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SQL exercises

July 27, 09:42 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: 14675

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Komarov A.N. (Shveda Saulya)	46	44	154	2024-05-03 17:30:12	2024-07-19 02:07:37	109957
2	Zajtsev V.S. (Sleeping)	20	112	164	2024-07-09 13:11:22		25711
3	Slavutinskij V.V. (Vasilko)	430	0	5	2024-04-22 17:26:35		137776
4	Slavutinskij V.V. (Vasilko)	430	0	7	2024-04-22 17:26:21		137776
5	Williams B. (BW)	33	66	141	2024-04-02 11:30:28		166932
6	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		193452
7	Latyntsev N.G. (aks_nsk)	52	37	253	2024-03-05 14:17:51		207084
8	Kurbanoff N.I. (Nariman Kurbanoff)	96	9	305	2024-01-19 17:35:31		273127
9	Kurbanoff N.I. (Nariman Kurbanoff)	96	9	306	2024-01-17 10:21:39		276440
10	Kurbanoff N.I. (Nariman Kurbanoff)	96	9	71	2024-01-15 18:32:03		278830
11	Nikolaenko A.V. (Shadow77)	80	14	135	2023-12-24 02:07:10		311495
12	Komarov A.N. (Shveda Saulya)	46	44	150	2023-11-22 17:11:28		356671
13	Boiko D. (Angellore)	8	237	262	2023-11-17 19:04:36		363757
14	Rudikov E. (cubie)	130	0	138	2023-10-31 17:27:54		388334
15	Komarov A.N. (Shveda Saulya)	46	44	149	2023-05-14 13:36:07		633366
16	Zajtsev V.S. (Sleeping)	20	112	150	2023-04-18 11:40:16		670922
17	Shkarednyj I.N. (Gosha)	34	66	198	2023-03-25 21:10:27		704912
18	Latyntsev N.G. (aks_nsk)	52	37	255	2023-01-12 16:01:39		808900
19	Koptel'tsev V. (selber)	25	95	237	2022-11-06 21:16:51		905065
20	Borisenkov D.V. (xuser)	94	9	173	2022-10-10 15:48:20		944274
21	Lukov D.R. (Gendalf)	233	0	90	2022-07-21 11:18:50		1061183
22	Pavlov A.V. (Anton)	58	29	141	2022-04-10 16:17:39		1207764
23	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1321814
24	Sigankov V.I. (vasilyvanc)	31	74	161	2021-10-17 20:21:01		1459521
25	Fedevych V.I. (labuch_fedev)	35	65	221	2021-07-20 17:09:05		1587873
26	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		1722227
27	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		1764413
28	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		1768161
29	Kozharinov A. (bubala)	196	0	10	2020-09-30 09:55:07		2010227
30	Samarin A. (not.yet.sql.master)	134	0	112	2020-08-14 15:12:10		2077590
31	Koptel'tsev V. (selber)	25	95	259	2020-06-24 00:22:07		2151920
32	Samarin A. (not.yet.sql.master)	134	0	138	2020-05-09 21:48:04		2216874
33	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		2224845
34	Fedevych V.I. (labuch_fedev)	35	65	226	2020-04-06 22:22:48		2264359
35	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2288087
36	Fokin A. (Vizitor )	42	52	217	2019-08-18 21:46:14		2598476
37	Bazavluk M. (DoNotLook)	92	9	141	2019-07-30 23:04:12		2625758
38	Romanov K.Yu. (kostik)	292	0	12	2019-07-25 08:42:10		2633820
39	Kordyum A. (alko58)	215	0	12	2019-07-12 15:58:52		2652103
40	Pavlov A.V. (Anton)	58	29	168	2019-06-12 01:20:21		2696182
41	Mal'tsev A.V. (Palkin)	108	8	218	2019-03-06 20:25:17		2836157
42	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		2934425
43	Grishunin M.F. (MikhailFG)	88	10	144	2018-12-26 09:36:27		2937606
44	Shindin A.V. (AlShin)	23	99	45	2018-09-18 15:45:28		3079797
45	Skorohod I. (Dracul4ik)	75	15	45	2018-08-07 14:38:23		3140344
46	Voevutskij S.A. (SergLK)	199	0	45	2018-07-01 13:19:14		3193703
47	Zyrin V.E. (Vezyr)	515	0	29	2018-05-29 14:14:19		3241168
48	Chebykin D. (GriGrim)	37	62	228	2018-03-26 15:47:45		3333234
49	Shkarednyj I.N. (Gosha)	34	66	151	2018-03-23 22:38:32		3337144
