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SQL exercises

March 28, 20:35 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: 14986

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	32	74	162	2025-03-27 14:37:49	2025-03-28 15:54:19	1517
2	Sarkis'yan G. (gennadi_s)	32	74	161	2025-02-16 16:50:58	2025-03-23 18:16:22	50485
3	Suprun D. (TimonSP)	75	15	32	2025-03-22 18:19:38	2025-03-22 18:45:45	26
4	Suprun D. (TimonSP)	75	15	5	2025-03-22 17:42:48	2025-03-22 18:14:33	32
5	Makarov I.A. (_Bkmz_)	93	9	131	2025-03-22 12:30:59	2025-03-22 14:27:35	117
6	Makarov I.A. (_Bkmz_)	93	9	130	2025-03-22 09:14:30	2025-03-22 12:07:04	173
7	Krasovskij E.A. (pegoopik)	1	259	237	2025-03-20 14:35:57	2025-03-20 18:32:29	237
8	Koptel'tsev V. (selber)	23	103	217	2025-02-26 20:10:00		43225
9	Fomichev A.V. (Fomichev)	194	0	7	2025-02-25 02:16:37		45739
10	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		53837
11	Chuvstvin M. (chuvstvinmaxim)	87	11	141	2025-01-29 11:09:56		84086
12	Chuvstvin M. (chuvstvinmaxim)	87	11	258	2025-01-21 00:01:28		96274
13	Lyubomudrov R.G. (born2tilt)	70	22	162	2024-10-10 07:48:40		244127
14	Lyubomudrov R.G. (born2tilt)	70	22	202	2024-10-09 10:00:37		245435
15	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		268185
16	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		295626
17	Zajtsev V.S. (Sleeping)	20	112	164	2024-07-09 13:11:22		377724
18	Slavutinskij V.V. (Vasilko)	444	0	5	2024-04-22 17:26:35		489789
19	Slavutinskij V.V. (Vasilko)	444	0	7	2024-04-22 17:26:21		489789
20	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		518945
21	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		545466
22	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		559098
23	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		625140
24	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		628454
25	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		630843
26	Nikolaenko A.V. (Shadow77)	82	14	135	2023-12-24 02:07:10		663508
27	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		708684
28	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		715771
29	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		740348
30	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		985379
31	Zajtsev V.S. (Sleeping)	20	112	150	2023-04-18 11:40:16		1022935
32	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1056925
33	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1160914
34	Koptel'tsev V. (selber)	23	103	237	2022-11-06 21:16:51		1257079
35	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1296287
36	Lukov D.R. (Gendalf)	238	0	90	2022-07-21 11:18:50		1413197
37	Pavlov A.V. (Anton)	59	29	141	2022-04-10 16:17:39		1559778
38	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1673827
39	Sigankov V.I. (vasilyvanc)	31	74	161	2021-10-17 20:21:01		1811534
40	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		1939886
41	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2074240
42	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2116427
43	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2120174
44	Kozharinov A. (bubala)	204	0	10	2020-09-30 09:55:07		2362240
45	Samarin A. (not.yet.sql.master)	139	0	112	2020-08-14 15:12:10		2429603
46	Koptel'tsev V. (selber)	23	103	259	2020-06-24 00:22:07		2503933
47	Samarin A. (not.yet.sql.master)	139	0	138	2020-05-09 21:48:04		2568887
48	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2576858
49	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2616373
50	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2640100
51	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		2950489
52	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		2977771
53	Romanov K.Yu. (kostik)	303	0	12	2019-07-25 08:42:10		2985833
54	Kordyum A. (alko58)	221	0	12	2019-07-12 15:58:52		3004117
55	Pavlov A.V. (Anton)	59	29	168	2019-06-12 01:20:21		3048195
56	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3188170
57	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3286438
58	Grishunin M.F. (MikhailFG)	91	10	144	2018-12-26 09:36:27		3289619
59	Shindin A.V. (AlShin)	24	99	45	2018-09-18 15:45:28		3431810
60	Skorohod I. (Dracul4ik)	77	15	45	2018-08-07 14:38:23		3492357
61	Voevutskij S.A. (SergLK)	209	0	45	2018-07-01 13:19:14		3545716
62	Zyrin V.E. (Vezyr)	535	0	29	2018-05-29 14:14:19		3593181
63	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3685248
64	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3689157
65	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3689236
66	Azbel' E.G. (enull)	76	15	148	2018-03-08 04:10:21		3711865
67	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		3726022
68	F (uff)	64	25	95	2018-01-22 15:57:03		3775958
69	Aliev R. (y4nzi)	26	95	259	2017-12-17 18:48:39		3827627
70	Kordyum A. (alko58)	221	0	101	2017-11-21 18:18:43		3865097
71	Zajtsev V.S. (Sleeping)	20	112	190	2017-11-20 12:57:31		3866858
72	Aliev R. (y4nzi)	26	95	257	2017-11-19 19:09:17		3867926
73	Aliev R. (y4nzi)	26	95	255	2017-10-24 14:34:21		3905641
74	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		3932758
75	Skorohod I. (Dracul4ik)	77	15	156	2017-09-12 19:34:33		3965821
76	Grinkevich D.L. (Dmitrij Grinkevich)	21	109	115	2017-07-21 14:09:37		4042466
77	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4089011
78	Vorob'ev E.V. (Johnnymnemonic)	157	0	138	2017-06-16 09:15:49		4093160
79	F (uff)	64	25	185	2017-06-01 10:27:49		4114688
80	Skorohod I. (Dracul4ik)	77	15	146	2017-05-04 17:54:53		4154561
81	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4216452
82	Skorohod I. (Dracul4ik)	77	15	144	2016-10-10 15:20:14		4451355
83	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4486828
84	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4566051
85	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4696387
86	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		4738486
87	Sivoglazov M.A. (Gaizenberg)	65	24	127	2015-11-28 14:08:52		4907907
88	Maslyaev V.S. (Velmont)	89	11	170	2015-11-06 14:01:20		4939594
89	Sivoglazov M.A. (Gaizenberg)	65	24	261	2015-10-13 23:22:26		4973593
90	Fomichev A.V. (Fomichev)	194	0	101	2015-10-07 11:21:04		4982954
91	Grinkevich D.L. (Dmitrij Grinkevich)	21	109	188	2015-09-19 12:34:48		5008801
92	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5023105
93	Frolov (dr.shtopor)	80	14	141	2015-09-08 10:04:55		5024791
94	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		5036400
95	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5039971
96	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5043302
97	Maslyaev V.S. (Velmont)	89	11	140	2015-07-27 05:27:50		5086988
98	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5088255
99	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5096816
100	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5106547

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