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SQL exercises

October 02, 10:32 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: 13883

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Kostomarov A.V. (al29)	5	247	53	2026-09-30 08:53:59		2978
2	Vinogradova S.M. (Tigra1)	148	0	53	2026-09-27 16:28:34	2026-09-27 18:57:12	149
3	Sigankov V.I. (vasilyvanc)	33	74	53	2026-09-23 14:18:31	2026-09-27 11:56:35	5618
4	Sarkis'yan G. (gennadi_s)	14	187	303	2026-09-26 14:18:02	2026-09-26 14:40:37	23
5	Koptel'tsev V. (selber)	19	133	53	2026-09-20 05:35:11	2026-09-23 22:59:05	5364
6	Sarkis'yan G. (gennadi_s)	14	187	53	2026-09-18 17:50:12	2026-09-19 18:45:38	1495
7	Koptel'tsev V. (selber)	19	133	183	2026-09-07 08:11:06		36141
8	Komarov A.N. (Shveda Saulya)	35	68	165	2026-08-28 13:41:52		50211
9	Koptel'tsev V. (selber)	19	133	188	2026-08-21 06:33:00		60719
10	Williams B. (BW)	36	67	252	2026-07-31 13:33:49		90539
11	Williams B. (BW)	36	67	264	2026-07-29 13:21:27		93431
12	Sigankov V.I. (vasilyvanc)	33	74	216	2026-07-23 12:13:08		102139
13	Sigankov V.I. (vasilyvanc)	33	74	241	2026-07-21 14:05:13		104907
14	Zajtsev V.S. (Sleeping)	22	118	241	2026-06-16 18:38:55		155034
15	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		189463
16	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		223127
17	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		233355
18	Vyazovetskov A.S. (alex_v)	6	245	264	2026-04-22 19:15:17		234197
19	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		264909
20	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		358136
21	Lukov D.R. (Gendalf)	247	0	32	2025-12-05 01:36:21		433976
22	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		645679
23	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		879803
24	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		891991
25	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		1039844
26	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		1041152
27	Frolov K.A. (Murderface_)	135	0	138	2024-09-23 14:49:59		1063902
28	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1173441
29	Slavutinskij V.V. (Vasilko)	456	0	5	2024-04-22 17:26:35		1285506
30	Slavutinskij V.V. (Vasilko)	456	0	7	2024-04-22 17:26:21		1285506
31	Williams B. (BW)	36	67	141	2024-04-02 11:30:28		1314662
32	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1341183
33	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1354815
34	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1420857
35	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1424171
36	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1426560
37	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1459225
38	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1511488
39	Rudikov E. (cubie)	136	0	138	2023-10-31 17:27:54		1536065
40	Shkarednyj I.N. (Gosha)	37	66	198	2023-03-25 21:10:27		1852642
41	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1956631
42	Koptel'tsev V. (selber)	19	133	237	2022-11-06 21:16:51		2052796
43	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		2092004
44	Lukov D.R. (Gendalf)	247	0	90	2022-07-21 11:18:50		2208914
45	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2355495
46	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2607251
47	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2735603
48	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2869957
49	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2912144
50	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2915891
51	Kozharinov A. (bubala)	213	0	10	2020-09-30 09:55:07		3157957
52	Samarin A. (not.yet.sql.master)	147	0	112	2020-08-14 15:12:10		3225320
53	Koptel'tsev V. (selber)	19	133	259	2020-06-24 00:22:07		3299650
54	Samarin A. (not.yet.sql.master)	147	0	138	2020-05-09 21:48:04		3364604
55	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3372575
56	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3412090
57	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3435817
58	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3746206
59	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3773488
60	Romanov K.Yu. (kostik)	313	0	12	2019-07-25 08:42:10		3781550
61	Kordyum A. (alko58)	231	0	12	2019-07-12 15:58:52		3799834
62	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3843912
63	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3983887
64	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		4082155
65	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		4085336
66	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4227527
67	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4288074
68	Voevutskij S.A. (SergLK)	219	0	45	2018-07-01 13:19:14		4341433
69	Zyrin V.E. (Vezyr)	553	0	29	2018-05-29 14:14:19		4388898
70	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4480965
71	Shkarednyj I.N. (Gosha)	37	66	151	2018-03-23 22:38:32		4484874
72	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4484953
73	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4507582
74	Shkarednyj I.N. (Gosha)	37	66	147	2018-02-26 08:13:30		4521739
75	F (uff)	65	25	95	2018-01-22 15:57:03		4571675
76	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4623344
77	Kordyum A. (alko58)	231	0	101	2017-11-21 18:18:43		4660814
78	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4662575
79	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4663643
80	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4701358
81	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4728475
82	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4761538
83	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4838183
84	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4884728
85	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4888877
86	F (uff)	65	25	185	2017-06-01 10:27:49		4910405
87	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4950278
88	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		5012169
89	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5247072
90	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5282545
91	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5361768
92	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5492104
93	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5534203
94	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5703624
95	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5735311
96	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5769310
97	Fomichev A.V. (Fomichev)	200	0	101	2015-10-07 11:21:04		5778671
98	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5804518
99	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5818822
100	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5820508

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