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SQL exercises

April 18, 09:45 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: 15058

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sigankov V.I. (vasilyvanc)	33	74	24	2026-04-16 17:02:10	2026-04-16 17:20:47	19
2	Polyakov V.M. (rock_4)	94	9	152	2026-04-16 13:35:42		2650
3	Polyakov V.M. (rock_4)	94	9	162	2026-04-16 13:25:02		2661
4	Polyakov V.M. (rock_4)	94	9	146	2026-04-06 15:53:06	2026-04-15 17:22:34	13049
5	Polyakov V.M. (rock_4)	94	9	24	2026-04-14 15:22:40	2026-04-14 16:03:02	40
6	Sarkis'yan G. (gennadi_s)	15	160	198	2026-04-13 14:57:51		6888
7	Kostomarov A.V. (al29)	5	247	24	2026-04-13 13:11:46	2026-04-13 14:15:15	63
8	Kuritsyn V.N. (ValNick)	139	0	24	2026-04-11 22:13:57	2026-04-11 22:41:38	28
9	Komarov A.N. (Shveda Saulya)	38	62	159	2026-04-10 16:59:02		11087
10	Sarkis'yan G. (gennadi_s)	15	160	197	2026-04-10 12:16:57	2026-04-10 15:25:18	188
11	Komarov A.N. (Shveda Saulya)	38	62	158	2026-04-06 16:38:40	2026-04-07 00:39:10	481
12	Komarov A.N. (Shveda Saulya)	38	62	24	2026-04-06 16:13:31	2026-04-06 16:30:45	17
13	Polyakov V.M. (rock_4)	94	9	254	2026-03-25 09:58:47	2026-04-06 15:22:00	17603
14	Sarkis'yan G. (gennadi_s)	15	160	196	2026-04-04 14:52:32	2026-04-06 14:56:09	2884
15	Chernov D.V. (Kursist)	2	262	24	2026-04-05 21:27:47	2026-04-05 22:13:10	45
16	Koptel'tsev V. (selber)	20	122	24	2026-04-05 18:00:17	2026-04-05 18:20:48	21
17	Kurochkin P.A. (qwrqwr)	11	211	24	2026-04-05 13:51:41	2026-04-05 14:52:27	61
18	Polyakov V.M. (rock_4)	94	9	148	2026-04-01 11:23:28		24382
19	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		117610
20	Lukov D.R. (Gendalf)	245	0	32	2025-12-05 01:36:21		193450
21	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		405153
22	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		526873
23	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		609028
24	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		639276
25	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		651464
26	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		799317
27	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		800625
28	Frolov K.A. (Murderface_)	134	0	138	2024-09-23 14:49:59		823376
29	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		932915
30	Slavutinskij V.V. (Vasilko)	454	0	5	2024-04-22 17:26:35		1044979
31	Slavutinskij V.V. (Vasilko)	454	0	7	2024-04-22 17:26:21		1044980
32	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1074135
33	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1100656
34	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		1114288
35	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1180330
36	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1183644
37	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1186034
38	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1218699
39	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1270961
40	Rudikov E. (cubie)	135	0	138	2023-10-31 17:27:54		1295538
41	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1612115
42	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1716104
43	Koptel'tsev V. (selber)	20	122	237	2022-11-06 21:16:51		1812269
44	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		1851478
45	Lukov D.R. (Gendalf)	245	0	90	2022-07-21 11:18:50		1968387
46	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2114968
47	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2366725
48	Fedevych V.I. (labuch_fedev)	37	65	221	2021-07-20 17:09:05		2495077
49	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2629431
50	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2671617
51	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2675365
52	Kozharinov A. (bubala)	211	0	10	2020-09-30 09:55:07		2917431
53	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		2984794
54	Koptel'tsev V. (selber)	20	122	259	2020-06-24 00:22:07		3059124
55	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		3124078
56	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		3132048
57	Fedevych V.I. (labuch_fedev)	37	65	226	2020-04-06 22:22:48		3171563
58	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3195290
59	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3505680
60	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3532962
61	Romanov K.Yu. (kostik)	311	0	12	2019-07-25 08:42:10		3541024
62	Kordyum A. (alko58)	229	0	12	2019-07-12 15:58:52		3559307
63	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3603386
64	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3743361
65	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3841628
66	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3844809
67	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3987000
68	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		4047548
69	Voevutskij S.A. (SergLK)	217	0	45	2018-07-01 13:19:14		4100907
70	Zyrin V.E. (Vezyr)	546	0	29	2018-05-29 14:14:19		4148372
71	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4240438
72	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4244347
73	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4244426
74	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4267056
75	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4281212
76	F (uff)	65	25	95	2018-01-22 15:57:03		4331149
77	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4382817
78	Kordyum A. (alko58)	229	0	101	2017-11-21 18:18:43		4420287
79	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4422048
80	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4423117
81	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4460832
82	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4487948
83	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4521011
84	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4597656
85	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4644201
86	Vorob'ev E.V. (Johnnymnemonic)	162	0	138	2017-06-16 09:15:49		4648350
87	F (uff)	65	25	185	2017-06-01 10:27:49		4669878
88	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4709751
89	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4771642
90	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		5006546
91	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		5042018
92	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		5121242
93	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5251577
94	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5293676
95	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5463097
96	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5494785
97	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5528783
98	Fomichev A.V. (Fomichev)	199	0	101	2015-10-07 11:21:04		5538145
99	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5563991
100	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5578295

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