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SQL exercises

July 27, 13:06 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: 14677

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		25915
3	Slavutinskij V.V. (Vasilko)	430	0	5	2024-04-22 17:26:35		137979
4	Slavutinskij V.V. (Vasilko)	430	0	7	2024-04-22 17:26:21		137980
5	Williams B. (BW)	33	66	141	2024-04-02 11:30:28		167136
6	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		193656
7	Latyntsev N.G. (aks_nsk)	52	37	253	2024-03-05 14:17:51		207288
8	Kurbanoff N.I. (Nariman Kurbanoff)	96	9	305	2024-01-19 17:35:31		273331
9	Kurbanoff N.I. (Nariman Kurbanoff)	96	9	306	2024-01-17 10:21:39		276644
10	Kurbanoff N.I. (Nariman Kurbanoff)	96	9	71	2024-01-15 18:32:03		279034
11	Nikolaenko A.V. (Shadow77)	80	14	135	2023-12-24 02:07:10		311699
12	Komarov A.N. (Shveda Saulya)	46	44	150	2023-11-22 17:11:28		356875
13	Boiko D. (Angellore)	8	237	262	2023-11-17 19:04:36		363961
14	Rudikov E. (cubie)	130	0	138	2023-10-31 17:27:54		388538
15	Komarov A.N. (Shveda Saulya)	46	44	149	2023-05-14 13:36:07		633570
16	Zajtsev V.S. (Sleeping)	20	112	150	2023-04-18 11:40:16		671126
17	Shkarednyj I.N. (Gosha)	34	66	198	2023-03-25 21:10:27		705116
18	Latyntsev N.G. (aks_nsk)	52	37	255	2023-01-12 16:01:39		809104
19	Koptel'tsev V. (selber)	25	95	237	2022-11-06 21:16:51		905269
20	Borisenkov D.V. (xuser)	94	9	173	2022-10-10 15:48:20		944478
21	Lukov D.R. (Gendalf)	233	0	90	2022-07-21 11:18:50		1061387
22	Pavlov A.V. (Anton)	58	29	141	2022-04-10 16:17:39		1207968
23	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1322018
24	Sigankov V.I. (vasilyvanc)	31	74	161	2021-10-17 20:21:01		1459725
25	Fedevych V.I. (labuch_fedev)	35	65	221	2021-07-20 17:09:05		1588077
26	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		1722431
27	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		1764617
28	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		1768365
29	Kozharinov A. (bubala)	196	0	10	2020-09-30 09:55:07		2010431
30	Samarin A. (not.yet.sql.master)	134	0	112	2020-08-14 15:12:10		2077794
31	Koptel'tsev V. (selber)	25	95	259	2020-06-24 00:22:07		2152124
32	Samarin A. (not.yet.sql.master)	134	0	138	2020-05-09 21:48:04		2217078
33	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		2225049
34	Fedevych V.I. (labuch_fedev)	35	65	226	2020-04-06 22:22:48		2264563
35	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2288291
36	Fokin A. (Vizitor )	42	52	217	2019-08-18 21:46:14		2598680
37	Bazavluk M. (DoNotLook)	92	9	141	2019-07-30 23:04:12		2625962
38	Romanov K.Yu. (kostik)	292	0	12	2019-07-25 08:42:10		2634024
39	Kordyum A. (alko58)	215	0	12	2019-07-12 15:58:52		2652307
40	Pavlov A.V. (Anton)	58	29	168	2019-06-12 01:20:21		2696386
41	Mal'tsev A.V. (Palkin)	108	8	218	2019-03-06 20:25:17		2836361
42	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		2934629
43	Grishunin M.F. (MikhailFG)	88	10	144	2018-12-26 09:36:27		2937810
44	Shindin A.V. (AlShin)	23	99	45	2018-09-18 15:45:28		3080001
45	Skorohod I. (Dracul4ik)	75	15	45	2018-08-07 14:38:23		3140548
46	Voevutskij S.A. (SergLK)	199	0	45	2018-07-01 13:19:14		3193907
47	Zyrin V.E. (Vezyr)	515	0	29	2018-05-29 14:14:19		3241372
48	Chebykin D. (GriGrim)	37	62	228	2018-03-26 15:47:45		3333438
49	Shkarednyj I.N. (Gosha)	34	66	151	2018-03-23 22:38:32		3337348
50	Boiko D. (Angellore)	8	237	229	2018-03-23 21:19:51		3337426
