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 vote225 views1 answer
Sql count total by foreign key
SQL
2 votes202 views1 answer
Oracle calculated column
SQL
1 vote204 views1 answer
Postgresql define pk sequence next number
SQL
5 votes197 views2 answers
Mysqldump password
SQL
0 vote201 views1 answer
Inspecting a column unique/distinct values in SQL
SQL
2 votes224 views3 answers
Postgres json to string
SQL
19 votes195 views2 answers
Mysql add column after another
SQL
11 votes209 views1 answer
Creating tables in sql with python
SQL
0 vote222 views1 answer
Search starting with mysql
SQL
23 votes215 views1 answer
How remove column in mysql
SQL