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SQL exercises

February 26, 10:56 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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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: 15453

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	15	153	194	2026-02-10 15:42:58	2026-02-26 10:15:00	22712
2	Koptel'tsev V. (selber)	21	119	179	2026-02-21 19:34:16		6682
3	Polyakov V.M. (rock_4)	134	0	138	2026-02-20 17:03:21		8273
4	Polyakov V.M. (rock_4)	134	0	137	2026-02-13 11:01:59	2026-02-20 16:48:54	10427
5	Komarov A.N. (Shveda Saulya)	41	59	157	2024-09-04 13:29:47	2026-02-19 14:50:22	767601
6	Polyakov V.M. (rock_4)	134	0	135	2026-02-09 12:37:00	2026-02-13 10:46:31	5650
7	Komarov A.N. (Shveda Saulya)	41	59	150	2023-11-22 17:11:28	2026-02-13 01:49:19	1171238
8	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		44240
9	Lukov D.R. (Gendalf)	244	0	32	2025-12-05 01:36:21		120080
10	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		331784
11	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		453504
12	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		535659
13	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		565907
14	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		578095
15	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		725948
16	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		727256
17	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		750007
18	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		859545
19	Slavutinskij V.V. (Vasilko)	453	0	5	2024-04-22 17:26:35		971610
20	Slavutinskij V.V. (Vasilko)	453	0	7	2024-04-22 17:26:21		971610
21	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1000766
22	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1027287
23	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		1040919
24	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1106961
25	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1110275
26	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1112665
27	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1145329
28	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1197592
29	Rudikov E. (cubie)	135	0	138	2023-10-31 17:27:54		1222169
30	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1504756
31	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1538746
32	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1642735
33	Koptel'tsev V. (selber)	21	119	237	2022-11-06 21:16:51		1738900
34	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1778108
35	Lukov D.R. (Gendalf)	244	0	90	2022-07-21 11:18:50		1895018
36	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2041599
37	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2293356
38	Fedevych V.I. (labuch_fedev)	37	65	221	2021-07-20 17:09:05		2421708
39	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2556062
40	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2598248
41	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2601995
42	Kozharinov A. (bubala)	210	0	10	2020-09-30 09:55:07		2844062
43	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		2911424
44	Koptel'tsev V. (selber)	21	119	259	2020-06-24 00:22:07		2985755
45	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		3050709
46	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		3058679
47	Fedevych V.I. (labuch_fedev)	37	65	226	2020-04-06 22:22:48		3098194
48	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3121921
49	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3432310
50	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3459592
51	Romanov K.Yu. (kostik)	309	0	12	2019-07-25 08:42:10		3467654
52	Kordyum A. (alko58)	227	0	12	2019-07-12 15:58:52		3485938
53	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3530016
54	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3669991
55	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3768259
56	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3771440
57	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3913631
58	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3974178
59	Voevutskij S.A. (SergLK)	216	0	45	2018-07-01 13:19:14		4027537
60	Zyrin V.E. (Vezyr)	544	0	29	2018-05-29 14:14:19		4075002
61	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		4167069
62	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4170978
63	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4171057
64	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4193686
65	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4207843
66	F (uff)	65	25	95	2018-01-22 15:57:03		4257780
67	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4309448
68	Kordyum A. (alko58)	227	0	101	2017-11-21 18:18:43		4346918
69	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4348679
70	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4349747
71	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4387462
72	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4414579
73	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4447642
74	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4524287
75	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4570832
76	Vorob'ev E.V. (Johnnymnemonic)	161	0	138	2017-06-16 09:15:49		4574981
77	F (uff)	65	25	185	2017-06-01 10:27:49		4596509
78	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4636382
79	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4698273
80	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4933176
81	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4968649
82	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		5047873
83	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5178208
84	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5220307
85	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5389728
86	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5421415
87	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5455414
88	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5464776
89	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5490622
90	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5504926
91	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5506612
92	Varenikov D.M. (Dmitriy Varenikov)	19	128	263	2015-08-31 08:35:37		5518221
93	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5521792
94	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5525123
95	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5568809
96	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5570076
97	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5578638
98	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5588368
99	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5596995
100	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5827433

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