Default query in cross-match form doesn't run

[dobos]

The default query in the cross-match form doesn't run anymore. The issue is that the catalog GALEX is no longer available as it was very old and now we have GALEXGR6 instead. A fully meaningful error message is returned from SkyQuery but it’s eaten by the ajax client and not displayed.

This is the correct example:

SELECT s.objid, s.ra, s.dec, g.objid, g.ra, g.dec, x.ra, x.dec
INTO twowayxmatch
FROM XMATCH(
MUST EXIST IN SDSSDR7:PhotoObjAll AS s
WITH(POINT(s.ra, s.dec), ERROR(0.1, 0.1, 0.1)),
MUST EXIST IN GALEXGR6:PhotoObjAll AS g
WITH(POINT(g.ra, g.dec), ERROR(0.2, 0.2, 0.2)),
LIMIT BAYESFACTOR TO 1e3
) AS x
WHERE s.ra BETWEEN 0 AND 5 AND s.dec BETWEEN 0 AND 5
AND g.ra BETWEEN 0 AND 5 AND g.dec BETWEEN 0 AND 5

[dobos]

I've added the fix as 82bbf97
The change might need to be backported to older DRs which have the cross-match form.