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SQL exercises

February 21, 04:50 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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Recent leaders activity

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: 15364

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Polyakov V.M. (rock_4)	134	0	138	2026-02-20 17:03:21		707
2	Polyakov V.M. (rock_4)	134	0	137	2026-02-13 11:01:59	2026-02-20 16:48:54	10427
3	Komarov A.N. (Shveda Saulya)	41	59	157	2024-09-04 13:29:47	2026-02-19 14:50:22	767601
4	Polyakov V.M. (rock_4)	134	0	135	2026-02-09 12:37:00	2026-02-13 10:46:31	5650
5	Komarov A.N. (Shveda Saulya)	41	59	150	2023-11-22 17:11:28	2026-02-13 01:49:19	1171238
6	Sarkis'yan G. (gennadi_s)	16	149	194	2026-02-10 15:42:58		15188
7	Polyakov V.M. (rock_4)	134	0	134	2026-01-29 14:49:41	2026-02-09 11:35:19	15646
8	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		36675
9	Lukov D.R. (Gendalf)	244	0	32	2025-12-05 01:36:21		112514
10	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		324218
11	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		445938
12	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		528093
13	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		558341
14	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		570529
15	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		718382
16	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		719690
17	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		742441
18	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		851979
19	Slavutinskij V.V. (Vasilko)	453	0	5	2024-04-22 17:26:35		964044
20	Slavutinskij V.V. (Vasilko)	453	0	7	2024-04-22 17:26:21		964044
21	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		993200
22	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		1019721
23	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		1033353
24	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1099395
25	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1102709
26	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1105099
27	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1137764
28	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1190026
29	Rudikov E. (cubie)	135	0	138	2023-10-31 17:27:54		1214603
30	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1497190
31	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1531180
32	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1635169
33	Koptel'tsev V. (selber)	21	119	237	2022-11-06 21:16:51		1731334
34	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1770542
35	Lukov D.R. (Gendalf)	244	0	90	2022-07-21 11:18:50		1887452
36	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2034033
37	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2285790
38	Fedevych V.I. (labuch_fedev)	37	65	221	2021-07-20 17:09:05		2414142
39	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2548496
40	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2590682
41	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2594430
42	Kozharinov A. (bubala)	209	0	10	2020-09-30 09:55:07		2836496
43	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		2903859
44	Koptel'tsev V. (selber)	21	119	259	2020-06-24 00:22:07		2978189
45	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		3043143
46	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		3051113
47	Fedevych V.I. (labuch_fedev)	37	65	226	2020-04-06 22:22:48		3090628
48	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3114355
49	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3424744
50	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3452027
51	Romanov K.Yu. (kostik)	309	0	12	2019-07-25 08:42:10		3460089
52	Kordyum A. (alko58)	227	0	12	2019-07-12 15:58:52		3478372
53	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3522450
54	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3662425
55	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3760693
56	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3763874
57	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3906065
58	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3966612
59	Voevutskij S.A. (SergLK)	215	0	45	2018-07-01 13:19:14		4019971
60	Zyrin V.E. (Vezyr)	544	0	29	2018-05-29 14:14:19		4067436
61	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		4159503
62	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4163412
63	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4163491
64	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4186120
65	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4200277
66	F (uff)	65	25	95	2018-01-22 15:57:03		4250214
67	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4301882
68	Kordyum A. (alko58)	227	0	101	2017-11-21 18:18:43		4339352
69	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4341113
70	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4342181
71	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4379896
72	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4407013
73	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4440076
74	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4516721
75	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4563266
76	Vorob'ev E.V. (Johnnymnemonic)	161	0	138	2017-06-16 09:15:49		4567415
77	F (uff)	65	25	185	2017-06-01 10:27:49		4588943
78	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4628816
79	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4690707
80	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4925610
81	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4961083
82	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		5040307
83	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5170642
84	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5212741
85	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5382162
86	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5413849
87	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5447848
88	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5457210
89	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5483056
90	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5497360
91	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5499046
92	Varenikov D.M. (Dmitriy Varenikov)	19	128	263	2015-08-31 08:35:37		5510655
93	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5514226
94	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5517557
95	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5561243
96	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5562510
97	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5571072
98	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5580802
99	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5589429
100	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5819868

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