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SQL exercises

February 16, 18:11 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: 14963

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	32	69	161	2025-02-16 16:50:58		80
2	Makarov I.A. (_Bkmz_)	93	9	127	2025-02-16 10:06:52	2025-02-16 14:51:33	285
3	Makarov I.A. (_Bkmz_)	93	9	101	2025-02-15 10:13:49	2025-02-15 22:47:47	754
4	Chernov D.V. (Kursist)	2	255	217	2025-02-15 21:52:46		1218
5	Filippkin D.V. (_dimon_)	1	257	217	2025-02-15 10:24:37	2025-02-15 10:52:17	28
6	Krasovskij E.A. (pegoopik)	3	251	217	2025-02-14 21:17:06	2025-02-14 21:17:14	0
7	Sarkis'yan G. (gennadi_s)	32	69	160	2025-01-23 14:44:59	2025-02-14 12:54:17	31569
8	Fomichev A.V. (Fomichev)	192	0	5	2025-02-14 00:51:23		3920
9	Makarov I.A. (_Bkmz_)	93	9	105	2025-02-09 10:15:05	2025-02-09 11:59:37	105
10	Makarov I.A. (_Bkmz_)	93	9	100	2025-02-08 09:58:08	2025-02-08 15:12:24	314
11	Krasovskij E.A. (pegoopik)	3	251	238	2025-02-07 00:06:35	2025-02-07 00:41:09	35
12	Krasovskij E.A. (pegoopik)	3	251	235	2025-02-06 23:05:13	2025-02-06 23:26:30	21
13	Chuvstvin M. (chuvstvinmaxim)	87	11	141	2025-01-29 11:09:56		26341
14	Chuvstvin M. (chuvstvinmaxim)	87	11	258	2025-01-21 00:01:28		38530
15	Lyubomudrov R.G. (born2tilt)	70	22	162	2024-10-10 07:48:40		186382
16	Lyubomudrov R.G. (born2tilt)	70	22	202	2024-10-09 10:00:37		187690
17	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		210441
18	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		237881
19	Zajtsev V.S. (Sleeping)	20	112	164	2024-07-09 13:11:22		319980
20	Slavutinskij V.V. (Vasilko)	437	0	5	2024-04-22 17:26:35		432044
21	Slavutinskij V.V. (Vasilko)	437	0	7	2024-04-22 17:26:21		432045
22	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		461201
23	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		487721
24	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		501353
25	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		567396
26	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		570709
27	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		573099
28	Nikolaenko A.V. (Shadow77)	82	14	135	2023-12-24 02:07:10		605764
29	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		650940
30	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		658026
31	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		682603
32	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		927635
33	Zajtsev V.S. (Sleeping)	20	112	150	2023-04-18 11:40:16		965191
34	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		999181
35	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1103169
36	Koptel'tsev V. (selber)	23	103	237	2022-11-06 21:16:51		1199334
37	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1238543
38	Lukov D.R. (Gendalf)	237	0	90	2022-07-21 11:18:50		1355452
39	Pavlov A.V. (Anton)	59	29	141	2022-04-10 16:17:39		1502033
40	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1616083
41	Sigankov V.I. (vasilyvanc)	31	74	161	2021-10-17 20:21:01		1753790
42	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		1882142
43	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2016496
44	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2058682
45	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2062430
46	Kozharinov A. (bubala)	202	0	10	2020-09-30 09:55:07		2304496
47	Samarin A. (not.yet.sql.master)	139	0	112	2020-08-14 15:12:10		2371859
48	Koptel'tsev V. (selber)	23	103	259	2020-06-24 00:22:07		2446189
49	Samarin A. (not.yet.sql.master)	139	0	138	2020-05-09 21:48:04		2511143
50	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2519114
51	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2558628
52	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2582356
53	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		2892745
54	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		2920027
55	Romanov K.Yu. (kostik)	299	0	12	2019-07-25 08:42:10		2928089
56	Kordyum A. (alko58)	219	0	12	2019-07-12 15:58:52		2946372
57	Pavlov A.V. (Anton)	59	29	168	2019-06-12 01:20:21		2990451
58	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3130426
59	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3228694
60	Grishunin M.F. (MikhailFG)	91	10	144	2018-12-26 09:36:27		3231875
61	Shindin A.V. (AlShin)	24	99	45	2018-09-18 15:45:28		3374066
62	Skorohod I. (Dracul4ik)	77	15	45	2018-08-07 14:38:23		3434613
63	Voevutskij S.A. (SergLK)	206	0	45	2018-07-01 13:19:14		3487972
64	Zyrin V.E. (Vezyr)	529	0	29	2018-05-29 14:14:19		3535437
65	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3627503
66	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3631413
67	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3631491
68	Azbel' E.G. (enull)	76	15	148	2018-03-08 04:10:21		3654121
69	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		3668278
70	F (uff)	64	25	95	2018-01-22 15:57:03		3718214
71	Aliev R. (y4nzi)	26	95	259	2017-12-17 18:48:39		3769882
72	Kordyum A. (alko58)	219	0	101	2017-11-21 18:18:43		3807352
73	Zajtsev V.S. (Sleeping)	20	112	190	2017-11-20 12:57:31		3809114
74	Aliev R. (y4nzi)	26	95	257	2017-11-19 19:09:17		3810182
75	Aliev R. (y4nzi)	26	95	255	2017-10-24 14:34:21		3847897
76	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		3875014
77	Skorohod I. (Dracul4ik)	77	15	156	2017-09-12 19:34:33		3908077
78	Grinkevich D.L. (Dmitrij Grinkevich)	21	109	115	2017-07-21 14:09:37		3984721
79	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4031266
80	Vorob'ev E.V. (Johnnymnemonic)	154	0	138	2017-06-16 09:15:49		4035415
81	F (uff)	64	25	185	2017-06-01 10:27:49		4056943
82	Skorohod I. (Dracul4ik)	77	15	146	2017-05-04 17:54:53		4096816
83	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4158707
84	Skorohod I. (Dracul4ik)	77	15	144	2016-10-10 15:20:14		4393611
85	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4429084
86	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4508307
87	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4638642
88	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		4680742
89	Sivoglazov M.A. (Gaizenberg)	65	24	127	2015-11-28 14:08:52		4850162
90	Maslyaev V.S. (Velmont)	89	11	170	2015-11-06 14:01:20		4881850
91	Sivoglazov M.A. (Gaizenberg)	65	24	261	2015-10-13 23:22:26		4915849
92	Fomichev A.V. (Fomichev)	192	0	101	2015-10-07 11:21:04		4925210
93	Grinkevich D.L. (Dmitrij Grinkevich)	21	109	188	2015-09-19 12:34:48		4951056
94	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		4965360
95	Frolov (dr.shtopor)	80	14	141	2015-09-08 10:04:55		4967046
96	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		4978655
97	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		4982227
98	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		4985558
99	Maslyaev V.S. (Velmont)	89	11	140	2015-07-27 05:27:50		5029243
100	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5030510

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