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SQL exercises

November 01, 14:32 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: 13920

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	13	193	209	2026-10-30 12:41:46	2026-10-30 14:06:57	85
2	Sarkis'yan G. (gennadi_s)	13	193	192	2026-10-17 13:29:17	2026-10-22 14:52:53	7284
3	Frolov K.A. (Murderface_)	136	0	53	2026-10-19 19:02:15		18451
4	Vinogradova S.M. (Tigra1)	125	4	141	2026-10-10 17:01:15		31532
5	Kostomarov A.V. (al29)	5	245	53	2026-09-30 08:53:59		46419
6	Koptel'tsev V. (selber)	18	133	183	2026-09-07 08:11:06		79582
7	Komarov A.N. (Shveda Saulya)	35	68	165	2026-08-28 13:41:52		93651
8	Koptel'tsev V. (selber)	18	133	188	2026-08-21 06:33:00		104160
9	Williams B. (BW)	36	65	252	2026-07-31 13:33:49		133979
10	Williams B. (BW)	36	65	264	2026-07-29 13:21:27		136871
11	Sigankov V.I. (vasilyvanc)	33	72	216	2026-07-23 12:13:08		145580
12	Sigankov V.I. (vasilyvanc)	33	72	241	2026-07-21 14:05:13		148348
13	Zajtsev V.S. (Sleeping)	22	116	241	2026-06-16 18:38:55		198474
14	Chernov D.V. (Kursist)	3	260	241	2026-05-23 20:49:50		232903
15	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		266568
16	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		276796
17	Vyazovetskov A.S. (alex_v)	6	243	264	2026-04-22 19:15:17		277637
18	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		308349
19	Petrov Y. (YuriPetrov)	32	76	210	2026-01-26 17:36:12		401577
20	Lukov D.R. (Gendalf)	248	0	32	2025-12-05 01:36:21		477416
21	Chebykin D. (GriGrim)	39	60	210	2025-07-11 01:12:59		689120
22	Chuvstvin M. (chuvstvinmaxim)	92	9	141	2025-01-29 11:09:56		923243
23	Chuvstvin M. (chuvstvinmaxim)	92	9	258	2025-01-21 00:01:28		935431
24	Lyubomudrov R.G. (born2tilt)	73	20	162	2024-10-10 07:48:40		1083284
25	Lyubomudrov R.G. (born2tilt)	73	20	202	2024-10-09 10:00:37		1084592
26	Frolov K.A. (Murderface_)	136	0	138	2024-09-23 14:49:59		1107343
27	Zajtsev V.S. (Sleeping)	22	116	164	2024-07-09 13:11:22		1216881
28	Slavutinskij V.V. (Vasilko)	459	0	5	2024-04-22 17:26:35		1328946
29	Slavutinskij V.V. (Vasilko)	459	0	7	2024-04-22 17:26:21		1328946
30	Williams B. (BW)	36	65	141	2024-04-02 11:30:28		1358102
31	Kukushkin S.A. (smog)	16	151	194	2024-03-15 01:29:39		1384623
32	Latyntsev N.G. (aks_nsk)	54	35	253	2024-03-05 14:17:51		1398255
33	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1464297
34	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1467611
35	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1470001
36	Nikolaenko A.V. (Shadow77)	82	14	135	2023-12-24 02:07:10		1502666
37	Boiko D. (Angellore)	9	231	262	2023-11-17 19:04:36		1554928
38	Rudikov E. (cubie)	137	0	138	2023-10-31 17:27:54		1579505
39	Shkarednyj I.N. (Gosha)	37	64	198	2023-03-25 21:10:27		1896082
40	Latyntsev N.G. (aks_nsk)	54	35	255	2023-01-12 16:01:39		2000071
41	Koptel'tsev V. (selber)	18	133	237	2022-11-06 21:16:51		2096236
42	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		2135444
43	Lukov D.R. (Gendalf)	248	0	90	2022-07-21 11:18:50		2252354
44	Pavlov A.V. (Anton)	59	29	141	2022-04-10 16:17:39		2398935
45	Sigankov V.I. (vasilyvanc)	33	72	161	2021-10-17 20:21:01		2650692
46	Fedevych V.I. (labuch_fedev)	38	63	221	2021-07-20 17:09:05		2779044
47	Pusev D.V. (Pusev_Denis)	19	132	234	2021-04-18 09:55:08		2913398
48	Kukushkin S.A. (smog)	16	151	12	2021-03-20 02:48:36		2955584
49	Pusev D.V. (Pusev_Denis)	19	132	159	2021-03-17 12:21:10		2959332
