Question

I got a mysql database column named country_id, like:

country_id
----------
1
2
59
435
2714

What I’m trying to accomplish now is to add leading zero’s to each ID, so the result would be:

country_id
----------
0001
0002
0059
0435
2714

Each ID should have max 4 digits. That’s it.

Is there any SQL statement I could use in PHPmyAdmin to update this country_id column in the way described above?

Best regards!

Answer 1

Declare ZEROFILL on the column:

mysql> create table foobar (nr integer(4) ZEROFILL);
Query OK, 0 rows affected (0.31 sec)

mysql> INSERT INTO foobar VALUES (1),(12),(123),(1234),(12345);
Query OK, 5 rows affected (0.05 sec)
Records: 5  Duplicates: 0  Warnings: 0

mysql> SELECT * FROM foobar;
|  0001 
|  0012 
|  0123 
|  1234 
| 12345