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SQL exercises

September 23, 15:10 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: 13861

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sigankov V.I. (vasilyvanc)	33	74	53	2026-09-23 14:18:31		52
2	Koptel'tsev V. (selber)	19	133	53	2026-09-20 05:35:11		4895
3	Sarkis'yan G. (gennadi_s)	14	187	53	2026-09-18 17:50:12	2026-09-19 18:45:38	1495
4	Krasovskij E.A. (pegoopik)	1	266	53	2026-09-18 15:39:39	2026-09-18 15:39:44	0
5	Krasovskij E.A. (pegoopik)	1	266	303	2026-09-11 20:13:12	2026-09-11 20:13:42	1
6	Vinogradova S.M. (Tigra1)	148	0	138	2026-09-06 14:09:20	2026-09-11 10:52:12	7003
7	Sarkis'yan G. (gennadi_s)	14	187	207	2026-09-08 14:40:13	2026-09-10 12:22:30	2742
8	Koptel'tsev V. (selber)	19	133	183	2026-09-07 08:11:06		23459
9	Komarov A.N. (Shveda Saulya)	35	68	165	2026-08-28 13:41:52		37529
10	Koptel'tsev V. (selber)	19	133	188	2026-08-21 06:33:00		48037
11	Williams B. (BW)	36	67	252	2026-07-31 13:33:49		77857
12	Williams B. (BW)	36	67	264	2026-07-29 13:21:27		80749
13	Sigankov V.I. (vasilyvanc)	33	74	216	2026-07-23 12:13:08		89457
14	Sigankov V.I. (vasilyvanc)	33	74	241	2026-07-21 14:05:13		92225
15	Zajtsev V.S. (Sleeping)	22	118	241	2026-06-16 18:38:55		142351
16	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		176781
17	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		210445
18	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		220673
19	Vyazovetskov A.S. (alex_v)	6	245	264	2026-04-22 19:15:17		221515
20	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		252227
21	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		345454
22	Lukov D.R. (Gendalf)	247	0	32	2025-12-05 01:36:21		421294
23	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		632997
24	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		867120
25	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		879309
26	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		1027162
27	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		1028470
28	Frolov K.A. (Murderface_)	135	0	138	2024-09-23 14:49:59		1051220
29	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1160759
30	Slavutinskij V.V. (Vasilko)	456	0	5	2024-04-22 17:26:35		1272824
31	Slavutinskij V.V. (Vasilko)	456	0	7	2024-04-22 17:26:21		1272824
32	Williams B. (BW)	36	67	141	2024-04-02 11:30:28		1301980
33	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1328501
34	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1342133
35	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1408175
36	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1411489
37	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1413878
38	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1446543
39	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1498806
40	Rudikov E. (cubie)	136	0	138	2023-10-31 17:27:54		1523383
41	Shkarednyj I.N. (Gosha)	37	66	198	2023-03-25 21:10:27		1839960
42	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1943949
43	Koptel'tsev V. (selber)	19	133	237	2022-11-06 21:16:51		2040114
44	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		2079322
45	Lukov D.R. (Gendalf)	247	0	90	2022-07-21 11:18:50		2196232
46	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2342813
47	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2594569
48	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2722921
49	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2857275
50	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2899462
51	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2903209
52	Kozharinov A. (bubala)	213	0	10	2020-09-30 09:55:07		3145275
53	Samarin A. (not.yet.sql.master)	147	0	112	2020-08-14 15:12:10		3212638
54	Koptel'tsev V. (selber)	19	133	259	2020-06-24 00:22:07		3286968
55	Samarin A. (not.yet.sql.master)	147	0	138	2020-05-09 21:48:04		3351922
56	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3359893
57	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3399408
58	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3423135
59	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3733524
60	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3760806
61	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3768868
62	Kordyum A. (alko58)	231	0	12	2019-07-12 15:58:52		3787152
63	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3831230
64	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3971205
65	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		4069473
66	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		4072654
67	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4214845
68	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4275392
69	Voevutskij S.A. (SergLK)	219	0	45	2018-07-01 13:19:14		4328751
70	Zyrin V.E. (Vezyr)	553	0	29	2018-05-29 14:14:19		4376216
71	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4468283
72	Shkarednyj I.N. (Gosha)	37	66	151	2018-03-23 22:38:32		4472192
73	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4472271
74	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4494900
75	Shkarednyj I.N. (Gosha)	37	66	147	2018-02-26 08:13:30		4509057
76	F (uff)	65	25	95	2018-01-22 15:57:03		4558993
77	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4610662
78	Kordyum A. (alko58)	231	0	101	2017-11-21 18:18:43		4648132
79	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4649893
80	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4650961
81	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4688676
82	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4715793
83	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4748856
84	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4825501
85	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4872046
86	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4876195
87	F (uff)	65	25	185	2017-06-01 10:27:49		4897723
88	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4937596
89	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4999487
90	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5234390
91	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5269863
92	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5349086
93	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5479422
94	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5521521
95	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5690942
96	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5722629
97	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5756628
98	Fomichev A.V. (Fomichev)	200	0	101	2015-10-07 11:21:04		5765989
99	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5791836
100	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5806140

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