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SQL exercises

October 09, 13:07 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: 13889

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Safronov P.A. (Paulus73)	124	4	140	2026-10-09 09:42:14		205
2	Safronov P.A. (Paulus73)	124	4	142	2026-10-08 11:19:23	2026-10-08 22:44:52	685
3	Sarkis'yan G. (gennadi_s)	14	187	208	2026-10-08 15:07:00		1320
4	Safronov P.A. (Paulus73)	124	4	139	2026-10-08 10:01:07	2026-10-08 11:01:43	61
5	Safronov P.A. (Paulus73)	124	4	138	2026-10-06 09:41:15	2026-10-07 02:54:18	1033
6	Filippkin D.V. (_dimon_)	2	262	240	2026-10-05 14:13:38	2026-10-06 15:58:40	1545
7	Safronov P.A. (Paulus73)	124	4	53	2026-10-05 09:54:21	2026-10-05 12:48:36	174
8	Vinogradova S.M. (Tigra1)	125	4	140	2026-10-04 15:59:22	2026-10-05 11:25:11	1166
9	Vinogradova S.M. (Tigra1)	125	4	139	2026-10-03 08:58:36	2026-10-03 17:36:51	518
10	Filippkin D.V. (_dimon_)	2	262	53	2026-10-02 10:34:22	2026-10-02 13:34:56	181
11	Kostomarov A.V. (al29)	5	247	53	2026-09-30 08:53:59		13213
12	Vinogradova S.M. (Tigra1)	125	4	53	2026-09-27 16:28:34	2026-09-27 18:57:12	149
13	Sigankov V.I. (vasilyvanc)	33	74	53	2026-09-23 14:18:31	2026-09-27 11:56:35	5618
14	Sarkis'yan G. (gennadi_s)	14	187	303	2026-09-26 14:18:02	2026-09-26 14:40:37	23
15	Koptel'tsev V. (selber)	19	133	183	2026-09-07 08:11:06		46376
16	Komarov A.N. (Shveda Saulya)	35	68	165	2026-08-28 13:41:52		60446
17	Koptel'tsev V. (selber)	19	133	188	2026-08-21 06:33:00		70954
18	Williams B. (BW)	36	67	252	2026-07-31 13:33:49		100774
19	Williams B. (BW)	36	67	264	2026-07-29 13:21:27		103666
20	Sigankov V.I. (vasilyvanc)	33	74	216	2026-07-23 12:13:08		112374
21	Sigankov V.I. (vasilyvanc)	33	74	241	2026-07-21 14:05:13		115142
22	Zajtsev V.S. (Sleeping)	22	118	241	2026-06-16 18:38:55		165268
23	Chernov D.V. (Kursist)	3	262	241	2026-05-23 20:49:50		199698
24	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		233362
25	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		243590
26	Vyazovetskov A.S. (alex_v)	6	245	264	2026-04-22 19:15:17		244432
27	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		275144
28	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		368371
29	Lukov D.R. (Gendalf)	247	0	32	2025-12-05 01:36:21		444211
30	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		655914
31	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		890037
32	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		902226
33	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		1050079
34	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		1051387
35	Frolov K.A. (Murderface_)	136	0	138	2024-09-23 14:49:59		1074137
36	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1183676
37	Slavutinskij V.V. (Vasilko)	456	0	5	2024-04-22 17:26:35		1295741
38	Slavutinskij V.V. (Vasilko)	456	0	7	2024-04-22 17:26:21		1295741
39	Williams B. (BW)	36	67	141	2024-04-02 11:30:28		1324897
40	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1351418
41	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1365050
42	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1431092
43	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1434406
44	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1436795
45	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1469460
46	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1521723
47	Rudikov E. (cubie)	137	0	138	2023-10-31 17:27:54		1546299
48	Shkarednyj I.N. (Gosha)	37	66	198	2023-03-25 21:10:27		1862877
49	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1966866
50	Koptel'tsev V. (selber)	19	133	237	2022-11-06 21:16:51		2063031
51	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		2102239
52	Lukov D.R. (Gendalf)	247	0	90	2022-07-21 11:18:50		2219149
53	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2365730
54	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2617486
55	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2745838
56	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2880192
57	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2922379
58	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2926126
59	Kozharinov A. (bubala)	213	0	10	2020-09-30 09:55:07		3168192
60	Samarin A. (not.yet.sql.master)	148	0	112	2020-08-14 15:12:10		3235555
61	Koptel'tsev V. (selber)	19	133	259	2020-06-24 00:22:07		3309885
62	Samarin A. (not.yet.sql.master)	148	0	138	2020-05-09 21:48:04		3374839
63	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3382810
64	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3422325
65	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3446052
66	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3756441
67	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3783723
68	Romanov K.Yu. (kostik)	313	0	12	2019-07-25 08:42:10		3791785
69	Kordyum A. (alko58)	231	0	12	2019-07-12 15:58:52		3810069
70	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3854147
71	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3994122
72	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		4092390
73	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		4095571
74	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4237762
75	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4298309
76	Voevutskij S.A. (SergLK)	219	0	45	2018-07-01 13:19:14		4351668
77	Zyrin V.E. (Vezyr)	553	0	29	2018-05-29 14:14:19		4399133
78	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4491200
79	Shkarednyj I.N. (Gosha)	37	66	151	2018-03-23 22:38:32		4495109
80	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4495188
81	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4517817
82	Shkarednyj I.N. (Gosha)	37	66	147	2018-02-26 08:13:30		4531974
83	F (uff)	65	25	95	2018-01-22 15:57:03		4581910
84	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4633579
85	Kordyum A. (alko58)	231	0	101	2017-11-21 18:18:43		4671049
86	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4672810
87	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4673878
88	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4711593
89	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4738710
90	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4771773
91	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4848418
92	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4894962
93	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4899112
94	F (uff)	65	25	185	2017-06-01 10:27:49		4920640
95	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4960513
96	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		5022404
97	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5257307
98	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5292780
99	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5372003
100	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5502339

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