MySQL query to add 0's to numbers with less than 9 digits?

Use LPAD() to add 0's to numbers with less than 9 digits. Let us first create a table −

mysql> create table DemoTable (    Value varchar(20) ); Query OK, 0 rows affected (0.55 sec)

Insert some records in the table using insert command −

mysql> insert into DemoTable values('3646465'); Query OK, 1 row affected (0.29 sec) mysql> insert into DemoTable values('9485757591'); Query OK, 1 row affected (0.19 sec) mysql> insert into DemoTable values('485756'); Query OK, 1 row affected (0.18 sec) mysql> insert into DemoTable values('959585'); Query OK, 1 row affected (0.15 sec) mysql> insert into DemoTable values('124'); Query OK, 1 row affected (0.27 sec)

Following is the query to display all records from the table using select statement −

mysql> select *from DemoTable;

This will produce the following output −

+------------+ | Value | +------------+ | 3646465 | | 9485757591 | | 485756 | | 959585 | | 124 | +------------+ 5 rows in set (0.00 sec)

Following is the query to add 0's to numbers with less than 9 digits −

mysql> select lpad(Value,9,'0') from DemoTable;

This will produce the following output −

+-------------------+ | lpad(Value,9,'0') | +-------------------+ | 003646465 | | 948575759 | | 000485756 | | 000959585 | | 000000124 | +-------------------+ 5 rows in set (0.03 sec)