULL,
    LastName varchar(255) NOT NULL,
    FirstName varchar(255),
    Age int,
    City varchar(255),
    CONSTRAINT CHK_Person CHECK (Age>=18 AND City='Sandnes')
);

Check constraint in sql

#For one column
CREATE TABLE Persons (
    ID int NOT NULL,
    LastName varchar(255) NOT NULL,
    FirstName varchar(255),
    Age int CHECK (Age>=18)
);

Check constraint in sql

#Add Check
ALTER TABLE Persons
ADD CONSTRAINT CHK_PersonAge CHECK (Age>=18 AND City='Sandnes');

#Drop Check 
ALTER TABLE Persons
DROP CHECK CHK_PersonAge;

Check constraint in ms sql

/*Adding Check constraint in sql server*/
ALTER TABLE (Table_Name)
ADD CONSTRAINT (Constraint_Name) CHECK (Boolean_Expression)

Similar codes

0 vote182 views1 answer
Sql get guid
SQL
0 vote181 views1 answer
Psql datestyle
SQL
2 votes182 views2 answers
How to get the date diff of 2 dates in the same fieldin sql server
SQL
1 vote175 views2 answers
Pad zero sql server
SQL
0 vote166 views1 answer
How to convert DateTime to VarChar SQL
SQL
0 vote180 views1 answer
Mysql server not running
SQL
0 vote159 views1 answer
Clear query cache sql server
SQL
4 votes171 views1 answer
Sql delete where in select
SQL
0 vote174 views1 answer
Write sql query to show the details start from digit
SQL
53 votes563 views6 answers
How to install mysql ubuntu
SQL