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SQL exercises

July 19, 01:53 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: 15106

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	24	105	176	2025-07-14 10:47:08	2025-07-18 13:39:50	5933
2	Chebykin D. (GriGrim)	38	62	32	2025-07-14 00:48:13	2025-07-14 23:43:31	1375
3	Chebykin D. (GriGrim)	38	62	5	2025-07-13 18:57:04	2025-07-14 00:44:45	348
4	Makarov I.A. (_Bkmz_)	62	26	162	2025-07-13 09:28:38	2025-07-13 11:51:03	142
5	Sarkis'yan G. (gennadi_s)	24	105	175	2025-07-04 14:31:46	2025-07-12 13:47:07	11475
6	Makarov I.A. (_Bkmz_)	62	26	209	2025-07-12 09:51:05	2025-07-12 11:17:41	87
7	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		11561
8	Makarov I.A. (_Bkmz_)	62	26	177	2025-07-06 09:38:39	2025-07-06 11:56:40	138
9	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		133281
10	Fomichev A.V. (Fomichev)	196	0	7	2025-02-25 02:16:37		207337
11	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		215436
12	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		245684
13	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		257872
14	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		405725
15	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		407033
16	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		429784
17	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		457224
18	Zajtsev V.S. (Sleeping)	21	112	164	2024-07-09 13:11:22		539322
19	Slavutinskij V.V. (Vasilko)	446	0	5	2024-04-22 17:26:35		651387
20	Slavutinskij V.V. (Vasilko)	446	0	7	2024-04-22 17:26:21		651388
21	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		680543
22	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		707064
23	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		720696
24	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		786738
25	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		790052
26	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		792442
27	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		825107
28	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		870282
29	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		877369
30	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		901946
31	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1146978
32	Zajtsev V.S. (Sleeping)	21	112	150	2023-04-18 11:40:16		1184534
33	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1218523
34	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1322512
35	Koptel'tsev V. (selber)	20	113	237	2022-11-06 21:16:51		1418677
36	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1457886
37	Lukov D.R. (Gendalf)	240	0	90	2022-07-21 11:18:50		1574795
38	Pavlov A.V. (Anton)	59	29	141	2022-04-10 16:17:39		1721376
39	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1835426
40	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		1973133
41	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2101485
42	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2235839
43	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2278025
44	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2281773
45	Kozharinov A. (bubala)	206	0	10	2020-09-30 09:55:07		2523839
46	Samarin A. (not.yet.sql.master)	139	0	112	2020-08-14 15:12:10		2591202
47	Koptel'tsev V. (selber)	20	113	259	2020-06-24 00:22:07		2665532
48	Samarin A. (not.yet.sql.master)	139	0	138	2020-05-09 21:48:04		2730486
49	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2738456
50	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2777971
51	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2801698
52	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3112088
53	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3139370
54	Romanov K.Yu. (kostik)	304	0	12	2019-07-25 08:42:10		3147432
55	Kordyum A. (alko58)	224	0	12	2019-07-12 15:58:52		3165715
56	Pavlov A.V. (Anton)	59	29	168	2019-06-12 01:20:21		3209794
57	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3349769
58	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3448036
59	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3451217
60	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3593408
61	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3653955
62	Voevutskij S.A. (SergLK)	211	0	45	2018-07-01 13:19:14		3707315
63	Zyrin V.E. (Vezyr)	537	0	29	2018-05-29 14:14:19		3754780
64	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3846846
65	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3850755
66	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3850834
67	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		3873464
68	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		3887620
69	F (uff)	65	25	95	2018-01-22 15:57:03		3937557
70	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		3989225
71	Kordyum A. (alko58)	224	0	101	2017-11-21 18:18:43		4026695
72	Zajtsev V.S. (Sleeping)	21	112	190	2017-11-20 12:57:31		4028456
73	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4029525
74	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4067240
75	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4094356
76	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4127419
77	Grinkevich D.L. (Dmitrij Grinkevich)	22	109	115	2017-07-21 14:09:37		4204064
78	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4250609
79	Vorob'ev E.V. (Johnnymnemonic)	158	0	138	2017-06-16 09:15:49		4254758
80	F (uff)	65	25	185	2017-06-01 10:27:49		4276286
81	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4316159
82	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4378050
83	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4612954
84	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4648426
85	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4727650
86	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4857985
87	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		4900084
88	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5069505
89	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5101193
90	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5135191
91	Fomichev A.V. (Fomichev)	196	0	101	2015-10-07 11:21:04		5144553
92	Grinkevich D.L. (Dmitrij Grinkevich)	22	109	188	2015-09-19 12:34:48		5170399
93	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5184703
94	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5186389
95	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		5197998
96	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5201569
97	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5204900
98	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5248586
99	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5249853
100	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5258415

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