Your SQL command was:
 SELECT TOP 100 sp.objID, 
 sp.ra, 
 sp.dec, 
 sp.mjd, 
 px.taiBegin, 
 px.taiEnd, 
 sp.fiberID, 
 sp.z 
 FROM specPhoto AS sp 
 JOIN plateX AS px ON sp.plateID = px.plateID 
 WHERE 
 (sp.class='QSO') 
 AND sp.z > 3 

Your query output (max 500,000 rows):

objIDradecmjdtaiBegintaiEndfiberIDz
123768007446881949821.26941126.2650565741549593709624960667886.169713.043933
123768007446895027121.47019726.1102225741549593709624960667886.169895.346539
123768007446927831522.393126.1703185706249300765394930164808.176543.033433
123768007446967097623.38643426.0763085706249300765394930164808.178556.856383
123768007446980234323.62652326.0183025706249300765394930164808.179375.563787
123768007447006488624.2842825.7700675706249300765394930164808.17135.910794
123768007447013014424.41401625.7629125736049558389064955925243.165373.901954
123768007447039234225.1741325.6433875736049558389064955925243.163603.211686
123768007447072020426.04469325.5698135597848359042354836507467.889994.229861
123768007447117870827.1006625.3287275736049558389064955925243.1653.466368
123768007447124431527.29460725.2928735704649284424634928785464.184383.142175
123768007447124478127.33209425.3389165704649284424634928785464.184396.030838
123768007447144094327.77597625.2913165594648336563764833745439.871123.100249
123768007447163745828.24492925.3275185594448332312074833573619.864263.217814
123768007447248932830.35509124.8049345706449302497274930339629.177006.191983
123768007447294807131.57560224.6742915706449302497274930339629.171073.877052
123768007500208625512.11939327.3594765630148641595934864418126.878645.537344
123768007500241440612.98555327.4803885626648613994414861403289.865833.331252
123768007500306900914.56359227.3050475732949532409124953243773.137443.141419
123768007500319982014.84813727.3228155624048591573084859161154.865563.246681
123768007500372461916.31609527.1269465624048591573084859161154.867603.10887
123768007500385538216.53377627.075155624048591573084859161154.868033.393371
123768007500418348017.50051227.1288295736749563567174956532119.167483.033748
123768007500536342020.42649426.7187715741549593709624960667886.168336.823458
123768007500582146121.55941126.7000325621948572593164857351937.861373.041872
123768007500667392623.69436826.356215706249300765394930164808.179235.882922
123768007500680454224.06470426.2645535706249300765394930164808.179784.243001
123768007500765679526.25267926.0092385736049558389064955925243.168836.317843
123768007500791869726.85303925.8220935594648336563764833745439.877333.526891
123768007500804977727.25657225.8303935594648336563764833745439.878143.319881
123768007500883615629.21772325.5807955704649284424634928785464.189783.352381
123768007500890220929.37979725.3923365706449302497274930339629.175014.168654
123768007500896737329.5325825.5439735594448332312074833573619.861963.161914
123768007500922898630.16109225.4353665706449302497274930339629.176405.656546
123768007500981922131.57986525.0644875706449302497274930339629.179323.004542
123768007501001538932.16118525.0351435706449302497274930339629.179946.164371
123768007501008153232.27970924.8786925594748337465304833834742.871283.011359
123768007553980924714.21718927.7692645632348652784514866316353.864574.165885
123768007554007099214.89124327.6470165632348652784514866316353.863783.10244
123768007554020194315.26571127.7396545736349560122254956185528.163485.840771
123768007554033317315.6107727.6691255624048591573084859161154.866344.303513
123768007554059494516.35471727.640235624048591573084859161154.867503.297029
123768007554249623821.14629826.9946615741549593709624960667886.169416.537373
123768007554282335421.92440927.0060435622348576977744857701620.855006.120959
123768007554361005423.96084426.7959635706249300765394930164808.179463.790137
123768007554374105524.28730926.6833085706249300765394930164808.179824.0752
123768007554413423825.29595826.5438195622348575293484857705278.873663.233106
123768007554465903226.56783426.3209315736049558389064955925243.169195.839284
