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SQL exercises

April 16, 11:02 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: 15078

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Polyakov V.M. (rock_4)	94	9	146	2026-04-06 15:53:06	2026-04-15 17:22:34	13049
2	Polyakov V.M. (rock_4)	94	9	24	2026-04-14 15:22:40	2026-04-14 16:03:02	40
3	Sarkis'yan G. (gennadi_s)	15	160	198	2026-04-13 14:57:51		4084
4	Kostomarov A.V. (al29)	5	247	24	2026-04-13 13:11:46	2026-04-13 14:15:15	63
5	Kuritsyn V.N. (ValNick)	139	0	24	2026-04-11 22:13:57	2026-04-11 22:41:38	28
6	Komarov A.N. (Shveda Saulya)	38	62	159	2026-04-10 16:59:02		8283
7	Sarkis'yan G. (gennadi_s)	15	160	197	2026-04-10 12:16:57	2026-04-10 15:25:18	188
8	Komarov A.N. (Shveda Saulya)	38	62	158	2026-04-06 16:38:40	2026-04-07 00:39:10	481
9	Komarov A.N. (Shveda Saulya)	38	62	24	2026-04-06 16:13:31	2026-04-06 16:30:45	17
10	Polyakov V.M. (rock_4)	94	9	254	2026-03-25 09:58:47	2026-04-06 15:22:00	17603
11	Sarkis'yan G. (gennadi_s)	15	160	196	2026-04-04 14:52:32	2026-04-06 14:56:09	2884
12	Chernov D.V. (Kursist)	2	262	24	2026-04-05 21:27:47	2026-04-05 22:13:10	45
13	Koptel'tsev V. (selber)	20	122	24	2026-04-05 18:00:17	2026-04-05 18:20:48	21
14	Kurochkin P.A. (qwrqwr)	11	211	24	2026-04-05 13:51:41	2026-04-05 14:52:27	61
15	Sarkis'yan G. (gennadi_s)	15	160	24	2026-04-04 13:32:52	2026-04-04 13:45:41	13
16	Krasovskij E.A. (pegoopik)	1	262	24	2026-04-03 23:24:48	2026-04-03 23:24:51	0
17	Polyakov V.M. (rock_4)	94	9	148	2026-04-01 11:23:28		21579
18	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		114806
19	Lukov D.R. (Gendalf)	245	0	32	2025-12-05 01:36:21		190646
20	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		402349
21	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		524069
22	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		606224
23	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		636472
24	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		648661
25	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		796513
26	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		797821
27	Frolov K.A. (Murderface_)	134	0	138	2024-09-23 14:49:59		820572
28	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		930111
29	Slavutinskij V.V. (Vasilko)	454	0	5	2024-04-22 17:26:35		1042175
30	Slavutinskij V.V. (Vasilko)	454	0	7	2024-04-22 17:26:21		1042176
31	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1071332
32	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1097852
33	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		1111484
34	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1177527
35	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1180840
36	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1183230
37	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1215895
38	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1268157
39	Rudikov E. (cubie)	135	0	138	2023-10-31 17:27:54		1292734
40	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1609312
41	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1713300
42	Koptel'tsev V. (selber)	20	122	237	2022-11-06 21:16:51		1809465
43	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		1848674
44	Lukov D.R. (Gendalf)	245	0	90	2022-07-21 11:18:50		1965583
45	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2112164
46	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2363921
47	Fedevych V.I. (labuch_fedev)	37	65	221	2021-07-20 17:09:05		2492273
48	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2626627
49	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2668813
50	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2672561
51	Kozharinov A. (bubala)	211	0	10	2020-09-30 09:55:07		2914627
52	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		2981990
53	Koptel'tsev V. (selber)	20	122	259	2020-06-24 00:22:07		3056320
54	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		3121274
55	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		3129245
56	Fedevych V.I. (labuch_fedev)	37	65	226	2020-04-06 22:22:48		3168759
57	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3192486
58	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3502876
59	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3530158
60	Romanov K.Yu. (kostik)	311	0	12	2019-07-25 08:42:10		3538220
61	Kordyum A. (alko58)	229	0	12	2019-07-12 15:58:52		3556503
62	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3600582
63	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3740557
64	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3838825
65	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3842006
66	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3984197
67	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		4044744
68	Voevutskij S.A. (SergLK)	217	0	45	2018-07-01 13:19:14		4098103
69	Zyrin V.E. (Vezyr)	545	0	29	2018-05-29 14:14:19		4145568
70	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4237634
71	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4241543
72	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4241622
73	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4264252
74	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4278409
75	F (uff)	65	25	95	2018-01-22 15:57:03		4328345
76	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4380013
77	Kordyum A. (alko58)	229	0	101	2017-11-21 18:18:43		4417483
78	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4419245
79	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4420313
80	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4458028
81	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4485145
82	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4518207
83	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4594852
84	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4641397
85	Vorob'ev E.V. (Johnnymnemonic)	162	0	138	2017-06-16 09:15:49		4645546
86	F (uff)	65	25	185	2017-06-01 10:27:49		4667074
87	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4706947
88	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4768838
89	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		5003742
90	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		5039215
91	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		5118438
92	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5248773
93	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5290873
94	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5460293
95	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5491981
96	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5525980
97	Fomichev A.V. (Fomichev)	199	0	101	2015-10-07 11:21:04		5535341
98	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5561187
99	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5575491
100	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5577177

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