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SQL exercises

July 19, 02:07 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		11574
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		133294
10	Fomichev A.V. (Fomichev)	196	0	7	2025-02-25 02:16:37		207350
11	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		215449
12	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		245697
13	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		257886
14	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		405738
15	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		407046
16	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		429797
17	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		457237
18	Zajtsev V.S. (Sleeping)	21	112	164	2024-07-09 13:11:22		539336
19	Slavutinskij V.V. (Vasilko)	446	0	5	2024-04-22 17:26:35		651400
20	Slavutinskij V.V. (Vasilko)	446	0	7	2024-04-22 17:26:21		651401
21	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		680557
22	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		707077
23	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		720709
24	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		786752
25	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		790065
26	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		792455
27	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		825120
28	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		870296
29	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		877382
30	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		901959
31	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1146991
32	Zajtsev V.S. (Sleeping)	21	112	150	2023-04-18 11:40:16		1184547
33	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1218537
34	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1322525
35	Koptel'tsev V. (selber)	20	113	237	2022-11-06 21:16:51		1418690
36	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1457899
37	Lukov D.R. (Gendalf)	240	0	90	2022-07-21 11:18:50		1574808
38	Pavlov A.V. (Anton)	59	29	141	2022-04-10 16:17:39		1721389
39	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1835439
40	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		1973146
41	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2101498
42	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2235852
43	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2278038
44	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2281786
45	Kozharinov A. (bubala)	206	0	10	2020-09-30 09:55:07		2523852
46	Samarin A. (not.yet.sql.master)	139	0	112	2020-08-14 15:12:10		2591215
47	Koptel'tsev V. (selber)	20	113	259	2020-06-24 00:22:07		2665545
48	Samarin A. (not.yet.sql.master)	139	0	138	2020-05-09 21:48:04		2730499
49	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2738470
50	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2777984
51	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2801712
52	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3112101
53	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3139383
54	Romanov K.Yu. (kostik)	304	0	12	2019-07-25 08:42:10		3147445
55	Kordyum A. (alko58)	224	0	12	2019-07-12 15:58:52		3165728
56	Pavlov A.V. (Anton)	59	29	168	2019-06-12 01:20:21		3209807
57	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3349782
58	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3448050
59	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3451231
60	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3593422
61	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3653969
62	Voevutskij S.A. (SergLK)	211	0	45	2018-07-01 13:19:14		3707328
63	Zyrin V.E. (Vezyr)	537	0	29	2018-05-29 14:14:19		3754793
64	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3846859
65	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3850769
66	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3850847
67	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		3873477
68	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		3887634
69	F (uff)	65	25	95	2018-01-22 15:57:03		3937570
70	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		3989238
71	Kordyum A. (alko58)	224	0	101	2017-11-21 18:18:43		4026708
72	Zajtsev V.S. (Sleeping)	21	112	190	2017-11-20 12:57:31		4028470
73	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4029538
74	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4067253
75	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4094370
76	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4127432
77	Grinkevich D.L. (Dmitrij Grinkevich)	22	109	115	2017-07-21 14:09:37		4204077
78	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4250622
79	Vorob'ev E.V. (Johnnymnemonic)	158	0	138	2017-06-16 09:15:49		4254771
80	F (uff)	65	25	185	2017-06-01 10:27:49		4276299
81	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4316172
82	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4378063
83	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4612967
84	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4648440
85	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4727663
86	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4857998
87	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		4900098
88	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5069518
89	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5101206
90	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5135205
91	Fomichev A.V. (Fomichev)	196	0	101	2015-10-07 11:21:04		5144566
92	Grinkevich D.L. (Dmitrij Grinkevich)	22	109	188	2015-09-19 12:34:48		5170412
93	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5184716
94	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5186402
95	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		5198011
96	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5201583
97	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5204914
98	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5248599
99	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5249866
100	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5258428

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