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 vote105 views1 answer
Name '_mysql' is not defined
SQL
40 votes188 views4 answers
PostgreSQL add column
SQL
0 vote130 views1 answer
WHERE not regex in SQL
SQL
2 votes121 views1 answer
Mysql clear screen
SQL
0 vote125 views1 answer
Sql values that contains certain multiple ids
SQL
0 vote118 views1 answer
SAP Return
SQL
6 votes126 views3 answers
Mysql remove user privileges
SQL
0 vote123 views1 answer
Postgresql custom order by
SQL
53 votes284 views6 answers
Sql server alter column
SQL
16 votes120 views2 answers
Oracle ddl
SQL