Question

The code below is part of a query. I seem to have the format wrong for the part of the code that says AND ON C2.loginid = S2.loginid. What format should I use?

Thanks in advance,

John

LEFT JOIN (
    SELECT S2.loginid, COUNT(1) AS total 
    FROM submission S2
    INNER JOIN comment C2
    ON C2.submissionid = S2.submissionid
    AND ON C2.loginid = S2.loginid
    GROUP BY S2.loginid
) scs ON scs.loginid = l.loginid

Answer 1

AND ON C2.loginid = S2.loginid ==> Remove ON after the AND

LEFT JOIN (
    SELECT S2.loginid, COUNT(1) AS total 
    FROM submission S2
    INNER JOIN comment C2
    ON C2.submissionid = S2.submissionid
      AND C2.loginid = S2.loginid
    GROUP BY S2.loginid
) scs ON scs.loginid = l.loginid