Author's rating on SQL Exercises site

October 28, 02:43 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_length - the average wording length in symbols;
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_length	avg_time(min)	rating	avg_ball	num_vote
1	Bezhaev A.Yu. (Baser)	21	923	35748	750708	8.6	514
2	Krasovskij E.A. (pegoopik)	25	944	21045	526125	8.9	538
3	Zotov P.G. (Ozzy)	20	1092	16768	335360	8.4	1656
4	Drozdkov A.N. (anddros)	15	698	20780	311700	8.5	1179
5	Kurochkin P.A. (qwrqwr)	29	628	8300	240700	8.2	2735
6	Karasyova N.V. (vlksm)	9	949	22844	205596	8.8	463
7	Vojnov P.E. (paparome)	6	739	17377	104262	8.6	750
8	Sal'nikov S.A. ($erges)	6	822	15490	92940	8.7	415
9	Chebykin D.N. (GriGrim)	4	733	18988	75952	8.9	158
10	Latyntsev N.G. (aks_nsk)	1	1132	63065	63065	9.3	15
11	Grinkevich D.L. (Dmitrij Grinkevich)	6	605	10262	61572	7.7	730
12	Radar Yu.V. (inkerman)	2	887	27386	54772	8.5	100
13	Utyonkov M.N. (=Maxim=)	3	897	17226	51678	8.7	68
14	Kuvalkin K.S. (Cyrilus)	2	782	25353	50706	9.2	130
15	Dvoryaninov V.(Valdaj)	1	1559	45715	45715	8.4	21
16	Koptel'tsev V.(selber)	4	1113	10592	42368	8.8	158
17	Fomichev A.V. (Fomichev)	1	1495	37829	37829	7.0	19
18	Maslyaev V.S. (Velmont)	1	703	21673	21673	9.7	49
19	Pechatnov V.V. (pvv)	3	876	6457	19371	8.3	128
20	Moiseenko S.I. (Serge I)	19	309	963	18297	7.7	4836
21	Nikotin V.M. (@Nikotin)	1	909	17228	17228	8.5	21
22	Kostomarov A.V. (al29)	3	1181	5052	15156	9.7	16
23	Filippkin D.V. (_dimon_)	1	483	8867	8867	10.0	11
24	Yuldashev M.R. (Snowbear)	2	924	4315	8630	8.7	151
25	Doschenko V.N. (mcrain)	2	1464	4252	8504	8.1	8
26	Yakutin N.V. (ZrenBy)	8	330	987	7896	7.5	2113
27	Makarov I.A. (_Bkmz_)	2	724	3464	6928	8.1	187
28	Gershovich V.(VIG)	7	292	978	6846	7.9	1559
29	Valuev D.I. (Fiolent)	8	416	649	5192	7.8	1248
30	Boiko D.(Angellore)	1	332	5098	5098	9.4	16
31	Shuravin E.P. (dumkan)	1	509	4995	4995	8.0	105
32	Gorbunov A.V. (risp)	3	1356	1565	4695	8.2	651
33	Deev A.V. (pickman)	2	1193	2222	4444	8.2	134
34	Golubin R.S. (Roman Golubin)	2	494	1780	3560	8.2	467
35	Chernov D.V. (Kursist)	2	1009	1551	3102	9.6	5
36	Novikov D.A. (DimaN)	5	381	465	2325	7.5	1135
37	Zverev D.L. (dimzv)	2	378	937	1874	8.2	161
38	Sribnyak A.(silver)	1	949	1420	1420	8.8	170
39	Pyrkin S.(crescent)	1	521	1106	1106	8.9	107
40	Kukushkin S.A. (smog)	2	569	421	842	8.9	135
41	Mal'tsev A.V. (Palkin)	1	249	691	691	8.4	357
42	Shkarednyj I.N. (Gosha)	2	301	325	650	9.0	59
43	Vanin V.(_Virt_)	1	1780	580	580	8.2	135
44	Mikhajlov V.G. (mslava)	2	413	262	524	7.9	254
45	Ostapchuk A.B. (_ORA_)	1	451	357	357	7.5	122
46	Yunusov R.N. (Ruslan1707)	1	367	319	319	7.4	143
47	Yakovlev M.V. (MikhailYakovlev535)	1	1634	192	192	4.5	4
48	Murashkin I.V. (lepton)	1	798	172	172	8.4	141
49	Chobitok V.(vasia armor)	1	498	166	166	7.9	381
50	Petrov D.B. (GiBis)	1	695	78	78	7.5	322
51	Muravejko O.Yu. (Aaz)	1	631	77	77	6.9	438

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