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SQL exercises

January 18, 11:16 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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SQL exercises

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Recent leaders activity

Rating - rating position;
3rd score - number of points earned on the third stage;
Ex - exercise's number;
Start - time when the exercise was started;
Finish - time when the exercise was solved;
S_time (min) - time in minutes spent for solving the exercise

Involved in rating: 15322

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Petrov Y. (YuriPetrov)	32	76	198	2026-01-17 16:11:10		1145
2	Sarkis'yan G. (gennadi_s)	16	142	190	2026-01-11 13:55:22	2026-01-12 11:21:39	1286
3	Sarkis'yan G. (gennadi_s)	16	142	189	2025-12-25 14:50:28	2026-01-05 12:53:05	15723
4	Petrov Y. (YuriPetrov)	32	76	233	2026-01-03 02:07:30	2026-01-05 04:08:29	3001
5	Lukov D.R. (Gendalf)	242	0	32	2025-12-05 01:36:21		63940
6	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		275643
7	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		397364
8	Fomichev A.V. (Fomichev)	198	0	7	2025-02-25 02:16:37		471420
9	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		479518
10	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		509766
11	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		521955
12	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		669808
13	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		671116
14	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		693866
15	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		721306
16	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		803405
17	Slavutinskij V.V. (Vasilko)	448	0	5	2024-04-22 17:26:35		915470
18	Slavutinskij V.V. (Vasilko)	448	0	7	2024-04-22 17:26:21		915470
19	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		944626
20	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		971147
21	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		984778
22	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1050821
23	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1054135
24	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1056524
25	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1089189
26	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		1134365
27	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1141452
28	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1166028
29	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1411060
30	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1448616
31	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1482606
32	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1586595
33	Koptel'tsev V. (selber)	21	119	237	2022-11-06 21:16:51		1682759
34	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1721968
35	Lukov D.R. (Gendalf)	242	0	90	2022-07-21 11:18:50		1838877
36	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1985459
37	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2237215
38	Fedevych V.I. (labuch_fedev)	37	65	221	2021-07-20 17:09:05		2365567
39	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2499921
40	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2542108
41	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2545855
42	Kozharinov A. (bubala)	208	0	10	2020-09-30 09:55:07		2787921
43	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		2855284
44	Koptel'tsev V. (selber)	21	119	259	2020-06-24 00:22:07		2929614
45	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		2994568
46	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		3002539
47	Fedevych V.I. (labuch_fedev)	37	65	226	2020-04-06 22:22:48		3042053
48	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3065781
49	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3376170
50	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3403452
51	Romanov K.Yu. (kostik)	308	0	12	2019-07-25 08:42:10		3411514
52	Kordyum A. (alko58)	225	0	12	2019-07-12 15:58:52		3429797
53	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3473876
54	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3613851
55	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3712119
56	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3715300
57	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3857491
58	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3918038
59	Voevutskij S.A. (SergLK)	214	0	45	2018-07-01 13:19:14		3971397
60	Zyrin V.E. (Vezyr)	541	0	29	2018-05-29 14:14:19		4018862
61	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		4110928
62	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4114838
63	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4114916
64	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4137546
65	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4151703
66	F (uff)	65	25	95	2018-01-22 15:57:03		4201639
67	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4253308
68	Kordyum A. (alko58)	225	0	101	2017-11-21 18:18:43		4290777
69	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4292539
70	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4293607
71	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4331322
72	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4358439
73	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4391502
74	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4468147
75	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4514691
76	Vorob'ev E.V. (Johnnymnemonic)	161	0	138	2017-06-16 09:15:49		4518840
77	F (uff)	65	25	185	2017-06-01 10:27:49		4540368
78	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4580241
79	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4642132
80	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4877036
81	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4912509
82	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4991732
83	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5122067
84	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5164167
85	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5333587
86	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5365275
87	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5399274
88	Fomichev A.V. (Fomichev)	198	0	101	2015-10-07 11:21:04		5408635
89	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5434481
90	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5448785
91	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5450471
92	Varenikov D.M. (Dmitriy Varenikov)	19	128	263	2015-08-31 08:35:37		5462081
93	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5465652
94	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5468983
95	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5512668
96	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5513935
97	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5522497
98	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5532227
99	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5540854
100	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5771293

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