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SQL exercises

October 09, 16:22 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: 13890

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		400
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		1515
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		13408
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		46571
16	Komarov A.N. (Shveda Saulya)	35	68	165	2026-08-28 13:41:52		60641
17	Koptel'tsev V. (selber)	19	133	188	2026-08-21 06:33:00		71149
18	Williams B. (BW)	36	67	252	2026-07-31 13:33:49		100969
19	Williams B. (BW)	36	67	264	2026-07-29 13:21:27		103861
20	Sigankov V.I. (vasilyvanc)	33	74	216	2026-07-23 12:13:08		112569
21	Sigankov V.I. (vasilyvanc)	33	74	241	2026-07-21 14:05:13		115337
22	Zajtsev V.S. (Sleeping)	22	118	241	2026-06-16 18:38:55		165463
23	Chernov D.V. (Kursist)	3	262	241	2026-05-23 20:49:50		199893
24	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		233557
25	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		243785
26	Vyazovetskov A.S. (alex_v)	6	245	264	2026-04-22 19:15:17		244627
27	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		275339
28	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		368566
29	Lukov D.R. (Gendalf)	247	0	32	2025-12-05 01:36:21		444406
30	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		656109
31	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		890232
32	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		902421
33	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		1050274
34	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		1051582
35	Frolov K.A. (Murderface_)	136	0	138	2024-09-23 14:49:59		1074332
36	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1183871
37	Slavutinskij V.V. (Vasilko)	456	0	5	2024-04-22 17:26:35		1295936
38	Slavutinskij V.V. (Vasilko)	456	0	7	2024-04-22 17:26:21		1295936
39	Williams B. (BW)	36	67	141	2024-04-02 11:30:28		1325092
40	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1351613
41	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1365245
42	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1431287
43	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1434601
44	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1436990
45	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1469655
46	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1521918
47	Rudikov E. (cubie)	137	0	138	2023-10-31 17:27:54		1546495
48	Shkarednyj I.N. (Gosha)	37	66	198	2023-03-25 21:10:27		1863072
49	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1967061
50	Koptel'tsev V. (selber)	19	133	237	2022-11-06 21:16:51		2063226
51	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		2102434
52	Lukov D.R. (Gendalf)	247	0	90	2022-07-21 11:18:50		2219344
53	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2365925
54	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2617681
55	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2746033
56	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2880387
57	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2922574
58	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2926321
59	Kozharinov A. (bubala)	213	0	10	2020-09-30 09:55:07		3168387
60	Samarin A. (not.yet.sql.master)	148	0	112	2020-08-14 15:12:10		3235750
61	Koptel'tsev V. (selber)	19	133	259	2020-06-24 00:22:07		3310080
62	Samarin A. (not.yet.sql.master)	148	0	138	2020-05-09 21:48:04		3375034
63	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3383005
64	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3422520
65	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3446247
66	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3756636
67	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3783918
68	Romanov K.Yu. (kostik)	313	0	12	2019-07-25 08:42:10		3791980
69	Kordyum A. (alko58)	231	0	12	2019-07-12 15:58:52		3810264
70	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3854342
71	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3994317
72	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		4092585
73	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		4095766
74	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4237957
75	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4298504
76	Voevutskij S.A. (SergLK)	219	0	45	2018-07-01 13:19:14		4351863
77	Zyrin V.E. (Vezyr)	553	0	29	2018-05-29 14:14:19		4399328
78	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4491395
79	Shkarednyj I.N. (Gosha)	37	66	151	2018-03-23 22:38:32		4495304
80	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4495383
81	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4518012
82	Shkarednyj I.N. (Gosha)	37	66	147	2018-02-26 08:13:30		4532169
83	F (uff)	65	25	95	2018-01-22 15:57:03		4582105
84	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4633774
85	Kordyum A. (alko58)	231	0	101	2017-11-21 18:18:43		4671244
86	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4673005
87	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4674073
88	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4711788
89	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4738905
90	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4771968
91	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4848613
92	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4895158
93	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4899307
94	F (uff)	65	25	185	2017-06-01 10:27:49		4920835
95	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4960708
96	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		5022599
97	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5257502
98	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5292975
99	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5372198
100	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5502534

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