Course participants page.

>>> PostgreSQL ================
10,002 participants found
Window function: 47.435 ms
Existing: 19.635 ms + 45.277 ms
= EXISTING =============
30.7490234375
46.26025390625
44.967041015625
44.5029296875
44.847900390625
= PATCH ================
32.510009765625
32.31005859375
33.377197265625
32.190673828125
31.692138671875

50,002 participants found
Window function: 0.670645 s
Existing: 0.2863625 + 0.2037205 s
= EXISTING =============
213.658203125
228.67797851562
224.98291015625
224.751953125
228.94702148438
= PATCH ================
158.98974609375
163.25170898438
163.9072265625
159.76318359375
163.46411132812

100,001 participants found
Window function: 577.963 ms
Existing: 547.622 ms + 208.316 ms
= EXISTING =============
428.96118164062
426.4072265625
423.5927734375
444.5400390625
423.99096679688
= PATCH ================
389.51806640625
405.17700195312
399.48217773438
391.08129882812
397.23803710938

----------------------------------------------------------------------

>>> MySQL ================
10002 participants found
Window function: 0.0854575 s
Existing: 0.05423125 + 0.04234325 s
= EXISTING =============
90.611328125
94.174072265625
96.56103515625
97.379150390625
92.7890625
= PATCH ================
83.73486328125
87.347900390625
88.81494140625
84.9228515625
87.091064453125

50002 participants found
Window function: 0.670645 s
Existing: 0.2863625 + 0.2037205 s
= EXISTING =============
460.35278320312
474.86083984375
473.07299804688
484.0029296875
496.41381835938
= PATCH ================
636.134765625
655.69189453125
655.87377929688
669.59985351562
644.69409179688

----------------------------------------------------------------------

>>> MariaDB ================
10001 participants found
Window function: 97 ms
Existing: 80 ms + 54 ms
= EXISTING =============
68.094970703125
64.85791015625
69.9169921875
74.880126953125
70.383056640625
= PATCH ================
59.10888671875
59.2177734375
58.218017578125
58.2490234375
57.85498046875

50002 participants found
Window function: 
Existing: 
= EXISTING =============
322.09936523438
306.65991210938
324.244140625
319.22290039062
335.01196289062
= PATCH ================
294.46704101562
321.912109375
310.9072265625
325.92895507812
309.52099609375

100001 participants found
= EXISTING =============
978.39599609375
961.50610351562
942.01586914062
956.60498046875
975.50708007812
= PATCH ================
728.44189453125
746.84790039062
741.56396484375
732.673828125
738.98486328125

----------------------------------------------------------------------

>>> MSSQL ================
10001 participants found
= EXISTING =============
38.85302734375
44.982177734375
38.836181640625
39.016845703125
36.10107421875
= PATCH ================
41.2490234375
43.803955078125
44.427734375
48.156982421875
42.168701171875

50001 participants found
= EXISTING =============
52.451904296875
75.25
68.308837890625
69.64306640625
75.723876953125
= PATCH ================
258.98779296875
255.92504882812
253.576171875
254.07495117188
258.69213867188