Sql check

Sql constraint check value in list

ALTER TABLE <table>
ADD CONSTRAINT chk_val CHECK (col in ('yes','no','maybe'))

Source: stackoverflow.com

Sql constraint check value in list

CREATE TABLE test(
    _id BIGINT PRIMARY KEY NOT NULL,
    decision NVARCHAR(5),
    CHECK (decision in ('yes','no','maybe'))
);

Source: stackoverflow.com

Sql query checker

CREATE TABLE employee

   ( employee_id VARCHAR(20),

    Name VARCHAR (20),

    Address VARCHAR (20),

    Mobile_no  SMALLINT);

Sql check

Adds a constraint that limits the value which can be added to a column.
Example 1 (MySQL): Makes sure any users added to the users table are 18
or over.
CREATE TABLE users (
first_name varchar(255),
age int,
CHECK (age>=18)
);
Example 2 (MySQL): Adds a check after the table has already been
created.
ALTER TABLE users
ADD CHECK (age>=18);

-1

Similar codes

0 vote335 views1 answer
Sql get latest of 2 datetimes
SQL
0 vote300 views1 answer
Select last 2 characters sql
SQL
1 vote320 views2 answers
Postgres copy table from one schema to another
SQL
7 votes337 views2 answers
Where keyword sql
SQL
0 vote328 views1 answer
Closure in sql
SQL
1 vote305 views1 answer
Mysql connect command
SQL
0 vote311 views1 answer
Update sqlaclehmy sqlalchemy.orm.evaluator.UnevaluatableError: Cannot evaluate BinaryExpression with operator <function like_op at 0x03CF1DF0>
SQL
8 votes330 views10 answers
Sql
SQL
0 vote286 views1 answer
Check sql query executed wp
SQL
1 vote302 views1 answer
Add constraint sql
SQL