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SQL exercises

October 14, 15:16 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: 15192

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	20	119	182	2025-10-13 15:25:57		1431
2	Sarkis'yan G. (gennadi_s)	20	119	181	2025-09-06 14:04:35	2025-10-06 15:31:50	43287
3	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		137644
4	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		259364
5	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		333420
6	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		341519
7	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		371767
8	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		383955
9	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		531808
10	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		533116
11	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		555867
12	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		583307
13	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		665405
14	Slavutinskij V.V. (Vasilko)	447	0	5	2024-04-22 17:26:35		777470
15	Slavutinskij V.V. (Vasilko)	447	0	7	2024-04-22 17:26:21		777470
16	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		806626
17	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		833147
18	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		846779
19	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		912821
20	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		916135
21	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		918525
22	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		951189
23	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		996365
24	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1003452
25	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1028029
26	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1273060
27	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1310616
28	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1344606
29	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1448595
30	Koptel'tsev V. (selber)	21	116	237	2022-11-06 21:16:51		1544760
31	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1583968
32	Lukov D.R. (Gendalf)	240	0	90	2022-07-21 11:18:50		1700878
33	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1847459
34	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1961509
35	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2099216
36	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2227567
37	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2361921
38	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2404108
39	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2407855
40	Kozharinov A. (bubala)	207	0	10	2020-09-30 09:55:07		2649921
41	Samarin A. (not.yet.sql.master)	141	0	112	2020-08-14 15:12:10		2717284
42	Koptel'tsev V. (selber)	21	116	259	2020-06-24 00:22:07		2791614
43	Samarin A. (not.yet.sql.master)	141	0	138	2020-05-09 21:48:04		2856569
44	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2864539
45	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2904054
46	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2927781
47	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3238170
48	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3265452
49	Romanov K.Yu. (kostik)	306	0	12	2019-07-25 08:42:10		3273514
50	Kordyum A. (alko58)	224	0	12	2019-07-12 15:58:52		3291798
51	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3335876
52	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3475851
53	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3574119
54	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3577300
55	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3719491
56	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3780038
57	Voevutskij S.A. (SergLK)	212	0	45	2018-07-01 13:19:14		3833397
58	Zyrin V.E. (Vezyr)	538	0	29	2018-05-29 14:14:19		3880862
59	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3972929
60	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3976838
61	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3976917
62	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		3999546
63	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		4013703
64	F (uff)	65	25	95	2018-01-22 15:57:03		4063640
65	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4115308
66	Kordyum A. (alko58)	224	0	101	2017-11-21 18:18:43		4152778
67	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4154539
68	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4155607
69	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4193322
70	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4220439
71	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4253502
72	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4330147
73	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4376692
74	Vorob'ev E.V. (Johnnymnemonic)	159	0	138	2017-06-16 09:15:49		4380841
75	F (uff)	65	25	185	2017-06-01 10:27:49		4402369
76	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4442242
77	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4504133
78	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4739036
79	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4774509
80	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4853732
81	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4984068
82	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5026167
83	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5195588
84	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5227275
85	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5261274
86	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5270636
87	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5296482
88	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5310786
89	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5312472
90	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		5324081
91	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5327652
92	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5330983
93	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5374669
94	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5375936
95	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5384498
96	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5394228
97	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5402855
98	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5633293
99	Skorohod I. (Dracul4ik)	78	15	252	2015-01-27 11:56:41		5634920
100	Sysoev A.V. (Sysa)	49	39	143	2014-12-25 01:16:19		5683080

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