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SQL exercises

October 24, 07:04 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: 13900

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	13	192	192	2026-10-17 13:29:17	2026-10-22 14:52:53	7284
2	Frolov K.A. (Murderface_)	136	0	53	2026-10-19 19:02:15		6482
3	Krasovskij E.A. (pegoopik)	1	268	192	2026-10-16 18:51:16	2026-10-16 18:51:23	0
4	Safronov P.A. (Paulus73)	117	6	140	2026-10-09 09:42:14	2026-10-15 12:25:59	8804
5	Vinogradova S.M. (Tigra1)	125	4	141	2026-10-10 17:01:15		19563
6	Kostomarov A.V. (al29)	5	245	53	2026-09-30 08:53:59		34450
7	Koptel'tsev V. (selber)	18	133	183	2026-09-07 08:11:06		67613
8	Komarov A.N. (Shveda Saulya)	35	68	165	2026-08-28 13:41:52		81682
9	Koptel'tsev V. (selber)	18	133	188	2026-08-21 06:33:00		92191
10	Williams B. (BW)	36	65	252	2026-07-31 13:33:49		122010
11	Williams B. (BW)	36	65	264	2026-07-29 13:21:27		124903
12	Sigankov V.I. (vasilyvanc)	33	72	216	2026-07-23 12:13:08		133611
13	Sigankov V.I. (vasilyvanc)	33	72	241	2026-07-21 14:05:13		136379
14	Zajtsev V.S. (Sleeping)	22	116	241	2026-06-16 18:38:55		186505
15	Chernov D.V. (Kursist)	3	260	241	2026-05-23 20:49:50		220934
16	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		254599
17	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		264827
18	Vyazovetskov A.S. (alex_v)	6	243	264	2026-04-22 19:15:17		265669
19	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		296381
20	Petrov Y. (YuriPetrov)	32	76	210	2026-01-26 17:36:12		389608
21	Lukov D.R. (Gendalf)	248	0	32	2025-12-05 01:36:21		465448
22	Chebykin D. (GriGrim)	39	60	210	2025-07-11 01:12:59		677151
23	Chuvstvin M. (chuvstvinmaxim)	92	9	141	2025-01-29 11:09:56		911274
24	Chuvstvin M. (chuvstvinmaxim)	92	9	258	2025-01-21 00:01:28		923463
25	Lyubomudrov R.G. (born2tilt)	73	20	162	2024-10-10 07:48:40		1071316
26	Lyubomudrov R.G. (born2tilt)	73	20	202	2024-10-09 10:00:37		1072624
27	Frolov K.A. (Murderface_)	136	0	138	2024-09-23 14:49:59		1095374
28	Zajtsev V.S. (Sleeping)	22	116	164	2024-07-09 13:11:22		1204913
29	Slavutinskij V.V. (Vasilko)	459	0	5	2024-04-22 17:26:35		1316978
30	Slavutinskij V.V. (Vasilko)	459	0	7	2024-04-22 17:26:21		1316978
31	Williams B. (BW)	36	65	141	2024-04-02 11:30:28		1346134
32	Kukushkin S.A. (smog)	16	151	194	2024-03-15 01:29:39		1372655
33	Latyntsev N.G. (aks_nsk)	54	35	253	2024-03-05 14:17:51		1386286
34	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1452329
35	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1455643
36	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1458032
37	Nikolaenko A.V. (Shadow77)	82	14	135	2023-12-24 02:07:10		1490697
38	Boiko D. (Angellore)	9	231	262	2023-11-17 19:04:36		1542960
39	Rudikov E. (cubie)	137	0	138	2023-10-31 17:27:54		1567536
40	Shkarednyj I.N. (Gosha)	37	64	198	2023-03-25 21:10:27		1884114
41	Latyntsev N.G. (aks_nsk)	54	35	255	2023-01-12 16:01:39		1988103
42	Koptel'tsev V. (selber)	18	133	237	2022-11-06 21:16:51		2084267
43	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		2123476
44	Lukov D.R. (Gendalf)	248	0	90	2022-07-21 11:18:50		2240385
45	Pavlov A.V. (Anton)	59	29	141	2022-04-10 16:17:39		2386967
46	Sigankov V.I. (vasilyvanc)	33	72	161	2021-10-17 20:21:01		2638723
47	Fedevych V.I. (labuch_fedev)	38	63	221	2021-07-20 17:09:05		2767075
48	Pusev D.V. (Pusev_Denis)	19	132	234	2021-04-18 09:55:08		2901429
49	Kukushkin S.A. (smog)	16	151	12	2021-03-20 02:48:36		2943616
