I have two similar queries. The first one uses an alias in the GROUP BY clause, which causes an error. The second query uses the actual column name in the GROUP BY clause and passes.
Note that the other GROUP BY parameter is an alias in both cases. So, why would GROUPing work for one alias, but not for the other?
Q1 (Fails):
SELECT c.objectid AS charid,
c.charname AS charname,
SUM (num)
FROM speccharacter c
LEFT OUTER JOIN media m
ON m.mediachar = c.objectid
AND m.mediatype = '2'
GROUP BY charid, charname
ORDER BY charname
Q2 (Runs):
SELECT c.objectid AS charid,
c.charname AS charname,
SUM (num)
FROM speccharacter c
LEFT OUTER JOIN media m
ON m.mediachar = c.objectid
AND m.mediatype = '2'
GROUP BY charid, c.charname
ORDER BY charname
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