Sql query checker

CREATE TABLE employee

   ( employee_id VARCHAR(20),

    Name VARCHAR (20),

    Address VARCHAR (20),

    Mobile_no  SMALLINT);

Online sql testing tool

select * from sql_test_a

Source: sqltest.net

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

1 vote264 views1 answer
Oracle compile schema
SQL
0 vote303 views1 answer
Sql compound operators
SQL
0 vote318 views1 answer
Dasebase_url-postgres for windows
SQL
5 votes307 views1 answer
List foreign key oracle
SQL
0 vote331 views1 answer
To Create directory
SQL
0 vote301 views1 answer
Postgres add prefix to primary key
SQL
0 vote320 views1 answer
Psql list view rules
SQL
1 vote328 views1 answer
Delete specific row in sql
SQL
0 vote343 views1 answer
R write csv without index
SQL
2 votes380 views1 answer
Sql find not in list
SQL