Then we change the TAP Service to http://dc.zah.uni-heidelberg.de/tap and perform the following query:
SELECT TOP 100
tgas.*, sdss.u, sdss.i, sdss.r, sdss.g
FROM sdssdr7.sources AS sdss
JOIN TAP_UPLOAD.t1 AS tgas
ON 1=CONTAINS(
POINT('ICRS', sdss.ra, sdss.dec),
CIRCLE('ICRS', tgas.ra, tgas.dec, 3./3600.))
You must replace the 1 in tap_upload.t1 with the index of the table you want to match.
You may also need to adjust the column names of RA and Dec for your table, and the match radius.