50	Pusev D.V. (Pusev_Denis)	19	132	159	2021-03-17 12:21:10		2947363
51	Kozharinov A. (bubala)	215	0	10	2020-09-30 09:55:07		3189429
52	Samarin A. (not.yet.sql.master)	148	0	112	2020-08-14 15:12:10		3256792
53	Koptel'tsev V. (selber)	18	133	259	2020-06-24 00:22:07		3331122
54	Samarin A. (not.yet.sql.master)	148	0	138	2020-05-09 21:48:04		3396076
55	Karasyova N.V. (vlksm)	10	223	230	2020-05-04 08:57:25		3404047
56	Fedevych V.I. (labuch_fedev)	38	63	226	2020-04-06 22:22:48		3443561
57	Pusev D.V. (Pusev_Denis)	19	132	184	2020-03-21 10:55:32		3467289
58	Fokin A. (Vizitor )	44	50	263	2019-08-18 21:46:14		3777678
59	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3804960
60	Romanov K.Yu. (kostik)	313	0	12	2019-07-25 08:42:10		3813022
61	Kordyum A. (alko58)	233	0	12	2019-07-12 15:58:52		3831305
62	Pavlov A.V. (Anton)	59	29	168	2019-06-12 01:20:21		3875384
63	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		4015359
64	Kurochkin P.A. (qwrqwr)	12	209	227	2018-12-28 14:37:25		4113627
65	Grishunin M.F. (MikhailFG)	90	10	144	2018-12-26 09:36:27		4116808
66	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4258999
67	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4319546
68	Voevutskij S.A. (SergLK)	221	0	45	2018-07-01 13:19:14		4372905
69	Zyrin V.E. (Vezyr)	553	0	29	2018-05-29 14:14:19		4420370
70	Chebykin D. (GriGrim)	39	60	228	2018-03-26 15:47:45		4512436
71	Shkarednyj I.N. (Gosha)	37	64	151	2018-03-23 22:38:32		4516346
72	Boiko D. (Angellore)	9	231	229	2018-03-23 21:19:51		4516424
73	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4539054
74	Shkarednyj I.N. (Gosha)	37	64	147	2018-02-26 08:13:30		4553211
75	F (uff)	66	23	95	2018-01-22 15:57:03		4603147
76	Aliev R. (y4nzi)	27	93	259	2017-12-17 18:48:39		4654816
77	Kordyum A. (alko58)	233	0	101	2017-11-21 18:18:43		4692286
78	Zajtsev V.S. (Sleeping)	22	116	190	2017-11-20 12:57:31		4694047
79	Aliev R. (y4nzi)	27	93	257	2017-11-19 19:09:17		4695115
80	Aliev R. (y4nzi)	27	93	255	2017-10-24 14:34:21		4732830
81	Kukushkin S.A. (smog)	16	151	171	2017-10-05 18:37:27		4759947
82	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4793010
83	Grinkevich D.L. (Dmitrij Grinkevich)	23	107	115	2017-07-21 14:09:37		4869655
84	Bezhaev A.Yu. (Baser)	8	234	220	2017-06-19 06:24:54		4916199
85	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4920348
86	F (uff)	66	23	185	2017-06-01 10:27:49		4941876
87	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4981749
88	Movlyanov A.P. (Oct)	14	191	218	2017-03-22 18:23:50		5043640
89	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5278544
90	Sysoev A.V. (Sysa)	53	37	165	2016-09-16 00:07:24		5314017
91	Sysoev A.V. (Sysa)	53	37	168	2016-07-22 23:44:07		5393240
92	Karasyova N.V. (vlksm)	10	223	263	2016-04-23 11:28:43		5523576
93	Titovskij P.S. (kli3ma)	46	45	164	2016-03-25 05:49:30		5565675
94	Sivoglazov M.A. (Gaizenberg)	70	22	127	2015-11-28 14:08:52		5735095
95	Maslyaev V.S. (Velmont)	94	9	170	2015-11-06 14:01:20		5766783
96	Sivoglazov M.A. (Gaizenberg)	70	22	261	2015-10-13 23:22:26		5800782
97	Fomichev A.V. (Fomichev)	200	0	101	2015-10-07 11:21:04		5810143
98	Grinkevich D.L. (Dmitrij Grinkevich)	23	107	188	2015-09-19 12:34:48		5835989
99	Movlyanov A.P. (Oct)	14	191	194	2015-09-09 14:10:52		5850293
100	Frolov (dr.shtopor)	80	14	141	2015-09-08 10:04:55		5851979

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