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SQL exercises

August 04, 09:40 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: 15140

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Koptel'tsev V. (selber)	19	133	198	2026-07-12 02:54:38	2026-07-31 20:31:37	28417
2	Williams B. (BW)	35	67	252	2026-07-31 13:33:49		5527
3	Williams B. (BW)	35	67	236	2026-07-29 13:21:56	2026-07-31 13:32:08	2890
4	Vyazovetskov A.S. (alex_v)	6	245	181	2026-07-29 14:43:59	2026-07-30 18:38:40	1675
5	Williams B. (BW)	35	67	264	2026-07-29 13:21:27		8419
6	Williams B. (BW)	35	67	308	2026-07-23 14:59:30	2026-07-29 13:19:06	8540
7	Sarkis'yan G. (gennadi_s)	15	177	203	2026-07-28 14:11:50	2026-07-28 15:38:56	87
8	Filippkin D.V. (_dimon_)	3	259	264	2026-07-23 15:54:45	2026-07-23 15:55:46	1
9	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04	2026-07-23 15:27:06	747609
10	Sigankov V.I. (vasilyvanc)	33	74	216	2026-07-23 12:13:08		17127
11	Sigankov V.I. (vasilyvanc)	33	74	241	2026-07-21 14:05:13		19895
12	Zajtsev V.S. (Sleeping)	22	118	241	2026-06-16 18:38:55		70022
13	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		104451
14	Komarov A.N. (Shveda Saulya)	37	65	160	2026-05-09 13:24:21		125056
15	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		138115
16	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		148343
17	Vyazovetskov A.S. (alex_v)	6	245	264	2026-04-22 19:15:17		149185
18	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		179897
19	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		273124
20	Lukov D.R. (Gendalf)	247	0	32	2025-12-05 01:36:21		348964
21	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		560668
22	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		794791
23	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		806979
24	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		954832
25	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		956140
26	Frolov K.A. (Murderface_)	135	0	138	2024-09-23 14:49:59		978891
27	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1088429
28	Slavutinskij V.V. (Vasilko)	455	0	5	2024-04-22 17:26:35		1200494
29	Slavutinskij V.V. (Vasilko)	455	0	7	2024-04-22 17:26:21		1200494
30	Williams B. (BW)	35	67	141	2024-04-02 11:30:28		1229650
31	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1256171
32	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1269803
33	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1335845
34	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1339159
35	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1341548
36	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1374213
37	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1426476
38	Rudikov E. (cubie)	136	0	138	2023-10-31 17:27:54		1451053
39	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1767630
40	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1871619
41	Koptel'tsev V. (selber)	19	133	237	2022-11-06 21:16:51		1967784
42	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		2006992
43	Lukov D.R. (Gendalf)	247	0	90	2022-07-21 11:18:50		2123902
44	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2270483
45	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2522239
46	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2650591
47	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2784945
48	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2827132
49	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2830879
50	Kozharinov A. (bubala)	213	0	10	2020-09-30 09:55:07		3072945
51	Samarin A. (not.yet.sql.master)	147	0	112	2020-08-14 15:12:10		3140308
52	Koptel'tsev V. (selber)	19	133	259	2020-06-24 00:22:07		3214638
53	Samarin A. (not.yet.sql.master)	147	0	138	2020-05-09 21:48:04		3279592
54	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3287563
55	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3327078
56	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3350805
57	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3661194
58	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3688476
59	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3696538
60	Kordyum A. (alko58)	231	0	12	2019-07-12 15:58:52		3714822
61	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3758900
62	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3898875
63	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		3997143
64	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		4000324
65	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4142515
66	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4203062
67	Voevutskij S.A. (SergLK)	219	0	45	2018-07-01 13:19:14		4256421
68	Zyrin V.E. (Vezyr)	552	0	29	2018-05-29 14:14:19		4303886
69	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4395953
70	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4399862
71	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4399941
72	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4422570
73	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4436727
74	F (uff)	65	25	95	2018-01-22 15:57:03		4486663
75	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4538332
76	Kordyum A. (alko58)	231	0	101	2017-11-21 18:18:43		4575802
77	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4577563
78	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4578631
79	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4616346
80	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4643463
81	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4676526
82	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4753171
83	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4799716
84	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4803865
85	F (uff)	65	25	185	2017-06-01 10:27:49		4825393
86	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4865266
87	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4927157
88	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5162060
89	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5197533
90	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5276756
91	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5407092
92	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5449191
93	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5618612
94	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5650299
95	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5684298
96	Fomichev A.V. (Fomichev)	200	0	101	2015-10-07 11:21:04		5693659
97	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5719506
98	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5733810
99	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5735496
100	Varenikov D.M. (Dmitriy Varenikov)	20	130	263	2015-08-31 08:35:37		5747105

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