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SQL exercises

February 22, 07:45 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: 15372

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Koptel'tsev V. (selber)	21	119	179	2026-02-21 19:34:16		731
2	Polyakov V.M. (rock_4)	134	0	138	2026-02-20 17:03:21		2322
3	Polyakov V.M. (rock_4)	134	0	137	2026-02-13 11:01:59	2026-02-20 16:48:54	10427
4	Komarov A.N. (Shveda Saulya)	41	59	157	2024-09-04 13:29:47	2026-02-19 14:50:22	767601
5	Polyakov V.M. (rock_4)	134	0	135	2026-02-09 12:37:00	2026-02-13 10:46:31	5650
6	Komarov A.N. (Shveda Saulya)	41	59	150	2023-11-22 17:11:28	2026-02-13 01:49:19	1171238
7	Sarkis'yan G. (gennadi_s)	16	149	194	2026-02-10 15:42:58		16802
8	Polyakov V.M. (rock_4)	134	0	134	2026-01-29 14:49:41	2026-02-09 11:35:19	15646
9	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		38289
10	Lukov D.R. (Gendalf)	244	0	32	2025-12-05 01:36:21		114129
11	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		325832
12	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		447553
13	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		529707
14	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		559955
15	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		572144
16	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		719997
17	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		721305
18	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		744055
19	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		853594
20	Slavutinskij V.V. (Vasilko)	453	0	5	2024-04-22 17:26:35		965659
21	Slavutinskij V.V. (Vasilko)	453	0	7	2024-04-22 17:26:21		965659
22	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		994815
23	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		1021336
24	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		1034967
25	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1101010
26	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1104324
27	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1106713
28	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1139378
29	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1191641
30	Rudikov E. (cubie)	135	0	138	2023-10-31 17:27:54		1216217
31	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1498805
32	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1532795
33	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1636784
34	Koptel'tsev V. (selber)	21	119	237	2022-11-06 21:16:51		1732948
35	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1772157
36	Lukov D.R. (Gendalf)	244	0	90	2022-07-21 11:18:50		1889066
37	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2035648
38	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2287404
39	Fedevych V.I. (labuch_fedev)	37	65	221	2021-07-20 17:09:05		2415756
40	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2550110
41	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2592297
42	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2596044
43	Kozharinov A. (bubala)	210	0	10	2020-09-30 09:55:07		2838110
44	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		2905473
45	Koptel'tsev V. (selber)	21	119	259	2020-06-24 00:22:07		2979803
46	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		3044757
47	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		3052728
48	Fedevych V.I. (labuch_fedev)	37	65	226	2020-04-06 22:22:48		3092242
49	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3115970
50	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3426359
51	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3453641
52	Romanov K.Yu. (kostik)	309	0	12	2019-07-25 08:42:10		3461703
53	Kordyum A. (alko58)	227	0	12	2019-07-12 15:58:52		3479986
54	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3524065
55	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3664040
56	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3762308
57	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3765489
58	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3907680
59	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3968227
60	Voevutskij S.A. (SergLK)	216	0	45	2018-07-01 13:19:14		4021586
61	Zyrin V.E. (Vezyr)	544	0	29	2018-05-29 14:14:19		4069051
62	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		4161117
63	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4165027
64	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4165105
65	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4187735
66	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4201892
67	F (uff)	65	25	95	2018-01-22 15:57:03		4251828
68	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4303497
69	Kordyum A. (alko58)	227	0	101	2017-11-21 18:18:43		4340967
70	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4342728
71	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4343796
72	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4381511
73	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4408628
74	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4441691
75	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4518336
76	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4564880
77	Vorob'ev E.V. (Johnnymnemonic)	161	0	138	2017-06-16 09:15:49		4569029
78	F (uff)	65	25	185	2017-06-01 10:27:49		4590557
79	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4630430
80	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4692321
81	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4927225
82	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4962698
83	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		5041921
84	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5172257
85	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5214356
86	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5383776
87	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5415464
88	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5449463
89	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5458824
90	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5484670
91	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5498974
92	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5500660
93	Varenikov D.M. (Dmitriy Varenikov)	19	128	263	2015-08-31 08:35:37		5512270
94	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5515841
95	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5519172
96	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5562857
97	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5564124
98	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5572686
99	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5582416
100	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5591043

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