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SQL exercises

August 21, 17:59 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: 15159

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	14	184	206	2026-08-15 14:26:50	2026-08-21 15:41:57	8715
2	Frolov K.A. (Murderface_)	135	0	24	2026-08-21 11:04:04	2026-08-21 11:17:39	14
3	Koptel'tsev V. (selber)	19	133	188	2026-08-21 06:33:00		687
4	Komarov A.N. (Shveda Saulya)	35	68	160	2026-05-09 13:24:21	2026-08-20 17:24:55	148561
5	Sarkis'yan G. (gennadi_s)	14	184	205	2026-08-07 13:45:21	2026-08-10 17:09:13	4524
6	Williams B. (BW)	36	67	252	2026-07-31 13:33:49		30506
7	Williams B. (BW)	36	67	264	2026-07-29 13:21:27		33398
8	Sigankov V.I. (vasilyvanc)	33	74	216	2026-07-23 12:13:08		42107
9	Sigankov V.I. (vasilyvanc)	33	74	241	2026-07-21 14:05:13		44874
10	Zajtsev V.S. (Sleeping)	22	118	241	2026-06-16 18:38:55		95001
11	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		129430
12	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		163094
13	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		173322
14	Vyazovetskov A.S. (alex_v)	6	245	264	2026-04-22 19:15:17		174164
15	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		204876
16	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		298103
17	Lukov D.R. (Gendalf)	247	0	32	2025-12-05 01:36:21		373943
18	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		585647
19	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		819770
20	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		831958
21	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		979811
22	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		981119
23	Frolov K.A. (Murderface_)	135	0	138	2024-09-23 14:49:59		1003870
24	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1113408
25	Slavutinskij V.V. (Vasilko)	455	0	5	2024-04-22 17:26:35		1225473
26	Slavutinskij V.V. (Vasilko)	455	0	7	2024-04-22 17:26:21		1225473
27	Williams B. (BW)	36	67	141	2024-04-02 11:30:28		1254629
28	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1281150
29	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1294782
30	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1360824
31	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1364138
32	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1366528
33	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1399193
34	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1451455
35	Rudikov E. (cubie)	136	0	138	2023-10-31 17:27:54		1476032
36	Shkarednyj I.N. (Gosha)	37	66	198	2023-03-25 21:10:27		1792609
37	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1896598
38	Koptel'tsev V. (selber)	19	133	237	2022-11-06 21:16:51		1992763
39	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		2031971
40	Lukov D.R. (Gendalf)	247	0	90	2022-07-21 11:18:50		2148881
41	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2295462
42	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2547219
43	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2675571
44	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2809925
45	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2852111
46	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2855859
47	Kozharinov A. (bubala)	213	0	10	2020-09-30 09:55:07		3097925
48	Samarin A. (not.yet.sql.master)	147	0	112	2020-08-14 15:12:10		3165288
49	Koptel'tsev V. (selber)	19	133	259	2020-06-24 00:22:07		3239618
50	Samarin A. (not.yet.sql.master)	147	0	138	2020-05-09 21:48:04		3304572
51	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3312542
52	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3352057
53	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3375784
54	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3686173
55	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3713455
56	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3721518
57	Kordyum A. (alko58)	231	0	12	2019-07-12 15:58:52		3739801
58	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3783879
59	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3923854
60	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		4022122
61	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		4025303
62	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4167494
63	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4228041
64	Voevutskij S.A. (SergLK)	219	0	45	2018-07-01 13:19:14		4281400
65	Zyrin V.E. (Vezyr)	552	0	29	2018-05-29 14:14:19		4328865
66	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4420932
67	Shkarednyj I.N. (Gosha)	37	66	151	2018-03-23 22:38:32		4424841
68	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4424920
69	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4447549
70	Shkarednyj I.N. (Gosha)	37	66	147	2018-02-26 08:13:30		4461706
71	F (uff)	65	25	95	2018-01-22 15:57:03		4511643
72	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4563311
73	Kordyum A. (alko58)	231	0	101	2017-11-21 18:18:43		4600781
74	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4602542
75	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4603610
76	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4641325
77	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4668442
78	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4701505
79	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4778150
80	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4824695
81	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4828844
82	F (uff)	65	25	185	2017-06-01 10:27:49		4850372
83	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4890245
84	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4952136
85	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5187039
86	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5222512
87	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5301736
88	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5432071
89	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5474170
90	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5643591
91	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5675278
92	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5709277
93	Fomichev A.V. (Fomichev)	200	0	101	2015-10-07 11:21:04		5718639
94	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5744485
95	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5758789
96	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5760475
97	Varenikov D.M. (Dmitriy Varenikov)	20	130	263	2015-08-31 08:35:37		5772084
98	Chebykin D. (GriGrim)	39	62	263	2015-08-28 21:04:30		5775655
99	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5778986
100	Maslyaev V.S. (Velmont)	91	11	140	2015-07-27 05:27:50		5822672

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