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 vote314 views1 answer
Oracle plsql sleep
SQL
0 vote315 views3 answers
Drop table operation failed on table 'TableHistory' because it is not supported operation on system-versioned temporal tables.
SQL
0 vote332 views1 answer
C# sql transaction multiple connections
SQL
0 vote289 views1 answer
Sql cheetsheet
SQL
0 vote329 views1 answer
Show all sequences postgres
SQL
1 vote290 views2 answers
Sqlalchemy postgres timestamp with timezone
SQL
0 vote274 views1 answer
Sql right characters
SQL
12 votes325 views1 answer
Run mysql instance in docker
SQL
1 vote302 views1 answer
Deleting database in sql
SQL
0 vote316 views1 answer
Migration graphql
SQL