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
123768007554361005423.96084426.7959635706249300765394930164808.179463.790137
123768007554374105524.28730926.6833085706249300765394930164808.179824.0752
1237657775003600010129.59636.2900385745049636873474963693152.131315.448834
1237657775003664678129.6338936.4716115745049636873474963693152.131345.646598
1237680093260350063337.9112516.5678375623548587133394858716203.845923.075377
1237680093256483596328.8912115.2152615580648216549654821659799.844294.03356
1237679008244826729343.738558.31498915618148540580824854060946.838803.043622
1237679008244826797343.774818.45564475618148540580824854060946.838743.724212
1237679008781500965343.257968.68542435618148540580824854060946.837903.760303
1237679008244564795343.203568.39307765618148540580824854060946.837603.098758
1237679009317585318341.395419.11966865619048548355384854838402.857823.147803
1237679008243581567340.922838.26157555619048548355384854838402.856823.001535
1237679009317323145340.829478.95178115619048548355384854838402.856263.092768
1237679008243450270340.552668.16081545619048548355384854838402.856063.021666
1237679008779927586339.661728.59076195620848563847204856388566.859155.210487
1237679008243056718339.703518.05927315620848563847204856388566.858904.633319
1237679008779534645338.843538.44891515620848563847204856388566.857243.560957
1237679008242270930337.92038.01496775620848563847204856388566.855223.148409
1237679008242139323337.656027.97804125620948564712754856475122.859756.711112
1237679008241877535336.92677.90464625620948564712754856475122.858203.335215
1237680093257204765330.6098815.5986585582948236368024823640650.844723.071453
1237680092726297576344.7652617.0901335619048548316454854834511.868163.763329
1237680093262578256343.1947417.17015619048548316454854834511.865143.207112
1237680092726297338344.7152216.9257855619048548316454854834511.862803.338742
1237680093262316014342.5452417.2739475624448594857394859490570.878943.848562
1237680093262250252342.501617.1626055624448594857394859490570.871603.13163
1237680092725576327342.9491816.7471655624448594857394859490570.87904.058766
1237680093261398323340.4696817.0096995620848563810644856383930.84643.201977
1237680093259235726335.4181216.1830725583048237257134823729559.852883.778798
1237657775545779097142.0113644.034155635448689171864869003582.892603.037182
1237657775546499212143.9638444.7790915635448689171864869003582.89123.086139
1237657775009562902143.9648144.4589215635448689171864869003582.89103.066496
1237657775545451121141.1506843.5640295594448333248224833586694.858283.301119
1237657775008318198140.7421543.0033835594448333248224833586694.857683.684964
1237657775008056177140.1495542.5881935594448333248224833586694.853583.652777
1237657775542633317134.1390539.8671535624848598582794859862127.859383.381964
1237657776079569437133.9602340.1519925624848598582794859862127.858883.341348
1237657776078914056132.4451739.2113975624848598582794859862127.854584.107968
1237657775542567499134.0287439.6566845624848598582794859862127.851114.135811
1237657775543222678135.5623740.5551015597148359069604835910808.856883.332278
1237657775542960770134.8813640.3111725597148359069604835910808.856115.678512
1237657775542894718134.6375940.2008735597148359069604835910808.855703.002565
1237657776080093464135.2265641.0114965598348367706114836945426.87963.003143
1237657776079962969135.001240.7680045598348367706114836945426.87843.532859
1237657776081076342137.5115442.3398825599948383217784838325627.868163.066973
1237657776080946235137.2997442.254725599948383217784838325627.862744.733271
1237657776069608259114.4457524.416185558748025585874802734375.875563.599742
1237657776069411689114.0008324.1200275558748025585874802734375.875523.134852
1237657776069345880113.8320224.017955586648267703424826857204.851663.287723
1237657775532868694115.0236224.4360275586648267703424826857204.85483.778797
1237657775533261475115.5465225.1252045560048031597944803853041.893324.521414
1237657775533327209115.5804525.2319415560048031597944803853041.892983.157112
1237657775534965822118.5573627.9148635553347980729104798078729.858343.014158
1237657775534506950117.7778927.1343435553347980729104798078729.856983.330296
1237657776071509035117.6612127.6921795553347980729104798078729.856703.053258
1237657775533917117116.7577226.1602585553347980729104798078729.854824.321743
1237657775535358462119.2432628.5268245553547981615364798249448.857683.165937
1237657776072622798119.5626229.5133165553547981615364798249448.857463.289495
1237657776072098929118.769628.6441625553547981615364798249448.856443.746019
1237657776071771090118.1608428.0877755553547981615364798249448.854723.39518
1237657775534900107118.4072927.803455553547981615364798249448.854223.534933
1237657775534965828118.572727.9046955553547981615364798249448.853843.067936
1237657775537128131122.4396731.4801845554247987682114798859279.865163.799004
1237674289148134000126.9835634.919995553247979022574797990482.857485.548108
1237680092724789929341.1175716.5264495624448594857394859490570.874643.084901
1237680092723610176338.287116.2811375623548587133394858716203.846803.351444
1237680092723413703337.880216.1412245623548587133394858716203.845963.442786
1237680092722365292335.444615.8773925575148169201214816924949.859683.707666
1237680092719743082329.2790714.8474295580648216549654821659799.843263.204932
1237680092187198265339.5310215.9563425620848563810644856383930.842423.786386
1237680092186411460337.6505415.7096755582348217431284823123961.859883.483323
1237680092184772888333.7751115.2023875575148169201214816924949.853623.284405
1237680091652293233344.1330316.0497975619048548316454854834511.863503.012523