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

0 vote186 views1 answer
Compress sql file database ubuntu
SQL
0 vote151 views1 answer
Data directory postgresql
SQL
0 vote141 views2 answers
Get top 1 row of each group
SQL
24 votes148 views2 answers
Alter table delete column
SQL
16 votes150 views2 answers
Gremove folder from git
SQL
2 votes158 views1 answer
Oracle index size
SQL
1 vote172 views1 answer
Sql server insert into temp table
SQL
0 vote167 views1 answer
Install sql server in ubuntu 20.04
SQL
27 votes182 views3 answers
Mysql show tables in database
SQL
4 votes168 views3 answers
Is not null sql
SQL