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SQL exercises

February 21, 19:16 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: 15372

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Polyakov V.M. (rock_4)	134	0	138	2026-02-20 17:03:21		1573
2	Polyakov V.M. (rock_4)	134	0	137	2026-02-13 11:01:59	2026-02-20 16:48:54	10427
3	Komarov A.N. (Shveda Saulya)	41	59	157	2024-09-04 13:29:47	2026-02-19 14:50:22	767601
4	Polyakov V.M. (rock_4)	134	0	135	2026-02-09 12:37:00	2026-02-13 10:46:31	5650
5	Komarov A.N. (Shveda Saulya)	41	59	150	2023-11-22 17:11:28	2026-02-13 01:49:19	1171238
6	Sarkis'yan G. (gennadi_s)	16	149	194	2026-02-10 15:42:58		16054
7	Polyakov V.M. (rock_4)	134	0	134	2026-01-29 14:49:41	2026-02-09 11:35:19	15646
8	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		37541
9	Lukov D.R. (Gendalf)	244	0	32	2025-12-05 01:36:21		113380
10	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		325084
11	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		446804
12	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		528959
13	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		559207
14	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		571395
15	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		719248
16	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		720556
17	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		743307
18	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		852845
19	Slavutinskij V.V. (Vasilko)	453	0	5	2024-04-22 17:26:35		964910
20	Slavutinskij V.V. (Vasilko)	453	0	7	2024-04-22 17:26:21		964910
21	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		994066
22	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		1020587
23	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		1034219
24	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1100261
25	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1103575
26	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1105965
27	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1138630
28	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1190892
29	Rudikov E. (cubie)	135	0	138	2023-10-31 17:27:54		1215469
30	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1498057
31	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1532046
32	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1636035
33	Koptel'tsev V. (selber)	21	119	237	2022-11-06 21:16:51		1732200
34	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1771408
35	Lukov D.R. (Gendalf)	244	0	90	2022-07-21 11:18:50		1888318
36	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2034899
37	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2286656
38	Fedevych V.I. (labuch_fedev)	37	65	221	2021-07-20 17:09:05		2415008
39	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2549362
40	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2591548
41	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2595296
42	Kozharinov A. (bubala)	209	0	10	2020-09-30 09:55:07		2837362
43	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		2904725
44	Koptel'tsev V. (selber)	21	119	259	2020-06-24 00:22:07		2979055
45	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		3044009
46	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		3051979
47	Fedevych V.I. (labuch_fedev)	37	65	226	2020-04-06 22:22:48		3091494
48	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3115221
49	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3425611
50	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3452893
51	Romanov K.Yu. (kostik)	309	0	12	2019-07-25 08:42:10		3460955
52	Kordyum A. (alko58)	227	0	12	2019-07-12 15:58:52		3479238
53	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3523316
54	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3663292
55	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3761559
56	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3764740
57	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3906931
58	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3967478
59	Voevutskij S.A. (SergLK)	215	0	45	2018-07-01 13:19:14		4020838
60	Zyrin V.E. (Vezyr)	544	0	29	2018-05-29 14:14:19		4068302
61	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		4160369
62	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4164278
63	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4164357
64	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4186986
65	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4201143
66	F (uff)	65	25	95	2018-01-22 15:57:03		4251080
67	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4302748
68	Kordyum A. (alko58)	227	0	101	2017-11-21 18:18:43		4340218
69	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4341979
70	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4343048
71	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4380762
72	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4407879
73	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4440942
74	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4517587
75	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4564132
76	Vorob'ev E.V. (Johnnymnemonic)	161	0	138	2017-06-16 09:15:49		4568281
77	F (uff)	65	25	185	2017-06-01 10:27:49		4589809
78	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4629682
79	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4691573
80	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4926477
81	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4961949
82	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		5041173
83	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5171508
84	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5213607
85	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5383028
86	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5414715
87	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5448714
88	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5458076
89	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5483922
90	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5498226
91	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5499912
92	Varenikov D.M. (Dmitriy Varenikov)	19	128	263	2015-08-31 08:35:37		5511521
93	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5515092
94	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5518423
95	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5562109
96	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5563376
97	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5571938
98	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5581668
99	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5590295
100	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5820734

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