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 vote309 views1 answer
Mysql select where text contains
SQL
0 vote345 views1 answer
Sql sum show 0 result
SQL
4 votes314 views1 answer
Oracle show errors compilation
SQL
6 votes343 views2 answers
Mysql timestamp to date
SQL
-1 vote324 views3 answers
Error mysql shutdown unexpectedly
SQL
0 vote342 views1 answer
Set Mamp mysql globally
SQL
0 vote342 views1 answer
Uncheck constraints and delete from table
SQL
1 vote331 views1 answer
Mysql return text after a final full stop
SQL
0 vote311 views1 answer
Sql select most frequent value in group
SQL
0 vote336 views1 answer
Mysql backup certain tables workbench
SQL