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SQL exercises

August 07, 16:58 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: 15156

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	15	178	205	2026-08-07 13:45:21		193
2	Sarkis'yan G. (gennadi_s)	15	178	204	2026-08-04 12:34:26	2026-08-04 13:41:32	67
3	Koptel'tsev V. (selber)	19	133	198	2026-07-12 02:54:38	2026-07-31 20:31:37	28417
4	Williams B. (BW)	35	67	252	2026-07-31 13:33:49		10285
5	Williams B. (BW)	35	67	236	2026-07-29 13:21:56	2026-07-31 13:32:08	2890
6	Vyazovetskov A.S. (alex_v)	6	245	181	2026-07-29 14:43:59	2026-07-30 18:38:40	1675
7	Williams B. (BW)	35	67	264	2026-07-29 13:21:27		13177
8	Williams B. (BW)	35	67	308	2026-07-23 14:59:30	2026-07-29 13:19:06	8540
9	Sarkis'yan G. (gennadi_s)	15	178	203	2026-07-28 14:11:50	2026-07-28 15:38:56	87
10	Sigankov V.I. (vasilyvanc)	33	74	216	2026-07-23 12:13:08		21886
11	Sigankov V.I. (vasilyvanc)	33	74	241	2026-07-21 14:05:13		24653
12	Zajtsev V.S. (Sleeping)	22	118	241	2026-06-16 18:38:55		74780
13	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		109209
14	Komarov A.N. (Shveda Saulya)	37	65	160	2026-05-09 13:24:21		129814
15	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		142873
16	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		153101
17	Vyazovetskov A.S. (alex_v)	6	245	264	2026-04-22 19:15:17		153943
18	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		184655
19	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		277882
20	Lukov D.R. (Gendalf)	247	0	32	2025-12-05 01:36:21		353722
21	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		565426
22	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		799549
23	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		811737
24	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		959590
25	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		960898
26	Frolov K.A. (Murderface_)	135	0	138	2024-09-23 14:49:59		983649
27	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1093187
28	Slavutinskij V.V. (Vasilko)	455	0	5	2024-04-22 17:26:35		1205252
29	Slavutinskij V.V. (Vasilko)	455	0	7	2024-04-22 17:26:21		1205252
30	Williams B. (BW)	35	67	141	2024-04-02 11:30:28		1234408
31	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1260929
32	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1274561
33	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1340603
34	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1343917
35	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1346307
36	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1378971
37	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1431234
38	Rudikov E. (cubie)	136	0	138	2023-10-31 17:27:54		1455811
39	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1772388
40	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1876377
41	Koptel'tsev V. (selber)	19	133	237	2022-11-06 21:16:51		1972542
42	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		2011750
43	Lukov D.R. (Gendalf)	247	0	90	2022-07-21 11:18:50		2128660
44	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2275241
45	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2526998
46	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2655350
47	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2789704
48	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2831890
49	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2835637
50	Kozharinov A. (bubala)	213	0	10	2020-09-30 09:55:07		3077704
51	Samarin A. (not.yet.sql.master)	147	0	112	2020-08-14 15:12:10		3145066
52	Koptel'tsev V. (selber)	19	133	259	2020-06-24 00:22:07		3219397
53	Samarin A. (not.yet.sql.master)	147	0	138	2020-05-09 21:48:04		3284351
54	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3292321
55	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3331836
56	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3355563
57	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3665952
58	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3693234
59	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3701296
60	Kordyum A. (alko58)	231	0	12	2019-07-12 15:58:52		3719580
61	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3763658
62	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3903633
63	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		4001901
64	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		4005082
65	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4147273
66	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4207820
67	Voevutskij S.A. (SergLK)	219	0	45	2018-07-01 13:19:14		4261179
68	Zyrin V.E. (Vezyr)	552	0	29	2018-05-29 14:14:19		4308644
69	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4400711
70	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4404620
71	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4404699
72	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4427328
73	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4441485
74	F (uff)	65	25	95	2018-01-22 15:57:03		4491422
75	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4543090
76	Kordyum A. (alko58)	231	0	101	2017-11-21 18:18:43		4580560
77	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4582321
78	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4583389
79	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4621104
80	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4648221
81	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4681284
82	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4757929
83	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4804474
84	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4808623
85	F (uff)	65	25	185	2017-06-01 10:27:49		4830151
86	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4870024
87	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4931915
88	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5166818
89	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5202291
90	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5281515
91	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5411850
92	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5453949
93	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5623370
94	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5655057
95	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5689056
96	Fomichev A.V. (Fomichev)	200	0	101	2015-10-07 11:21:04		5698418
97	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5724264
98	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5738568
99	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5740254
100	Varenikov D.M. (Dmitriy Varenikov)	20	130	263	2015-08-31 08:35:37		5751863

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