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 vote169 views1 answer
Mysql two joins
SQL
0 vote175 views1 answer
Mysql change timestamp on update
SQL
1 vote232 views2 answers
Mysql SELECT
SQL
0 vote178 views1 answer
Less than date query sqlachemy
SQL
0 vote162 views1 answer
Make a socket server to detect changes in mysql
SQL
3 votes162 views2 answers
Oracle synonym
SQL
3 votes158 views2 answers
Postgres download
SQL
5 votes181 views3 answers
Day of week postgresql
SQL
1 vote368 views1 answer
Foreign key in oracle sql developer
SQL
0 vote165 views1 answer
Oracle drop default value
SQL