SQL exercises

May 28, 12:08 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  • 2nd stage rating up to exercise:
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  • Rating on the exercise:
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  • Optimistic rating
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Olympic rating

Only the first ten results on each exercise are taken into account.
First rate on each exercise gives 12 points, second rate - 10, third rate - 8 and so on from 7 to 1.
Scores - sum of points on all the exercises solved.
1st, 2nd, 3rd - the number of first, second, and third ranks respectively
Num_of_Ex - number of exercises, which have been proposed by competitor.

No	Surname	Scores	1st	2nd	3rd	Num_of_Ex
1	Krasovskij E.A. (pegoopik)	1181	30	53	18	29
2	Sal'nikov S.A. ($erges)	754	6	15	22	6
3	Kurochkin P.A. (qwrqwr)	524	29	2	5	29
4	Bezhaev A.Yu. (Baser)	513	26	3	5	26
5	Filippkin D.V. (_dimon_)	470	1	11	15	1
6	Drozdkov A.N. (anddros)	459	15	6	10	15
7	Yatsuk A.A. (Faust_zp)	341	0	8	3	0
8	Dubinskij A.V. (_velial)	332	1	7	11	0
9	Vyazovetskov A.S. (alex_v)	282	0	4	9	0
10	Kreslavskij O.M. (Arcan)	267	0	3	5	0
11	Karasyova N.V. (vlksm)	262	9	1	2	9
12	Samarin A. (not.yet.sql.master)	246	0	10	8	0
13	Zotov P.G. (Ozzy)	244	20	0	0	20
14	Vol'khin S.A. (Sergei Volkhin)	243	2	8	12	0
15	Boiko D. (Angellore)	237	1	1	4	1
16	Fokin A. (Vizitor )	235	0	4	5	0
17	Vojnov P.E. (paparome)	213	6	4	2	6
18	Mullakhanov R.Kh. (rem)	203	1	6	2	0
19	Timofeeva E.V. (Umrikhina)	191	1	2	4	0
20	Tkachenko D. (_GUERNIKA_)	190	0	12	3	0
21	Kuznetsov V.S. (herrRo)	181	0	5	3	0
22	Govorov E. (erxaan)	179	2	7	6	0
23	Doschenko V.N. (mcrain)	174	2	3	2	2
24	Chernov D.V. (Kursist)	162	3	1	1	3
25	Movlyanov A.P. (Oct)	159	0	3	3	0
26	Kolos O. (the_bald)	140	0	1	3	0
27	Koptel'tsev V. (selber)	138	5	2	1	6
28	Suprun D. (TimonSP)	117	0	2	2	0
29	Gireiko E. (Zubryonok)	117	0	2	6	0
30	Yakutin N.V. (ZrenBy)	107	8	0	1	8
31	Zajtsev V.S. (Sleeping)	102	0	1	2	0
32	Valuev D.I. (Fiolent)	96	8	0	0	8
33	Chebykin D. (GriGrim)	96	4	1	0	4
34	Kostomarov A.V. (al29)	96	3	0	0	3
35	Gershovich V. (VIG)	94	7	1	0	7
36	Grinkevich D.L. (Dmitrij Grinkevich)	90	6	0	0	6
37	Kukushkin S.A. (smog)	89	2	0	2	2
38	Kalinin K.A. (kalinin_k)	88	0	2	0	0
39	Makarov I.A. (_Bkmz_)	88	2	0	1	2
40	Pup P.P. (pupa_pupa)	85	2	3	2	0
41	Agapov V. (KERBEROS)	83	0	0	2	0
42	Krasnov A.A. (Nutr1k)	81	2	1	2	0
43	Asov (pofig)	80	1	3	1	0
44	Gmar' D.V. (dimervvsu)	79	0	0	0	0
45	Nikotin V.M. (@Nikotin)	79	1	2	3	1
46	Karpov I. (Dompaff)	74	0	1	2	0
47	Galkin D.V. (B52)	74	1	4	2	0
48	Lyubomudrov R.G. (born2tilt)	74	0	0	3	0
49	Nn J. (DAKUCAPORYK)	74	0	1	3	0
50	Timchenko S. (timka__s)	73	0	3	1	0
51	Halushka B. (halushka)	69	0	1	1	0
52	Fogel' A. (Hockmoon)	69	0	2	2	0
53	Kajkova I.V. (ira_kay)	68	0	3	2	0
54	Aliev R. (y4nzi)	65	0	0	0	0
55	Utyonkov M.N. (=Maxim=)	64	3	0	1	3
56	Kotov A. (Ckpa6)	64	0	1	3	0
57	Yuldashev M.R. (Snowbear)	59	2	0	0	2
58	Osin V. (anyman1979)	54	0	0	0	0
59	Epifanov D. (Owen_sql)	49	0	1	1	0
60	Latyntsev N.G. (aks_nsk)	48	1	0	0	1
61	Anisimov D. (danilko)	48	0	1	1	0
62	Novikov D.A. (DimaN)	48	4	0	0	5
63	Petrov Y. (YuriPetrov)	47	0	0	0	0
64	Grecha (grecha)	43	0	1	0	0
65	Rustem (Chesnok)	42	0	2	0	0
66	Pusev D.V. (Pusev_Denis)	42	0	0	0	0
67	Moskvin P. (Respect)	42	0	1	0	0
68	Osadchij V.V. (Mathematician)	40	0	1	0	0
69	Sigankov V.I. (vasilyvanc)	40	0	0	0	0
70	Lapenko M.F. (Martha_pryde)	40	1	0	0	0
71	Iljy (iljy)	39	0	0	1	0
72	Filipas I.M. (Axocopan)	39	0	0	0	0
73	Pechatnov V.V. (pvv)	39	3	0	0	3
74	Stepanenko K.Yu. (St.Constantine87)	38	0	2	0	0
75	Fedevych V.I. (labuch_fedev)	38	0	0	0	0
76	Shkarednyj I.N. (Gosha)	37	2	0	0	2
77	Gorbunov A.V. (risp)	37	3	0	0	3
78	Basharin E. (eaniconer)	37	0	1	0	0
79	Tsch S. (SergeyTsch)	36	1	0	0	0
80	Pavlov E.A. (Eugene Pavlov)	36	0	0	1	0
81	Borzov V.V. (simulacrum)	35	0	0	0	0
82	Ivanova O.A. (_Olga24)	34	0	0	2	0
83	Myachin I.M. (getred)	33	0	1	1	0
84	Lagunov M.T. (Opengate48)	33	1	0	1	0
85	Mikhajlov V.G. (mslava)	32	1	1	0	1
86	Kuvalkin K.S. (Cyrilus)	32	2	0	1	2
87	Murashkin I.V. (lepton)	31	1	0	1	1
88	Lyaskovskij V.L. (blr_Oliver)	31	1	0	0	1
89	Korolev A. (Gluck)	30	0	0	0	0
90	Rakovich A. (Lohmatyi)	30	0	0	0	0
91	ivanov (godmot)	30	0	3	0	0
92	Titovskij P.S. (kli3ma)	29	0	0	0	0
93	Badakh'yan S. (wamp.j)	29	0	0	1	0
94	Varenikov D.M. (Dmitriy Varenikov)	28	0	0	1	0
95	Shindin A.V. (AlShin)	28	0	0	0	0
96	Tarasevich S. (Aprilfire)	28	0	0	2	0
97	Lysenko O. (Oleg15062025)	27	0	0	2	0
98	Shishkin D. (Shinuz)	27	0	2	0	0
99	Marina (marishkin)	27	0	1	0	0
100	Vakhrameev A. (WY)	26	0	0	0	0

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