Your SQL command was:
SELECT TOP 10 p.objid, p.ra, p.dec, ISNULL(s.specobjid,0) AS specobjid, ISNULL(s.z, 0) AS z 
FROM Galaxy AS p
LEFT OUTER JOIN SpecObj s ON s.bestObjID = p.objID 
WHERE 
p.u BETWEEN 0 AND 19.6 AND p.g BETWEEN 0 AND 20

Your query output (max 500,000 rows):

objidradecspecobjidz
1237651758284997753270.013518211282-0.001222429295617400
1237651758284998226270.0553029116820.050486695891064500
1237651758284997995270.0352231930710.087958714302100300
1237651758284932353269.9590456815510.093606285264965100
1237651758284997361269.9927815409260.10503045530720500
1237651758284998234270.0679488552770.087477092889534300
1237651758284931153269.8821989004150.020965087333718300
1237651758284997600270.0635433628950.10618486302958900
1237659089256514399270.027505056505-0.12875332214072200
1237651758284931202269.8724323491920.04618075277764100