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SQL exercises

July 27, 09:33 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		25702
3	Slavutinskij V.V. (Vasilko)	430	0	5	2024-04-22 17:26:35		137767
4	Slavutinskij V.V. (Vasilko)	430	0	7	2024-04-22 17:26:21		137767
5	Williams B. (BW)	33	66	141	2024-04-02 11:30:28		166923
6	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		193444
7	Latyntsev N.G. (aks_nsk)	52	37	253	2024-03-05 14:17:51		207076
8	Kurbanoff N.I. (Nariman Kurbanoff)	96	9	305	2024-01-19 17:35:31		273118
9	Kurbanoff N.I. (Nariman Kurbanoff)	96	9	306	2024-01-17 10:21:39		276432
10	Kurbanoff N.I. (Nariman Kurbanoff)	96	9	71	2024-01-15 18:32:03		278822
11	Nikolaenko A.V. (Shadow77)	80	14	135	2023-12-24 02:07:10		311487
12	Komarov A.N. (Shveda Saulya)	46	44	150	2023-11-22 17:11:28		356662
13	Boiko D. (Angellore)	8	237	262	2023-11-17 19:04:36		363749
14	Rudikov E. (cubie)	130	0	138	2023-10-31 17:27:54		388326
15	Komarov A.N. (Shveda Saulya)	46	44	149	2023-05-14 13:36:07		633358
16	Zajtsev V.S. (Sleeping)	20	112	150	2023-04-18 11:40:16		670913
17	Shkarednyj I.N. (Gosha)	34	66	198	2023-03-25 21:10:27		704903
18	Latyntsev N.G. (aks_nsk)	52	37	255	2023-01-12 16:01:39		808892
19	Koptel'tsev V. (selber)	25	95	237	2022-11-06 21:16:51		905057
20	Borisenkov D.V. (xuser)	94	9	173	2022-10-10 15:48:20		944265
21	Lukov D.R. (Gendalf)	233	0	90	2022-07-21 11:18:50		1061175
22	Pavlov A.V. (Anton)	58	29	141	2022-04-10 16:17:39		1207756
23	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1321806
24	Sigankov V.I. (vasilyvanc)	31	74	161	2021-10-17 20:21:01		1459513
25	Fedevych V.I. (labuch_fedev)	35	65	221	2021-07-20 17:09:05		1587865
26	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		1722219
27	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		1764405
28	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		1768153
29	Kozharinov A. (bubala)	196	0	10	2020-09-30 09:55:07		2010219
30	Samarin A. (not.yet.sql.master)	134	0	112	2020-08-14 15:12:10		2077582
31	Koptel'tsev V. (selber)	25	95	259	2020-06-24 00:22:07		2151912
32	Samarin A. (not.yet.sql.master)	134	0	138	2020-05-09 21:48:04		2216866
33	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		2224836
34	Fedevych V.I. (labuch_fedev)	35	65	226	2020-04-06 22:22:48		2264351
35	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2288078
36	Fokin A. (Vizitor )	42	52	217	2019-08-18 21:46:14		2598467
37	Bazavluk M. (DoNotLook)	92	9	141	2019-07-30 23:04:12		2625749
38	Romanov K.Yu. (kostik)	292	0	12	2019-07-25 08:42:10		2633812
39	Kordyum A. (alko58)	215	0	12	2019-07-12 15:58:52		2652095
40	Pavlov A.V. (Anton)	58	29	168	2019-06-12 01:20:21		2696173
41	Mal'tsev A.V. (Palkin)	108	8	218	2019-03-06 20:25:17		2836148
42	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		2934416
43	Grishunin M.F. (MikhailFG)	88	10	144	2018-12-26 09:36:27		2937597
44	Shindin A.V. (AlShin)	23	99	45	2018-09-18 15:45:28		3079788
45	Skorohod I. (Dracul4ik)	75	15	45	2018-08-07 14:38:23		3140335
46	Voevutskij S.A. (SergLK)	199	0	45	2018-07-01 13:19:14		3193694
47	Zyrin V.E. (Vezyr)	515	0	29	2018-05-29 14:14:19		3241159
48	Chebykin D. (GriGrim)	37	62	228	2018-03-26 15:47:45		3333226
49	Shkarednyj I.N. (Gosha)	34	66	151	2018-03-23 22:38:32		3337135
50	Boiko D. (Angellore)	8	237	229	2018-03-23 21:19:51		3337214