50	Boiko D. (Angellore)	8	237	229	2018-03-23 21:19:51		3337222
51	Azbel' E.G. (enull)	74	15	148	2018-03-08 04:10:21		3359852
52	Shkarednyj I.N. (Gosha)	34	66	147	2018-02-26 08:13:30		3374009
53	F (uff)	63	25	95	2018-01-22 15:57:03		3423945
54	Aliev R. (y4nzi)	26	95	259	2017-12-17 18:48:39		3475613
55	Kordyum A. (alko58)	215	0	101	2017-11-21 18:18:43		3513083
56	Zajtsev V.S. (Sleeping)	20	112	190	2017-11-20 12:57:31		3514845
57	Aliev R. (y4nzi)	26	95	257	2017-11-19 19:09:17		3515913
58	Aliev R. (y4nzi)	26	95	255	2017-10-24 14:34:21		3553628
59	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		3580745
60	Skorohod I. (Dracul4ik)	75	15	156	2017-09-12 19:34:33		3613808
61	Grinkevich D.L. (Dmitrij Grinkevich)	21	109	115	2017-07-21 14:09:37		3690452
62	Bezhaev A.Yu. (Baser)	7	240	220	2017-06-19 06:24:54		3736997
63	Vorob'ev E.V. (Johnnymnemonic)	149	0	138	2017-06-16 09:15:49		3741146
64	F (uff)	63	25	185	2017-06-01 10:27:49		3762674
65	Skorohod I. (Dracul4ik)	75	15	146	2017-05-04 17:54:53		3802547
66	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		3864438
67	Skorohod I. (Dracul4ik)	75	15	144	2016-10-10 15:20:14		4099342
68	Sysoev A.V. (Sysa)	48	39	165	2016-09-16 00:07:24		4134815
69	Sysoev A.V. (Sysa)	48	39	168	2016-07-22 23:44:07		4214038
70	Karasyova N.V. (vlksm)	10	225	217	2016-04-23 11:28:43		4344373
71	Titovskij P.S. (kli3ma)	45	45	164	2016-03-25 05:49:30		4386473
72	Sivoglazov M.A. (Gaizenberg)	64	24	127	2015-11-28 14:08:52		4555893
73	Maslyaev V.S. (Velmont)	86	11	170	2015-11-06 14:01:20		4587581
74	Sivoglazov M.A. (Gaizenberg)	64	24	261	2015-10-13 23:22:26		4621580
75	Fomichev A.V. (Fomichev)	187	0	101	2015-10-07 11:21:04		4630941
76	Grinkevich D.L. (Dmitrij Grinkevich)	21	109	188	2015-09-19 12:34:48		4656787
77	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		4671091
78	Frolov (dr.shtopor)	78	14	141	2015-09-08 10:04:55		4672777
79	Varenikov D.M. (Dmitriy Varenikov)	18	125	217	2015-08-31 08:35:37		4684386
80	Chebykin D. (GriGrim)	37	62	217	2015-08-28 21:04:30		4687958
81	Halushka B. (halushka)	44	46	211	2015-08-26 13:33:28		4691289
82	Maslyaev V.S. (Velmont)	86	11	140	2015-07-27 05:27:50		4734974
83	Khromulyak O.M. (ChOleg)	117	5	150	2015-07-26 08:20:51		4736241
84	Chebykin D. (GriGrim)	37	62	216	2015-07-20 09:39:02		4744803
85	Halushka B. (halushka)	44	46	143	2015-07-13 15:28:55		4754533
86	Halushka B. (halushka)	44	46	204	2015-07-07 15:42:03		4763160
87	Skorohod I. (Dracul4ik)	75	15	256	2015-01-28 15:03:11		4993599
88	Skorohod I. (Dracul4ik)	75	15	252	2015-01-27 11:56:41		4995225
89	Sysoev A.V. (Sysa)	48	39	143	2014-12-25 01:16:19		5043386
90	Grishin (alvigr)	76	15	185	2014-12-05 11:56:29		5071546
91	Fajnberg M.L. (burnall)	70	21	122	2014-10-31 12:46:14		5121896
92	Kabanets E.G. (azkaban)	90	9	209	2014-09-27 01:00:23		5171562
93	Sivoglazov M.A. (Gaizenberg)	64	24	178	2014-08-26 23:17:37		5216304
94	Perfilov B.V. (B o r i s)	97	9	29	2014-02-23 19:20:39		5481501
95	Utyonkov M.N. (=Maxim=)	47	42	255	2014-02-03 12:39:35		5510703
96	Shaymardanov M.M. (xLiSPirit)	38	62	147	2013-12-11 13:22:21		5588420
97	Martynyuk (Wiedzmen)	55	32	135	2013-11-26 20:27:27		5609595
98	Chebykin D. (GriGrim)	37	62	255	2013-11-07 15:23:46		5637258
99	Titovskij P.S. (kli3ma)	45	45	203	2013-10-31 10:01:45		5647660
100	Martynyuk (Wiedzmen)	55	32	185	2013-10-22 15:41:24		5660281

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