50	Kozharinov A. (bubala)	215	0	10	2020-09-30 09:55:07		3201398
51	Samarin A. (not.yet.sql.master)	148	0	112	2020-08-14 15:12:10		3268761
52	Koptel'tsev V. (selber)	18	133	259	2020-06-24 00:22:07		3343091
53	Samarin A. (not.yet.sql.master)	148	0	138	2020-05-09 21:48:04		3408045
54	Karasyova N.V. (vlksm)	10	223	230	2020-05-04 08:57:25		3416015
55	Fedevych V.I. (labuch_fedev)	38	63	226	2020-04-06 22:22:48		3455530
56	Pusev D.V. (Pusev_Denis)	19	132	184	2020-03-21 10:55:32		3479257
57	Fokin A. (Vizitor )	44	50	263	2019-08-18 21:46:14		3789647
58	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3816929
59	Romanov K.Yu. (kostik)	313	0	12	2019-07-25 08:42:10		3824991
60	Kordyum A. (alko58)	233	0	12	2019-07-12 15:58:52		3843274
61	Pavlov A.V. (Anton)	59	29	168	2019-06-12 01:20:21		3887352
62	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		4027327
63	Kurochkin P.A. (qwrqwr)	12	209	227	2018-12-28 14:37:25		4125595
64	Grishunin M.F. (MikhailFG)	90	10	144	2018-12-26 09:36:27		4128776
65	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4270967
66	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4331514
67	Voevutskij S.A. (SergLK)	222	0	45	2018-07-01 13:19:14		4384874
68	Zyrin V.E. (Vezyr)	555	0	29	2018-05-29 14:14:19		4432338
69	Chebykin D. (GriGrim)	39	60	228	2018-03-26 15:47:45		4524405
70	Shkarednyj I.N. (Gosha)	37	64	151	2018-03-23 22:38:32		4528314
71	Boiko D. (Angellore)	9	231	229	2018-03-23 21:19:51		4528393
72	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4551022
73	Shkarednyj I.N. (Gosha)	37	64	147	2018-02-26 08:13:30		4565179
74	F (uff)	66	23	95	2018-01-22 15:57:03		4615116
75	Aliev R. (y4nzi)	27	93	259	2017-12-17 18:48:39		4666784
76	Kordyum A. (alko58)	233	0	101	2017-11-21 18:18:43		4704254
77	Zajtsev V.S. (Sleeping)	22	116	190	2017-11-20 12:57:31		4706015
78	Aliev R. (y4nzi)	27	93	257	2017-11-19 19:09:17		4707083
79	Aliev R. (y4nzi)	27	93	255	2017-10-24 14:34:21		4744798
80	Kukushkin S.A. (smog)	16	151	171	2017-10-05 18:37:27		4771915
81	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4804978
82	Grinkevich D.L. (Dmitrij Grinkevich)	23	107	115	2017-07-21 14:09:37		4881623
83	Bezhaev A.Yu. (Baser)	8	234	220	2017-06-19 06:24:54		4928168
84	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4932317
85	F (uff)	66	23	185	2017-06-01 10:27:49		4953845
86	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4993718
87	Movlyanov A.P. (Oct)	14	191	218	2017-03-22 18:23:50		5055609
88	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5290513
89	Sysoev A.V. (Sysa)	53	37	165	2016-09-16 00:07:24		5325985
90	Sysoev A.V. (Sysa)	53	37	168	2016-07-22 23:44:07		5405209
91	Karasyova N.V. (vlksm)	10	223	263	2016-04-23 11:28:43		5535544
92	Titovskij P.S. (kli3ma)	46	45	164	2016-03-25 05:49:30		5577643
93	Sivoglazov M.A. (Gaizenberg)	70	22	127	2015-11-28 14:08:52		5747064
94	Maslyaev V.S. (Velmont)	94	9	170	2015-11-06 14:01:20		5778751
95	Sivoglazov M.A. (Gaizenberg)	70	22	261	2015-10-13 23:22:26		5812750
96	Fomichev A.V. (Fomichev)	200	0	101	2015-10-07 11:21:04		5822112
97	Grinkevich D.L. (Dmitrij Grinkevich)	23	107	188	2015-09-19 12:34:48		5847958
98	Movlyanov A.P. (Oct)	14	191	194	2015-09-09 14:10:52		5862262
99	Frolov (dr.shtopor)	80	14	141	2015-09-08 10:04:55		5863948
100	Varenikov D.M. (Dmitriy Varenikov)	20	128	263	2015-08-31 08:35:37		5875557

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