51	Azbel' E.G. (enull)	74	15	148	2018-03-08 04:10:21		3359843
52	Shkarednyj I.N. (Gosha)	34	66	147	2018-02-26 08:13:30		3374000
53	F (uff)	63	25	95	2018-01-22 15:57:03		3423937
54	Aliev R. (y4nzi)	26	95	259	2017-12-17 18:48:39		3475605
55	Kordyum A. (alko58)	215	0	101	2017-11-21 18:18:43		3513075
56	Zajtsev V.S. (Sleeping)	20	112	190	2017-11-20 12:57:31		3514836
57	Aliev R. (y4nzi)	26	95	257	2017-11-19 19:09:17		3515904
58	Aliev R. (y4nzi)	26	95	255	2017-10-24 14:34:21		3553619
59	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		3580736
60	Skorohod I. (Dracul4ik)	75	15	156	2017-09-12 19:34:33		3613799
61	Grinkevich D.L. (Dmitrij Grinkevich)	21	109	115	2017-07-21 14:09:37		3690444
62	Bezhaev A.Yu. (Baser)	7	240	220	2017-06-19 06:24:54		3736989
63	Vorob'ev E.V. (Johnnymnemonic)	149	0	138	2017-06-16 09:15:49		3741138
64	F (uff)	63	25	185	2017-06-01 10:27:49		3762666
65	Skorohod I. (Dracul4ik)	75	15	146	2017-05-04 17:54:53		3802539
66	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		3864430
67	Skorohod I. (Dracul4ik)	75	15	144	2016-10-10 15:20:14		4099333
68	Sysoev A.V. (Sysa)	48	39	165	2016-09-16 00:07:24		4134806
69	Sysoev A.V. (Sysa)	48	39	168	2016-07-22 23:44:07		4214030
70	Karasyova N.V. (vlksm)	10	225	217	2016-04-23 11:28:43		4344365
71	Titovskij P.S. (kli3ma)	45	45	164	2016-03-25 05:49:30		4386464
72	Sivoglazov M.A. (Gaizenberg)	64	24	127	2015-11-28 14:08:52		4555885
73	Maslyaev V.S. (Velmont)	86	11	170	2015-11-06 14:01:20		4587572
74	Sivoglazov M.A. (Gaizenberg)	64	24	261	2015-10-13 23:22:26		4621571
75	Fomichev A.V. (Fomichev)	187	0	101	2015-10-07 11:21:04		4630933
76	Grinkevich D.L. (Dmitrij Grinkevich)	21	109	188	2015-09-19 12:34:48		4656779
77	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		4671083
78	Frolov (dr.shtopor)	78	14	141	2015-09-08 10:04:55		4672769
79	Varenikov D.M. (Dmitriy Varenikov)	18	125	217	2015-08-31 08:35:37		4684378
80	Chebykin D. (GriGrim)	37	62	217	2015-08-28 21:04:30		4687949
81	Halushka B. (halushka)	44	46	211	2015-08-26 13:33:28		4691280
82	Maslyaev V.S. (Velmont)	86	11	140	2015-07-27 05:27:50		4734966
83	Khromulyak O.M. (ChOleg)	117	5	150	2015-07-26 08:20:51		4736233
84	Chebykin D. (GriGrim)	37	62	216	2015-07-20 09:39:02		4744795
85	Halushka B. (halushka)	44	46	143	2015-07-13 15:28:55		4754525
86	Halushka B. (halushka)	44	46	204	2015-07-07 15:42:03		4763152
87	Skorohod I. (Dracul4ik)	75	15	256	2015-01-28 15:03:11		4993590
88	Skorohod I. (Dracul4ik)	75	15	252	2015-01-27 11:56:41		4995217
89	Sysoev A.V. (Sysa)	48	39	143	2014-12-25 01:16:19		5043377
90	Grishin (alvigr)	76	15	185	2014-12-05 11:56:29		5071537
91	Fajnberg M.L. (burnall)	70	21	122	2014-10-31 12:46:14		5121887
92	Kabanets E.G. (azkaban)	90	9	209	2014-09-27 01:00:23		5171553
93	Sivoglazov M.A. (Gaizenberg)	64	24	178	2014-08-26 23:17:37		5216296
94	Perfilov B.V. (B o r i s)	97	9	29	2014-02-23 19:20:39		5481493
95	Utyonkov M.N. (=Maxim=)	47	42	255	2014-02-03 12:39:35		5510694
96	Shaymardanov M.M. (xLiSPirit)	38	62	147	2013-12-11 13:22:21		5588411
97	Martynyuk (Wiedzmen)	55	32	135	2013-11-26 20:27:27		5609586
98	Chebykin D. (GriGrim)	37	62	255	2013-11-07 15:23:46		5637250
99	Titovskij P.S. (kli3ma)	45	45	203	2013-10-31 10:01:45		5647652
100	Martynyuk (Wiedzmen)	55	32	185	2013-10-22 15:41:24		5660272

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