Alter table?
I have a mysql DB for me forum and a couple of people seem to have become deleted .I have backups of the members table and can insert that no problem.
The problem is with posts, basically they are associated with their poster by a member id column thingy. When a user is deleted the member id coloumn is set to -1.
The table is called members, the column with the member ID is called ID_MEMBER and the column with the members name is called posterName
So I'm wanting to change value of ID_MEMBER column to 604 from -1 where the value of posterName is bob
I'v looked on the mysql site but cant work out what query I need though

Any ideas?
Cheers