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SQL exercises

February 25, 01:31 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: 15418

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		4678
2	Polyakov V.M. (rock_4)	134	0	138	2026-02-20 17:03:21		6269
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		20749
8	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		42236
9	Lukov D.R. (Gendalf)	244	0	32	2025-12-05 01:36:21		118076
10	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		329779
11	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		451499
12	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		533654
13	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		563902
14	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		576090
15	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		723943
16	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		725251
17	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		748002
18	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		857540
19	Slavutinskij V.V. (Vasilko)	453	0	5	2024-04-22 17:26:35		969605
20	Slavutinskij V.V. (Vasilko)	453	0	7	2024-04-22 17:26:21		969606
21	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		998761
22	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		1025282
23	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		1038914
24	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1104956
25	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1108270
26	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1110660
27	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1143325
28	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1195587
29	Rudikov E. (cubie)	135	0	138	2023-10-31 17:27:54		1220164
30	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1502752
31	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1536741
32	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1640730
33	Koptel'tsev V. (selber)	21	119	237	2022-11-06 21:16:51		1736895
34	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1776104
35	Lukov D.R. (Gendalf)	244	0	90	2022-07-21 11:18:50		1893013
36	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2039594
37	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2291351
38	Fedevych V.I. (labuch_fedev)	37	65	221	2021-07-20 17:09:05		2419703
39	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2554057
40	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2596243
41	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2599991
42	Kozharinov A. (bubala)	210	0	10	2020-09-30 09:55:07		2842057
43	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		2909420
44	Koptel'tsev V. (selber)	21	119	259	2020-06-24 00:22:07		2983750
45	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		3048704
46	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		3056674
47	Fedevych V.I. (labuch_fedev)	37	65	226	2020-04-06 22:22:48		3096189
48	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3119916
49	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3430306
50	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3457588
51	Romanov K.Yu. (kostik)	309	0	12	2019-07-25 08:42:10		3465650
52	Kordyum A. (alko58)	227	0	12	2019-07-12 15:58:52		3483933
53	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3528012
54	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3667987
55	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3766254
56	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3769435
57	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3911626
58	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3972173
59	Voevutskij S.A. (SergLK)	216	0	45	2018-07-01 13:19:14		4025533
60	Zyrin V.E. (Vezyr)	544	0	29	2018-05-29 14:14:19		4072998
61	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		4165064
62	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4168973
63	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4169052
64	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4191682
65	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4205838
66	F (uff)	65	25	95	2018-01-22 15:57:03		4255775
67	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4307443
68	Kordyum A. (alko58)	227	0	101	2017-11-21 18:18:43		4344913
69	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4346674
70	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4347743
71	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4385458
72	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4412574
73	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4445637
74	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4522282
75	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4568827
76	Vorob'ev E.V. (Johnnymnemonic)	161	0	138	2017-06-16 09:15:49		4572976
77	F (uff)	65	25	185	2017-06-01 10:27:49		4594504
78	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4634377
79	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4696268
80	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4931172
81	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4966644
82	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		5045868
83	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5176203
84	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5218302
85	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5387723
86	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5419411
87	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5453409
88	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5462771
89	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5488617
90	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5502921
91	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5504607
92	Varenikov D.M. (Dmitriy Varenikov)	19	128	263	2015-08-31 08:35:37		5516216
93	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5519787
94	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5523118
95	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5566804
96	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5568071
97	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5576633
98	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5586363
99	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5594990
100	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5825429

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