Troubleshooting issues in Oracle, RedHat Linux, Windows and lot more!.

How to make the email Address Dummy in Oracle Database? Query to make the email Address as dummy, update <tablename> set <Columnname> = '@' || <Columnname> where <Columnname>  is not null; Query to Remove the email Address as dummy, update <tablename> set <Columnname>= substr(<Columnname>,2,length(<Columnname>)) where <Columnname> is not null;