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SQL exercises

December 18, 13:41 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: 15356

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Kostomarov A.V. (al29)	5	247	88	2025-12-16 13:08:02	2025-12-16 14:28:09	80
2	Sarkis'yan G. (gennadi_s)	17	134	188	2025-11-30 13:49:15	2025-12-15 18:47:38	21898
3	Petrov Y. (YuriPetrov)	37	64	88	2025-12-10 15:24:13	2025-12-10 15:35:04	11
4	Kostomarov A.V. (al29)	5	247	32	2025-12-08 12:39:14	2025-12-09 14:51:32	1572
5	Petrov Y. (YuriPetrov)	37	64	32	2025-12-09 02:20:04	2025-12-09 03:54:09	94
6	Petrov Y. (YuriPetrov)	37	64	5	2025-12-08 14:40:28	2025-12-08 15:14:01	34
7	Kostomarov A.V. (al29)	5	247	5	2025-12-05 14:04:47	2025-12-08 10:54:29	4130
8	Lukov D.R. (Gendalf)	242	0	32	2025-12-05 01:36:21		19446
9	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		231149
10	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		352869
11	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		426925
12	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		435024
13	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		465272
14	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		477460
15	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		625313
16	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		626621
17	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		649372
18	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		676812
19	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		758911
20	Slavutinskij V.V. (Vasilko)	448	0	5	2024-04-22 17:26:35		870975
21	Slavutinskij V.V. (Vasilko)	448	0	7	2024-04-22 17:26:21		870976
22	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		900131
23	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		926652
24	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		940284
25	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1006326
26	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1009640
27	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1012030
28	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1044695
29	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		1089870
30	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1096957
31	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1121534
32	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1366566
33	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1404122
34	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1438111
35	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1542100
36	Koptel'tsev V. (selber)	21	116	237	2022-11-06 21:16:51		1638265
37	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1677474
38	Lukov D.R. (Gendalf)	242	0	90	2022-07-21 11:18:50		1794383
39	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1940964
40	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2192721
41	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2321073
42	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2455427
43	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2497613
44	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2501361
45	Kozharinov A. (bubala)	207	0	10	2020-09-30 09:55:07		2743427
46	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		2810790
47	Koptel'tsev V. (selber)	21	116	259	2020-06-24 00:22:07		2885120
48	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		2950074
49	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2958045
50	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2997559
51	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3021286
52	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3331676
53	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3358958
54	Romanov K.Yu. (kostik)	307	0	12	2019-07-25 08:42:10		3367020
55	Kordyum A. (alko58)	225	0	12	2019-07-12 15:58:52		3385303
56	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3429382
57	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3569357
58	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3667625
59	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3670805
60	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3812996
61	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3873544
62	Voevutskij S.A. (SergLK)	214	0	45	2018-07-01 13:19:14		3926903
63	Zyrin V.E. (Vezyr)	540	0	29	2018-05-29 14:14:19		3974368
64	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		4066434
65	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		4070343
66	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4070422
67	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4093052
68	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		4107208
69	F (uff)	65	25	95	2018-01-22 15:57:03		4157145
70	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4208813
71	Kordyum A. (alko58)	225	0	101	2017-11-21 18:18:43		4246283
72	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4248044
73	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4249113
74	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4286828
75	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4313944
76	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4347007
77	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4423652
78	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4470197
79	Vorob'ev E.V. (Johnnymnemonic)	161	0	138	2017-06-16 09:15:49		4474346
80	F (uff)	65	25	185	2017-06-01 10:27:49		4495874
81	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4535747
82	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4597638
83	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4832542
84	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4868015
85	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4947238
86	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5077573
87	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5119672
88	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5289093
89	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5320781
90	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5354779
91	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5364141
92	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5389987
93	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5404291
94	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5405977
95	Varenikov D.M. (Dmitriy Varenikov)	19	128	263	2015-08-31 08:35:37		5417586
96	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5421157
97	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5424488
98	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5468174
99	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5469441
100	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5478003

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