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 vote375 views2 answers
How to drop mili second in sql
SQL
0 vote335 views1 answer
Mysql enter ubuntu
SQL
0 vote347 views1 answer
Sql script get all stored procedures from database
SQL
1 vote379 views1 answer
Sql first day quarter
SQL
0 vote324 views2 answers
Find lowest number in sql
SQL
11 votes325 views2 answers
Oracle all source
SQL
1 vote322 views1 answer
Sql server update column based on another table
SQL
14 votes334 views3 answers
Oracle sql limit results
SQL
3 votes299 views1 answer
Mysql CURRENT_TIMESTAMP()
SQL
0 vote326 views1 answer
How to combine rows in sql server procedure
SQL