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SQL exercises

October 09, 23:25 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: 13881

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		823
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	185	208	2026-10-08 15:07:00		1938
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	260	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	260	53	2026-10-02 10:34:22	2026-10-02 13:34:56	181
11	Kostomarov A.V. (al29)	5	245	53	2026-09-30 08:53:59		13831
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	72	53	2026-09-23 14:18:31	2026-09-27 11:56:35	5618
14	Sarkis'yan G. (gennadi_s)	14	185	303	2026-09-26 14:18:02	2026-09-26 14:40:37	23
15	Koptel'tsev V. (selber)	18	133	183	2026-09-07 08:11:06		46994
16	Komarov A.N. (Shveda Saulya)	35	68	165	2026-08-28 13:41:52		61063
17	Koptel'tsev V. (selber)	18	133	188	2026-08-21 06:33:00		71572
18	Williams B. (BW)	36	65	252	2026-07-31 13:33:49		101392
19	Williams B. (BW)	36	65	264	2026-07-29 13:21:27		104284
20	Sigankov V.I. (vasilyvanc)	33	72	216	2026-07-23 12:13:08		112992
21	Sigankov V.I. (vasilyvanc)	33	72	241	2026-07-21 14:05:13		115760
22	Zajtsev V.S. (Sleeping)	22	116	241	2026-06-16 18:38:55		165886
23	Chernov D.V. (Kursist)	3	260	241	2026-05-23 20:49:50		200316
24	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		233980
25	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		244208
26	Vyazovetskov A.S. (alex_v)	6	243	264	2026-04-22 19:15:17		245050
27	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		275762
28	Petrov Y. (YuriPetrov)	32	76	210	2026-01-26 17:36:12		368989
29	Lukov D.R. (Gendalf)	247	0	32	2025-12-05 01:36:21		444829
30	Chebykin D. (GriGrim)	39	60	210	2025-07-11 01:12:59		656532
31	Chuvstvin M. (chuvstvinmaxim)	92	9	141	2025-01-29 11:09:56		890655
32	Chuvstvin M. (chuvstvinmaxim)	92	9	258	2025-01-21 00:01:28		902844
33	Lyubomudrov R.G. (born2tilt)	73	20	162	2024-10-10 07:48:40		1050697
34	Lyubomudrov R.G. (born2tilt)	73	20	202	2024-10-09 10:00:37		1052005
35	Frolov K.A. (Murderface_)	136	0	138	2024-09-23 14:49:59		1074755
36	Zajtsev V.S. (Sleeping)	22	116	164	2024-07-09 13:11:22		1184294
37	Slavutinskij V.V. (Vasilko)	456	0	5	2024-04-22 17:26:35		1296359
38	Slavutinskij V.V. (Vasilko)	456	0	7	2024-04-22 17:26:21		1296359
39	Williams B. (BW)	36	65	141	2024-04-02 11:30:28		1325515
40	Kukushkin S.A. (smog)	16	151	194	2024-03-15 01:29:39		1352036
41	Latyntsev N.G. (aks_nsk)	54	35	253	2024-03-05 14:17:51		1365667
42	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1431710
43	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1435024
44	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1437413
45	Nikolaenko A.V. (Shadow77)	82	14	135	2023-12-24 02:07:10		1470078
46	Boiko D. (Angellore)	9	231	262	2023-11-17 19:04:36		1522341
47	Rudikov E. (cubie)	137	0	138	2023-10-31 17:27:54		1546917
48	Shkarednyj I.N. (Gosha)	37	64	198	2023-03-25 21:10:27		1863495
49	Latyntsev N.G. (aks_nsk)	54	35	255	2023-01-12 16:01:39		1967484
50	Koptel'tsev V. (selber)	18	133	237	2022-11-06 21:16:51		2063648
51	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		2102857
52	Lukov D.R. (Gendalf)	247	0	90	2022-07-21 11:18:50		2219767
