Author's rating on SQL Exercises site

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March 12, 03:31 MSK

SQL Exercises is intended for acquiring good practical experience, which is focused on data operation, namely on SQL DML. Certain exercises for beginners are provided on the site, they are supplied with the necessary reference source on SQL syntax with a great number of examples. Apart from them, 3 rating stages are suggested, they are aimed at testing of specialists and their certification. The source is absolutely free of charge, and the certificate purchase has a voluntary basis.
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Author's rating for second-stage exercises

ex_num - number of exercises of a given author;
avg_time(min) - the average time (in minutes) which spent for solution of one exercise of a given author by the leaders of rating system (TOP 20);
rating - the average time (in minutes) which spent for solution of all the exercises of a given author by the leaders of rating system (TOP 20);
avg_ball - the average of points received by participants' voting over all exercises of an author;
num_vote - number of votes given for all problems of an author

No	author	ex_num	avg_time(min)	rating	avg_ball	num_vote
1	Vojnov P.E. (paparome)	7	12103	84721	8.2	304
2	Sal'nikov S.A. ($erges)	6	10867	65202	8.2	203
3	Karasyova N.V. (vlksm)	6	8027	48162	8.6	154
4	Zotov P.G. (Ozzy)	12	3992	47904	8.2	339
5	Kuvalkin K.S. (Cyrilus)	2	23853	47706	9.3	67
6	Drozdkov A.N. (anddros)	9	3038	27342	8.0	271
7	Radar Yu.V. (inkerman)	2	12379	24758	8.4	43
8	Moiseenko S.I. (Serge I)	25	690	17250	6.8	1666
9	Pechatnov V.V. (pvv)	3	2807	8421	8.4	58
10	Yakutin N.V. (ZrenBy)	10	638	6380	6.9	332
11	Golubin R.S. (Roman S. Golubin)	2	1693	3386	8.5	131
12	Nikotin V.M. (@Nikotin)	1	3259	3259	9.3	10
13	Yuldashev M.R. (Snowbear)	2	1179	2358	8.6	67
14	Valuev D.I. (Fiolent)	8	278	2224	7.4	233
15	Makarov I.A. (_Bkmz_)	2	848	1696	8.4	65
16	Gershovich V.(VIG)	8	204	1632	6.9	361
17	Novikov D.A. (DimaN)	5	265	1325	7.3	239
18	Zverev D.L. (dimzv)	2	571	1142	7.9	56
19	Gorbunov A.V. (risp)	2	436	872	8.4	43
20	Mal'tsev A.V. (Palkin)	1	798	798	8.2	103
21	Sribnyak A.(silver)	1	558	558	8.3	16
22	Mikhajlov V.G. (mslava)	4	115	460	6.9	236
23	Rozhok Y.V. (yuriy.rozhok)	1	195	195	7.7	54
24	Murashkin I.V. (lepton)	1	179	179	8.3	35
25	Muravejko O.Yu. (Aaz)	1	68	68	6.4	53

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