MySQL query to update all entries with md5 version of name?

For this, you can use MD5(). Let us first create a table −

mysql> create table DemoTable1887
   (
   Password text,
   HashPassword text
   );
Query OK, 0 rows affected (0.00 sec)

Insert some records in the table using insert command −

mysql> insert into DemoTable1887(Password) values('John@9089');
Query OK, 1 row affected (0.00 sec)
mysql> insert into DemoTable1887(Password) values('90987_Carol');
Query OK, 1 row affected (0.00 sec)
mysql> insert into DemoTable1887(Password) values('656464_David_4343');
Query OK, 1 row affected (0.00 sec)

Display some records in the table using insert command −

mysql> select * from  DemoTable1887;

This will produce the following output −

+-------------------+--------------+
| Password          | HashPassword |
+-------------------+--------------+
| John@9089         |          NULL|
| 90987_Carol       |          NULL|
| 656464_David_4343 |          NULL|
+-------------------+--------------+
3 rows in set (0.00 sec)

Here is the query to update all entries with md5 version of name:

mysql> update DemoTable1887 set HashPassword=md5(Password);
Query OK, 3 rows affected (0.00 sec)
Rows matched: 3  Changed: 3 Warnings: 0

Let us check the table records once again:

mysql> select * from  DemoTable1887;

This will produce the following output −

+-------------------+----------------------------------+
| Password          | HashPassword                     |
+-------------------+----------------------------------+
| John@9089         | 7f92a7e09ab1a0cd3f36ec164f035c9a |
| 90987_Carol       | 1578fa8c47f0e53a898c8ada5c0111b4 |
| 656464_David_4343 | e5ec2bd2cb55b2252be7ca9eb546659e |
+-------------------+----------------------------------+
3 rows in set (0.00 sec)