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SQL exercises

December 01, 02:02 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: 15321

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	18	131	188	2025-11-30 13:49:15		733
2	Sarkis'yan G. (gennadi_s)	18	131	187	2025-11-21 15:27:25	2025-11-25 14:09:56	5683
3	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		205969
4	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		327690
5	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		401746
6	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		409844
7	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		440092
8	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		452281
9	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		600134
10	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		601442
11	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		624192
12	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		651633
13	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		733731
14	Slavutinskij V.V. (Vasilko)	447	0	5	2024-04-22 17:26:35		845796
15	Slavutinskij V.V. (Vasilko)	447	0	7	2024-04-22 17:26:21		845796
16	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		874952
17	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		901473
18	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		915104
19	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		981147
20	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		984461
21	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		986850
22	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1019515
23	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		1064691
24	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1071778
25	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1096354
26	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1341386
27	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1378942
28	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1412932
29	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1516921
30	Koptel'tsev V. (selber)	21	116	237	2022-11-06 21:16:51		1613085
31	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1652294
32	Lukov D.R. (Gendalf)	241	0	90	2022-07-21 11:18:50		1769203
33	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1915785
34	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2167541
35	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2295893
36	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2430247
37	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2472434
38	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2476181
39	Kozharinov A. (bubala)	207	0	10	2020-09-30 09:55:07		2718247
40	Samarin A. (not.yet.sql.master)	141	0	112	2020-08-14 15:12:10		2785610
41	Koptel'tsev V. (selber)	21	116	259	2020-06-24 00:22:07		2859940
42	Samarin A. (not.yet.sql.master)	141	0	138	2020-05-09 21:48:04		2924894
43	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2932865
44	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2972380
45	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2996107
46	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3306496
47	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3333778
48	Romanov K.Yu. (kostik)	307	0	12	2019-07-25 08:42:10		3341840
49	Kordyum A. (alko58)	225	0	12	2019-07-12 15:58:52		3360123
50	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3404202
51	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3544177
52	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3642445
53	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3645626
54	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3787817
55	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3848364
56	Voevutskij S.A. (SergLK)	213	0	45	2018-07-01 13:19:14		3901723
57	Zyrin V.E. (Vezyr)	539	0	29	2018-05-29 14:14:19		3949188
58	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		4041255
59	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		4045164
60	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4045242
61	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4067872
62	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		4082029
63	F (uff)	65	25	95	2018-01-22 15:57:03		4131965
64	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4183634
65	Kordyum A. (alko58)	225	0	101	2017-11-21 18:18:43		4221104
66	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4222865
67	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4223933
68	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4261648
69	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4288765
70	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4321828
71	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4398473
72	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4445017
73	Vorob'ev E.V. (Johnnymnemonic)	161	0	138	2017-06-16 09:15:49		4449166
74	F (uff)	65	25	185	2017-06-01 10:27:49		4470694
75	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4510567
76	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4572458
77	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4807362
78	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4842835
79	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4922058
80	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5052394
81	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5094493
82	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5263913
83	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5295601
84	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5329600
85	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5338961
86	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5364808
87	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5379111
88	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5380797
89	Varenikov D.M. (Dmitriy Varenikov)	19	128	263	2015-08-31 08:35:37		5392407
90	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5395978
91	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5399309
92	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5442994
93	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5444261
94	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5452823
95	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5462553
96	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5471180
97	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5701619
98	Skorohod I. (Dracul4ik)	78	15	252	2015-01-27 11:56:41		5703246
99	Sysoev A.V. (Sysa)	49	39	143	2014-12-25 01:16:19		5751406
100	Grishin (alvigr)	79	15	185	2014-12-05 11:56:29		5779566

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