Question

I have a SQL statement that returns a set of records:

SELECT
  members.id,
  members.name,
  emlink.tank,
  emlink.dps,
  emlink.heal,
  emlink.mid,
  emlink.eid
FROM 
  members, emlink
WHERE members.id = $mid AND emlink.eid = $eid

Result:

1 Widget 0 0 1 1 8

1 Widget 1 0 0 1 8

How can I merge these into a single record like:

1 Widget 1 0 1 1 8 

Thanks!

Answer 1

Do you want a bitwise OR? If so, use MySQL’s BIT_OR() aggregate function:

SELECT members.id,
       members.name,
       BIT_OR(emlink.tank),
       BIT_OR(emlink.dps ),
       BIT_OR(emlink.heal),
       BIT_OR(emlink.mid ),
       BIT_OR(emlink.eid )
FROM   members, emlink
WHERE  members.id = $mid AND emlink.eid = $eid

See it on sqlfiddle.