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SQL exercises

April 30, 10:08 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: 15058

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Koptel'tsev V. (selber)	20	113	167	2025-04-12 13:06:32	2025-04-27 20:30:40	22044
2	Sarkis'yan G. (gennadi_s)	30	81	167	2025-04-27 13:52:39		4096
3	Sarkis'yan G. (gennadi_s)	30	81	165	2025-04-24 12:05:17	2025-04-25 11:36:46	1411
4	Sarkis'yan G. (gennadi_s)	30	81	164	2025-04-11 16:03:00	2025-04-18 15:01:09	10018
5	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		18576
6	Williams B. (BW)	34	66	303	2025-04-08 16:47:17	2025-04-17 12:24:23	12697
7	Fomichev A.V. (Fomichev)	194	0	7	2025-02-25 02:16:37		92632
8	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		100731
9	Chuvstvin M. (chuvstvinmaxim)	87	11	141	2025-01-29 11:09:56		130979
10	Chuvstvin M. (chuvstvinmaxim)	87	11	258	2025-01-21 00:01:28		143167
11	Lyubomudrov R.G. (born2tilt)	70	22	162	2024-10-10 07:48:40		291020
12	Lyubomudrov R.G. (born2tilt)	70	22	202	2024-10-09 10:00:37		292328
13	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		315079
14	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		342519
15	Zajtsev V.S. (Sleeping)	21	112	164	2024-07-09 13:11:22		424618
16	Slavutinskij V.V. (Vasilko)	444	0	5	2024-04-22 17:26:35		536682
17	Slavutinskij V.V. (Vasilko)	444	0	7	2024-04-22 17:26:21		536683
18	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		565838
19	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		592359
20	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		605991
21	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		672033
22	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		675347
23	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		677737
24	Nikolaenko A.V. (Shadow77)	82	14	135	2023-12-24 02:07:10		710402
25	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		755577
26	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		762664
27	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		787241
28	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1032273
29	Zajtsev V.S. (Sleeping)	21	112	150	2023-04-18 11:40:16		1069829
30	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1103818
31	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1207807
32	Koptel'tsev V. (selber)	20	113	237	2022-11-06 21:16:51		1303972
33	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1343181
34	Lukov D.R. (Gendalf)	239	0	90	2022-07-21 11:18:50		1460090
35	Pavlov A.V. (Anton)	59	29	141	2022-04-10 16:17:39		1606671
36	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1720721
37	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		1858428
38	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		1986780
39	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2121134
40	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2163320
41	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2167068
42	Kozharinov A. (bubala)	204	0	10	2020-09-30 09:55:07		2409134
43	Samarin A. (not.yet.sql.master)	139	0	112	2020-08-14 15:12:10		2476497
44	Koptel'tsev V. (selber)	20	113	259	2020-06-24 00:22:07		2550827
45	Samarin A. (not.yet.sql.master)	139	0	138	2020-05-09 21:48:04		2615781
46	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2623752
47	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2663266
48	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2686993
49	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		2997383
50	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3024665
51	Romanov K.Yu. (kostik)	304	0	12	2019-07-25 08:42:10		3032727
52	Kordyum A. (alko58)	222	0	12	2019-07-12 15:58:52		3051010
53	Pavlov A.V. (Anton)	59	29	168	2019-06-12 01:20:21		3095089
54	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3235064
55	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3333332
56	Grishunin M.F. (MikhailFG)	91	10	144	2018-12-26 09:36:27		3336512
57	Shindin A.V. (AlShin)	24	99	45	2018-09-18 15:45:28		3478703
58	Skorohod I. (Dracul4ik)	77	15	45	2018-08-07 14:38:23		3539251
59	Voevutskij S.A. (SergLK)	209	0	45	2018-07-01 13:19:14		3592610
60	Zyrin V.E. (Vezyr)	536	0	29	2018-05-29 14:14:19		3640075
61	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3732141
62	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3736050
63	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3736129
64	Azbel' E.G. (enull)	76	15	148	2018-03-08 04:10:21		3758759
65	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		3772915
66	F (uff)	64	25	95	2018-01-22 15:57:03		3822852
67	Aliev R. (y4nzi)	26	95	259	2017-12-17 18:48:39		3874520
68	Kordyum A. (alko58)	222	0	101	2017-11-21 18:18:43		3911990
69	Zajtsev V.S. (Sleeping)	21	112	190	2017-11-20 12:57:31		3913751
70	Aliev R. (y4nzi)	26	95	257	2017-11-19 19:09:17		3914820
71	Aliev R. (y4nzi)	26	95	255	2017-10-24 14:34:21		3952535
72	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		3979651
73	Skorohod I. (Dracul4ik)	77	15	156	2017-09-12 19:34:33		4012714
74	Grinkevich D.L. (Dmitrij Grinkevich)	22	109	115	2017-07-21 14:09:37		4089359
75	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4135904
76	Vorob'ev E.V. (Johnnymnemonic)	157	0	138	2017-06-16 09:15:49		4140053
77	F (uff)	64	25	185	2017-06-01 10:27:49		4161581
78	Skorohod I. (Dracul4ik)	77	15	146	2017-05-04 17:54:53		4201454
79	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4263345
80	Skorohod I. (Dracul4ik)	77	15	144	2016-10-10 15:20:14		4498249
81	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4533722
82	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4612945
83	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4743280
84	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		4785379
85	Sivoglazov M.A. (Gaizenberg)	65	24	127	2015-11-28 14:08:52		4954800
86	Maslyaev V.S. (Velmont)	89	11	170	2015-11-06 14:01:20		4986488
87	Sivoglazov M.A. (Gaizenberg)	65	24	261	2015-10-13 23:22:26		5020486
88	Fomichev A.V. (Fomichev)	194	0	101	2015-10-07 11:21:04		5029848
89	Grinkevich D.L. (Dmitrij Grinkevich)	22	109	188	2015-09-19 12:34:48		5055694
90	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5069998
91	Frolov (dr.shtopor)	80	14	141	2015-09-08 10:04:55		5071684
92	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		5083293
93	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5086864
94	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5090195
95	Maslyaev V.S. (Velmont)	89	11	140	2015-07-27 05:27:50		5133881
96	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5135148
97	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5143710
98	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5153440
99	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5162067
100	Skorohod I. (Dracul4ik)	77	15	256	2015-01-28 15:03:11		5392506

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