Question

I tried the following select:

SELECT (id,name) FROM v_groups vg 
INNER JOIN people2v_groups p2vg ON vg.id = p2vg.v_group_id
WHERE p2vg.people_id =0;

And, I get the following error column reference id is ambiguous.

If I try the same SELECT, but I only ask for name and not for id also, it works.

Any suggestions?

Answer 1

You need the table name/alias in the SELECT part (maybe (vg.id, name)) :

SELECT (vg.id, name)
FROM v_groups vg 
INNER JOIN people2v_groups p2vg
  ON vg.id = p2vg.v_group_id
WHERE p2vg.people_id = 0;