51	Azbel' E.G. (enull)	74	15	148	2018-03-08 04:10:21		3360056
52	Shkarednyj I.N. (Gosha)	34	66	147	2018-02-26 08:13:30		3374213
53	F (uff)	63	25	95	2018-01-22 15:57:03		3424149
54	Aliev R. (y4nzi)	26	95	259	2017-12-17 18:48:39		3475817
55	Kordyum A. (alko58)	215	0	101	2017-11-21 18:18:43		3513287
56	Zajtsev V.S. (Sleeping)	20	112	190	2017-11-20 12:57:31		3515049
57	Aliev R. (y4nzi)	26	95	257	2017-11-19 19:09:17		3516117
58	Aliev R. (y4nzi)	26	95	255	2017-10-24 14:34:21		3553832
59	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		3580949
60	Skorohod I. (Dracul4ik)	75	15	156	2017-09-12 19:34:33		3614012
61	Grinkevich D.L. (Dmitrij Grinkevich)	21	109	115	2017-07-21 14:09:37		3690656
62	Bezhaev A.Yu. (Baser)	7	240	220	2017-06-19 06:24:54		3737201
63	Vorob'ev E.V. (Johnnymnemonic)	149	0	138	2017-06-16 09:15:49		3741350
64	F (uff)	63	25	185	2017-06-01 10:27:49		3762878
65	Skorohod I. (Dracul4ik)	75	15	146	2017-05-04 17:54:53		3802751
66	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		3864642
67	Skorohod I. (Dracul4ik)	75	15	144	2016-10-10 15:20:14		4099546
68	Sysoev A.V. (Sysa)	48	39	165	2016-09-16 00:07:24		4135019
69	Sysoev A.V. (Sysa)	48	39	168	2016-07-22 23:44:07		4214242
70	Karasyova N.V. (vlksm)	10	225	217	2016-04-23 11:28:43		4344577
71	Titovskij P.S. (kli3ma)	45	45	164	2016-03-25 05:49:30		4386677
72	Sivoglazov M.A. (Gaizenberg)	64	24	127	2015-11-28 14:08:52		4556097
73	Maslyaev V.S. (Velmont)	86	11	170	2015-11-06 14:01:20		4587785
74	Sivoglazov M.A. (Gaizenberg)	64	24	261	2015-10-13 23:22:26		4621784
75	Fomichev A.V. (Fomichev)	187	0	101	2015-10-07 11:21:04		4631145
76	Grinkevich D.L. (Dmitrij Grinkevich)	21	109	188	2015-09-19 12:34:48		4656991
77	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		4671295
78	Frolov (dr.shtopor)	78	14	141	2015-09-08 10:04:55		4672981
79	Varenikov D.M. (Dmitriy Varenikov)	18	125	217	2015-08-31 08:35:37		4684590
80	Chebykin D. (GriGrim)	37	62	217	2015-08-28 21:04:30		4688162
81	Halushka B. (halushka)	44	46	211	2015-08-26 13:33:28		4691493
82	Maslyaev V.S. (Velmont)	86	11	140	2015-07-27 05:27:50		4735178
83	Khromulyak O.M. (ChOleg)	117	5	150	2015-07-26 08:20:51		4736445
84	Chebykin D. (GriGrim)	37	62	216	2015-07-20 09:39:02		4745007
85	Halushka B. (halushka)	44	46	143	2015-07-13 15:28:55		4754737
86	Halushka B. (halushka)	44	46	204	2015-07-07 15:42:03		4763364
87	Skorohod I. (Dracul4ik)	75	15	256	2015-01-28 15:03:11		4993803
88	Skorohod I. (Dracul4ik)	75	15	252	2015-01-27 11:56:41		4995429
89	Sysoev A.V. (Sysa)	48	39	143	2014-12-25 01:16:19		5043590
90	Grishin (alvigr)	76	15	185	2014-12-05 11:56:29		5071750
91	Fajnberg M.L. (burnall)	70	21	122	2014-10-31 12:46:14		5122100
92	Kabanets E.G. (azkaban)	90	9	209	2014-09-27 01:00:23		5171766
93	Sivoglazov M.A. (Gaizenberg)	64	24	178	2014-08-26 23:17:37		5216508
94	Perfilov B.V. (B o r i s)	97	9	29	2014-02-23 19:20:39		5481705
95	Utyonkov M.N. (=Maxim=)	47	42	255	2014-02-03 12:39:35		5510906
96	Shaymardanov M.M. (xLiSPirit)	38	62	147	2013-12-11 13:22:21		5588624
97	Martynyuk (Wiedzmen)	55	32	135	2013-11-26 20:27:27		5609799
98	Chebykin D. (GriGrim)	37	62	255	2013-11-07 15:23:46		5637462
99	Titovskij P.S. (kli3ma)	45	45	203	2013-10-31 10:01:45		5647864
100	Martynyuk (Wiedzmen)	55	32	185	2013-10-22 15:41:24		5660485

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