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SQL exercises

June 15, 08:49 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: 15076

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Dubinskij A.V. (_velial)	10	223	88	2025-06-14 13:07:56	2025-06-14 13:12:01	4
2	Dubinskij A.V. (_velial)	10	223	32	2025-06-14 11:33:39	2025-06-14 12:59:20	86
3	Makarov I.A. (_Bkmz_)	75	16	203	2025-06-14 11:13:55	2025-06-14 12:44:35	91
4	Makarov I.A. (_Bkmz_)	75	16	236	2025-06-14 10:28:33	2025-06-14 11:03:01	34
5	Dubinskij A.V. (_velial)	10	223	7	2025-06-13 21:25:31	2025-06-13 21:36:57	11
6	Dubinskij A.V. (_velial)	10	223	5	2025-06-13 20:49:56	2025-06-13 21:24:28	35
7	Makarov I.A. (_Bkmz_)	75	16	201	2025-06-13 10:21:16	2025-06-13 12:43:54	143
8	Makarov I.A. (_Bkmz_)	75	16	197	2025-06-12 10:17:44	2025-06-12 15:13:57	296
9	Sarkis'yan G. (gennadi_s)	28	94	172	2025-06-11 18:25:26		5184
10	Sarkis'yan G. (gennadi_s)	28	94	171	2025-05-26 13:59:15	2025-06-08 15:02:17	18783
11	Makarov I.A. (_Bkmz_)	75	16	192	2025-06-07 10:24:39	2025-06-07 11:11:34	47
12	Makarov I.A. (_Bkmz_)	75	16	256	2025-06-07 09:56:25	2025-06-07 10:16:52	20
13	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		84737
14	Fomichev A.V. (Fomichev)	195	0	7	2025-02-25 02:16:37		158793
15	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		166892
16	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		197140
17	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		209328
18	Lyubomudrov R.G. (born2tilt)	70	22	162	2024-10-10 07:48:40		357181
19	Lyubomudrov R.G. (born2tilt)	70	22	202	2024-10-09 10:00:37		358489
20	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		381240
21	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		408680
22	Zajtsev V.S. (Sleeping)	21	112	164	2024-07-09 13:11:22		490778
23	Slavutinskij V.V. (Vasilko)	446	0	5	2024-04-22 17:26:35		602843
24	Slavutinskij V.V. (Vasilko)	446	0	7	2024-04-22 17:26:21		602843
25	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		631999
26	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		658520
27	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		672152
28	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		738194
29	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		741508
30	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		743898
31	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		776563
32	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		821738
33	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		828825
34	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		853402
35	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1098434
36	Zajtsev V.S. (Sleeping)	21	112	150	2023-04-18 11:40:16		1135989
37	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1169979
38	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1273968
39	Koptel'tsev V. (selber)	20	113	237	2022-11-06 21:16:51		1370133
40	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1409341
41	Lukov D.R. (Gendalf)	240	0	90	2022-07-21 11:18:50		1526251
42	Pavlov A.V. (Anton)	59	29	141	2022-04-10 16:17:39		1672832
43	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1786882
44	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		1924589
45	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2052941
46	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2187295
47	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2229481
48	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2233229
49	Kozharinov A. (bubala)	205	0	10	2020-09-30 09:55:07		2475295
50	Samarin A. (not.yet.sql.master)	139	0	112	2020-08-14 15:12:10		2542658
51	Koptel'tsev V. (selber)	20	113	259	2020-06-24 00:22:07		2616988
52	Samarin A. (not.yet.sql.master)	139	0	138	2020-05-09 21:48:04		2681942
53	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2689912
54	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2729427
55	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2753154
56	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3063543
57	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3090826
58	Romanov K.Yu. (kostik)	304	0	12	2019-07-25 08:42:10		3098888
59	Kordyum A. (alko58)	223	0	12	2019-07-12 15:58:52		3117171
60	Pavlov A.V. (Anton)	59	29	168	2019-06-12 01:20:21		3161249
61	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3301224
62	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3399492
63	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3402673
64	Shindin A.V. (AlShin)	24	99	45	2018-09-18 15:45:28		3544864
65	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3605411
66	Voevutskij S.A. (SergLK)	210	0	45	2018-07-01 13:19:14		3658770
67	Zyrin V.E. (Vezyr)	537	0	29	2018-05-29 14:14:19		3706235
68	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3798302
69	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3802211
70	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3802290
71	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		3824919
72	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		3839076
73	F (uff)	64	25	95	2018-01-22 15:57:03		3889013
74	Aliev R. (y4nzi)	26	95	259	2017-12-17 18:48:39		3940681
75	Kordyum A. (alko58)	223	0	101	2017-11-21 18:18:43		3978151
76	Zajtsev V.S. (Sleeping)	21	112	190	2017-11-20 12:57:31		3979912
77	Aliev R. (y4nzi)	26	95	257	2017-11-19 19:09:17		3980980
78	Aliev R. (y4nzi)	26	95	255	2017-10-24 14:34:21		4018695
79	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4045812
80	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4078875
81	Grinkevich D.L. (Dmitrij Grinkevich)	22	109	115	2017-07-21 14:09:37		4155520
82	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4202065
83	Vorob'ev E.V. (Johnnymnemonic)	157	0	138	2017-06-16 09:15:49		4206214
84	F (uff)	64	25	185	2017-06-01 10:27:49		4227742
85	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4267615
86	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4329506
87	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4564409
88	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4599882
89	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4679106
90	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4809441
91	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		4851540
92	Sivoglazov M.A. (Gaizenberg)	65	24	127	2015-11-28 14:08:52		5020961
93	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5052648
94	Sivoglazov M.A. (Gaizenberg)	65	24	261	2015-10-13 23:22:26		5086647
95	Fomichev A.V. (Fomichev)	195	0	101	2015-10-07 11:21:04		5096009
96	Grinkevich D.L. (Dmitrij Grinkevich)	22	109	188	2015-09-19 12:34:48		5121855
97	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5136159
98	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5137845
99	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		5149454
100	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5153025

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