123768007554524788328.12404426.0156585704649284424634928785464.187263.342237
123768007554531373128.20392326.0309875704649284424634928785464.187643.340106
123768007554570702829.28932425.8943415594448332312074833573619.868185.225085
123768007554583802829.59278825.8236845706449302497274930339629.175453.745732
123768007554596881329.86287325.7181615706449302497274930339629.175963.279701
123768007554616556530.34683425.6254575706449302497274930339629.176753.486906
123768007554616574630.38499225.749375706449302497274930339629.177153.621592
123768007554649301431.21307725.6675875706449302497274930339629.178787.00572
123768007554662437231.58757525.5694865706449302497274930339629.179163.392319
123768007554682098732.01044125.4659555706449302497274930339629.179573.564063
123768007607536859010.97046928.4188245736049559133004955916163.149235.484462
123768007607543466911.07890928.265045736049559133004955916163.149643.116039
123768007607576245611.98787528.1795815657448880255794888029432.176123.479913
123768007607602437312.62645128.2214695735949558264644955830309.177323.064533
123768007607602446212.66756828.2439585735949558264644955830309.177313.047379
123768007607609005412.82670128.2511555657448880255794888029432.177763.385431
1237657772324487972163.7875356.8623165742849617173624961804997.156995.413505
1237657773924156154119.2585926.7803315553347980729104798078729.85366.826496
1237657773924156310119.1916326.7434685553347980729104798078729.85753.387422
1237657773925073275120.8901928.2454575553647983378474798341695.867423.712528
1237657773925270452121.2458728.6549965553747984240624798428988.874383.972485
1237657773925466673121.4992528.8921685553747984240624798428988.873883.14255
1237657773925794951122.2495829.4689545553747984240624798428988.877743.012143
1237657773927039674124.4816131.4063025558948029046254802909454.864464.370629
1237657773927694350125.7073532.4534165558948029046254802909454.868243.375834
1237657773929267842128.9835534.8579935553247979917414797997565.864003.057106
1237657773929398487129.2534635.0972925553247979917414797997565.866603.306818
1237657773929595373129.6535.3143155553247979917414797997565.867785.756143
1237657773930381719131.3858236.5701625745249638603384963864181.143194.032147
1237657773930381852131.3183436.5360815625148601163734860122184.863863.7263
1237657773931037676132.8666737.3566175745849642943824964382549.155155.948643
1237657773931496193133.9773938.1241965744649633421294963345973.161023.531464
1237657773931823659134.699138.5013645744749634312794963436103.164466.943116
1237657773932085860135.2737338.8891465744749634312794963436103.163883.643823
1237657773934183015140.3479341.7038645739049585166474958520489.136974.937937
1237657773935493758143.787843.2588625704849287920674928795909.144683.077547
1237657773935755812144.6254843.5888675704849287920674928795909.143193.090627
1237657773936410745146.3745444.3107925706249301708284930175651.155094.5284
1237657773936411177146.2478144.351385595748347040654834708893.88923.222798
1237657773936738908147.1242344.8391065595748347040654834708893.88113.835223
1237657774457815875113.5454121.6523995559148030749754803080786.875033.294226
1237657774458143189114.0318222.1330345559148030749754803080786.875943.464156
1237657774460699551118.2214226.5277845553347980729104798078729.852403.102553
1237657774460699595118.3130826.4703655553347980729104798078729.852313.639275
1237657774461879084120.3323128.4932295553547981615364798249448.859403.245853
1237657774462468348121.4959829.3147255553747984240624798428988.876517.011245
1237657774462469646121.5530129.4508765553747984240624798428988.876497.011245
1237657774462600179121.7170729.6489415553747984240624798428988.876833.137691
1237657774463321031123.15130.7485545554247987682114798859279.863923.673516
1237657774463583050123.5812931.1631235554247987682114798859279.867283.250256
1237657774463583169123.6367331.16215554247987682114798859279.867323.172535
1237657774464631500125.6972432.7836735553247979022574797990482.854543.313781