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SQL exercises

April 30, 00:20 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: 15057

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		3508
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		17988
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		92044
8	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		100142
9	Chuvstvin M. (chuvstvinmaxim)	87	11	141	2025-01-29 11:09:56		130391
10	Chuvstvin M. (chuvstvinmaxim)	87	11	258	2025-01-21 00:01:28		142579
11	Lyubomudrov R.G. (born2tilt)	70	22	162	2024-10-10 07:48:40		290432
12	Lyubomudrov R.G. (born2tilt)	70	22	202	2024-10-09 10:00:37		291740
13	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		314491
14	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		341931
15	Zajtsev V.S. (Sleeping)	21	112	164	2024-07-09 13:11:22		424029
16	Slavutinskij V.V. (Vasilko)	444	0	5	2024-04-22 17:26:35		536094
17	Slavutinskij V.V. (Vasilko)	444	0	7	2024-04-22 17:26:21		536094
18	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		565250
19	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		591771
20	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		605403
21	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		671445
22	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		674759
23	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		677149
24	Nikolaenko A.V. (Shadow77)	82	14	135	2023-12-24 02:07:10		709813
25	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		754989
26	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		762076
27	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		786653
28	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1031684
29	Zajtsev V.S. (Sleeping)	21	112	150	2023-04-18 11:40:16		1069240
30	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1103230
31	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1207219
32	Koptel'tsev V. (selber)	20	113	237	2022-11-06 21:16:51		1303384
33	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1342592
34	Lukov D.R. (Gendalf)	239	0	90	2022-07-21 11:18:50		1459502
35	Pavlov A.V. (Anton)	59	29	141	2022-04-10 16:17:39		1606083
36	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1720133
37	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		1857840
38	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		1986191
39	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2120545
40	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2162732
41	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2166479
42	Kozharinov A. (bubala)	204	0	10	2020-09-30 09:55:07		2408545
43	Samarin A. (not.yet.sql.master)	139	0	112	2020-08-14 15:12:10		2475908
44	Koptel'tsev V. (selber)	20	113	259	2020-06-24 00:22:07		2550238
45	Samarin A. (not.yet.sql.master)	139	0	138	2020-05-09 21:48:04		2615192
46	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2623163
47	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2662678
48	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2686405
49	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		2996794
50	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3024076
51	Romanov K.Yu. (kostik)	304	0	12	2019-07-25 08:42:10		3032138
52	Kordyum A. (alko58)	222	0	12	2019-07-12 15:58:52		3050422
53	Pavlov A.V. (Anton)	59	29	168	2019-06-12 01:20:21		3094500
54	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3234475
55	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3332743
56	Grishunin M.F. (MikhailFG)	91	10	144	2018-12-26 09:36:27		3335924
57	Shindin A.V. (AlShin)	24	99	45	2018-09-18 15:45:28		3478115
58	Skorohod I. (Dracul4ik)	77	15	45	2018-08-07 14:38:23		3538662
59	Voevutskij S.A. (SergLK)	209	0	45	2018-07-01 13:19:14		3592021
60	Zyrin V.E. (Vezyr)	536	0	29	2018-05-29 14:14:19		3639486
61	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3731553
62	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3735462
63	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3735541
64	Azbel' E.G. (enull)	76	15	148	2018-03-08 04:10:21		3758170
65	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		3772327
66	F (uff)	64	25	95	2018-01-22 15:57:03		3822264
67	Aliev R. (y4nzi)	26	95	259	2017-12-17 18:48:39		3873932
68	Kordyum A. (alko58)	222	0	101	2017-11-21 18:18:43		3911402
69	Zajtsev V.S. (Sleeping)	21	112	190	2017-11-20 12:57:31		3913163
70	Aliev R. (y4nzi)	26	95	257	2017-11-19 19:09:17		3914231
71	Aliev R. (y4nzi)	26	95	255	2017-10-24 14:34:21		3951946
72	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		3979063
73	Skorohod I. (Dracul4ik)	77	15	156	2017-09-12 19:34:33		4012126
74	Grinkevich D.L. (Dmitrij Grinkevich)	22	109	115	2017-07-21 14:09:37		4088771
75	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4135316
76	Vorob'ev E.V. (Johnnymnemonic)	157	0	138	2017-06-16 09:15:49		4139465
77	F (uff)	64	25	185	2017-06-01 10:27:49		4160993
78	Skorohod I. (Dracul4ik)	77	15	146	2017-05-04 17:54:53		4200866
79	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4262757
80	Skorohod I. (Dracul4ik)	77	15	144	2016-10-10 15:20:14		4497660
81	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4533133
82	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4612356
83	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4742692
84	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		4784791
85	Sivoglazov M.A. (Gaizenberg)	65	24	127	2015-11-28 14:08:52		4954212
86	Maslyaev V.S. (Velmont)	89	11	170	2015-11-06 14:01:20		4985899
87	Sivoglazov M.A. (Gaizenberg)	65	24	261	2015-10-13 23:22:26		5019898
88	Fomichev A.V. (Fomichev)	194	0	101	2015-10-07 11:21:04		5029259
89	Grinkevich D.L. (Dmitrij Grinkevich)	22	109	188	2015-09-19 12:34:48		5055106
90	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5069410
91	Frolov (dr.shtopor)	80	14	141	2015-09-08 10:04:55		5071096
92	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		5082705
93	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5086276
94	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5089607
95	Maslyaev V.S. (Velmont)	89	11	140	2015-07-27 05:27:50		5133293
96	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5134560
97	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5143122
98	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5152852
99	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5161479
100	Skorohod I. (Dracul4ik)	77	15	256	2015-01-28 15:03:11		5391917

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