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SQL exercises

September 08, 16:08 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: 15169

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	14	184	207	2026-09-08 14:40:13		88
2	Koptel'tsev V. (selber)	19	133	183	2026-09-07 08:11:06		1918
3	Vinogradova S.M. (Tigra1)	148	0	138	2026-09-06 14:09:20		2999
4	Vinogradova S.M. (Tigra1)	148	0	137	2026-08-30 14:15:52	2026-08-31 22:19:52	1924
5	Vinogradova S.M. (Tigra1)	148	0	136	2026-08-28 10:40:33	2026-08-29 10:38:18	1438
6	Komarov A.N. (Shveda Saulya)	35	68	165	2026-08-28 13:41:52		15987
7	Vinogradova S.M. (Tigra1)	148	0	135	2026-08-26 09:13:14	2026-08-26 13:14:03	241
8	Koptel'tsev V. (selber)	19	133	188	2026-08-21 06:33:00		26496
9	Williams B. (BW)	36	67	252	2026-07-31 13:33:49		56315
10	Williams B. (BW)	36	67	264	2026-07-29 13:21:27		59207
11	Sigankov V.I. (vasilyvanc)	33	74	216	2026-07-23 12:13:08		67916
12	Sigankov V.I. (vasilyvanc)	33	74	241	2026-07-21 14:05:13		70683
13	Zajtsev V.S. (Sleeping)	22	118	241	2026-06-16 18:38:55		120810
14	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		155239
15	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		188903
16	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		199131
17	Vyazovetskov A.S. (alex_v)	6	245	264	2026-04-22 19:15:17		199973
18	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		230685
19	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		323912
20	Lukov D.R. (Gendalf)	247	0	32	2025-12-05 01:36:21		399752
21	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		611456
22	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		845579
23	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		857767
24	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		1005620
25	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		1006928
26	Frolov K.A. (Murderface_)	135	0	138	2024-09-23 14:49:59		1029679
27	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1139217
28	Slavutinskij V.V. (Vasilko)	455	0	5	2024-04-22 17:26:35		1251282
29	Slavutinskij V.V. (Vasilko)	455	0	7	2024-04-22 17:26:21		1251282
30	Williams B. (BW)	36	67	141	2024-04-02 11:30:28		1280438
31	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1306959
32	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1320591
33	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1386633
34	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1389947
35	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1392337
36	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1425001
37	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1477264
38	Rudikov E. (cubie)	136	0	138	2023-10-31 17:27:54		1501841
39	Shkarednyj I.N. (Gosha)	37	66	198	2023-03-25 21:10:27		1818418
40	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1922407
41	Koptel'tsev V. (selber)	19	133	237	2022-11-06 21:16:51		2018572
42	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		2057780
43	Lukov D.R. (Gendalf)	247	0	90	2022-07-21 11:18:50		2174690
44	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2321271
45	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2573028
46	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2701380
47	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2835734
48	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2877920
49	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2881667
50	Kozharinov A. (bubala)	213	0	10	2020-09-30 09:55:07		3123734
51	Samarin A. (not.yet.sql.master)	147	0	112	2020-08-14 15:12:10		3191096
52	Koptel'tsev V. (selber)	19	133	259	2020-06-24 00:22:07		3265427
53	Samarin A. (not.yet.sql.master)	147	0	138	2020-05-09 21:48:04		3330381
54	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3338351
55	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3377866
56	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3401593
57	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3711982
58	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3739264
59	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3747326
60	Kordyum A. (alko58)	231	0	12	2019-07-12 15:58:52		3765610
61	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3809688
62	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3949663
63	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		4047931
64	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		4051112
65	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4193303
66	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4253850
67	Voevutskij S.A. (SergLK)	219	0	45	2018-07-01 13:19:14		4307209
68	Zyrin V.E. (Vezyr)	553	0	29	2018-05-29 14:14:19		4354674
69	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4446741
70	Shkarednyj I.N. (Gosha)	37	66	151	2018-03-23 22:38:32		4450650
71	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4450729
72	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4473358
73	Shkarednyj I.N. (Gosha)	37	66	147	2018-02-26 08:13:30		4487515
74	F (uff)	65	25	95	2018-01-22 15:57:03		4537452
75	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4589120
76	Kordyum A. (alko58)	231	0	101	2017-11-21 18:18:43		4626590
77	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4628351
78	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4629419
79	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4667134
80	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4694251
81	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4727314
82	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4803959
83	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4850504
84	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4854653
85	F (uff)	65	25	185	2017-06-01 10:27:49		4876181
86	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4916054
87	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4977945
88	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5212848
89	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5248321
90	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5327545
91	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5457880
92	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5499979
93	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5669400
94	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5701087
95	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5735086
96	Fomichev A.V. (Fomichev)	200	0	101	2015-10-07 11:21:04		5744448
97	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5770294
98	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5784598
99	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5786284
100	Varenikov D.M. (Dmitriy Varenikov)	20	130	263	2015-08-31 08:35:37		5797893

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