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 vote140 views2 answers
How to check username in mysql command line
SQL
27 votes169 views6 answers
Sql update record
SQL
0 vote147 views4 answers
Creating a comment and reply system PHP and MySQL
SQL
0 vote142 views1 answer
Xampp mysql version
SQL
18 votes146 views6 answers
Mysql create table
SQL
0 vote146 views1 answer
Cartesian product sql
SQL
5 votes166 views3 answers
Sql server utc to local
SQL
0 vote176 views1 answer
Mysql bind-address default value
SQL
0 vote135 views1 answer
Truncate table sql server foreign key
SQL
2 votes131 views1 answer
Ifnull postgres
SQL