53	Pavlov A.V. (Anton)	59	29	141	2022-04-10 16:17:39		2366348
54	Sigankov V.I. (vasilyvanc)	33	72	161	2021-10-17 20:21:01		2618104
55	Fedevych V.I. (labuch_fedev)	38	63	221	2021-07-20 17:09:05		2746456
56	Pusev D.V. (Pusev_Denis)	19	132	234	2021-04-18 09:55:08		2880810
57	Kukushkin S.A. (smog)	16	151	12	2021-03-20 02:48:36		2922997
58	Pusev D.V. (Pusev_Denis)	19	132	159	2021-03-17 12:21:10		2926744
59	Kozharinov A. (bubala)	213	0	10	2020-09-30 09:55:07		3168810
60	Samarin A. (not.yet.sql.master)	148	0	112	2020-08-14 15:12:10		3236173
61	Koptel'tsev V. (selber)	18	133	259	2020-06-24 00:22:07		3310503
62	Samarin A. (not.yet.sql.master)	148	0	138	2020-05-09 21:48:04		3375457
63	Karasyova N.V. (vlksm)	10	223	230	2020-05-04 08:57:25		3383428
64	Fedevych V.I. (labuch_fedev)	38	63	226	2020-04-06 22:22:48		3422943
65	Pusev D.V. (Pusev_Denis)	19	132	184	2020-03-21 10:55:32		3446670
66	Fokin A. (Vizitor )	44	50	263	2019-08-18 21:46:14		3757059
67	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3784341
68	Romanov K.Yu. (kostik)	313	0	12	2019-07-25 08:42:10		3792403
69	Kordyum A. (alko58)	231	0	12	2019-07-12 15:58:52		3810686
70	Pavlov A.V. (Anton)	59	29	168	2019-06-12 01:20:21		3854765
71	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3994740
72	Kurochkin P.A. (qwrqwr)	12	209	227	2018-12-28 14:37:25		4093008
73	Grishunin M.F. (MikhailFG)	90	10	144	2018-12-26 09:36:27		4096189
74	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4238380
75	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4298927
76	Voevutskij S.A. (SergLK)	219	0	45	2018-07-01 13:19:14		4352286
77	Zyrin V.E. (Vezyr)	553	0	29	2018-05-29 14:14:19		4399751
78	Chebykin D. (GriGrim)	39	60	228	2018-03-26 15:47:45		4491818
79	Shkarednyj I.N. (Gosha)	37	64	151	2018-03-23 22:38:32		4495727
80	Boiko D. (Angellore)	9	231	229	2018-03-23 21:19:51		4495805
81	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4518435
82	Shkarednyj I.N. (Gosha)	37	64	147	2018-02-26 08:13:30		4532592
83	F (uff)	66	23	95	2018-01-22 15:57:03		4582528
84	Aliev R. (y4nzi)	27	93	259	2017-12-17 18:48:39		4634197
85	Kordyum A. (alko58)	231	0	101	2017-11-21 18:18:43		4671667
86	Zajtsev V.S. (Sleeping)	22	116	190	2017-11-20 12:57:31		4673428
87	Aliev R. (y4nzi)	27	93	257	2017-11-19 19:09:17		4674496
88	Aliev R. (y4nzi)	27	93	255	2017-10-24 14:34:21		4712211
89	Kukushkin S.A. (smog)	16	151	171	2017-10-05 18:37:27		4739328
90	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4772391
91	Grinkevich D.L. (Dmitrij Grinkevich)	23	107	115	2017-07-21 14:09:37		4849036
92	Bezhaev A.Yu. (Baser)	8	234	220	2017-06-19 06:24:54		4895580
93	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4899730
94	F (uff)	66	23	185	2017-06-01 10:27:49		4921258
95	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4961130
96	Movlyanov A.P. (Oct)	13	191	218	2017-03-22 18:23:50		5023022
97	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5257925
98	Sysoev A.V. (Sysa)	53	37	165	2016-09-16 00:07:24		5293398
99	Sysoev A.V. (Sysa)	53	37	168	2016-07-22 23:44:07		5372621
100	Karasyova N.V. (vlksm)	10	223	263	2016-04-23 11:28:43		5502957

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