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SQL exercises

May 23, 21:23 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: 15090

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Chernov D.V. (Kursist)	2	262	303	2026-05-23 20:49:50		33
2	Koptel'tsev V. (selber)	19	129	303	2026-05-23 20:23:43		59
3	Krasovskij E.A. (pegoopik)	1	262	303	2026-05-23 15:29:26	2026-05-23 19:54:13	265
4	Makarov I.A. (_Bkmz_)	56	32	195	2026-05-23 10:27:06	2026-05-23 15:11:29	284
5	Sarkis'yan G. (gennadi_s)	15	170	303	2026-05-23 13:24:38	2026-05-23 13:24:42	0
6	Vyazovetskov A.S. (alex_v)	11	223	155	2026-05-22 11:18:23		2045
7	Filippkin D.V. (_dimon_)	3	259	24	2026-05-21 10:12:47	2026-05-21 10:19:45	7
8	Vyazovetskov A.S. (alex_v)	11	223	230	2026-05-18 12:59:52	2026-05-20 15:56:52	3057
9	Makarov I.A. (_Bkmz_)	56	32	24	2026-05-16 11:11:27	2026-05-16 11:27:42	16
10	Williams B. (BW)	35	66	24	2026-05-15 13:25:32		11998
11	Vyazovetskov A.S. (alex_v)	11	223	220	2026-05-13 11:51:48	2026-05-14 20:04:14	1932
12	Vyazovetskov A.S. (alex_v)	11	223	225	2026-05-12 11:55:53	2026-05-12 16:20:41	265
13	Komarov A.N. (Shveda Saulya)	37	65	160	2026-05-09 13:24:21		20639
14	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		33698
15	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		43926
16	Vyazovetskov A.S. (alex_v)	11	223	264	2026-04-22 19:15:17		44768
17	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		75480
18	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		168707
19	Lukov D.R. (Gendalf)	245	0	32	2025-12-05 01:36:21		244547
20	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		456250
21	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		577971
22	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		660125
23	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		690373
24	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		702562
25	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		850414
26	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		851723
27	Frolov K.A. (Murderface_)	134	0	138	2024-09-23 14:49:59		874473
28	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		984012
29	Slavutinskij V.V. (Vasilko)	454	0	5	2024-04-22 17:26:35		1096077
30	Slavutinskij V.V. (Vasilko)	454	0	7	2024-04-22 17:26:21		1096077
31	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1125233
32	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1151754
33	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		1165385
34	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1231428
35	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1234742
36	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1237131
37	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1269796
38	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1322059
39	Rudikov E. (cubie)	135	0	138	2023-10-31 17:27:54		1346635
40	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1663213
41	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1767202
42	Koptel'tsev V. (selber)	19	129	237	2022-11-06 21:16:51		1863366
43	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		1902575
44	Lukov D.R. (Gendalf)	245	0	90	2022-07-21 11:18:50		2019484
45	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2166066
46	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2417822
47	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2546174
48	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2680528
49	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2722715
50	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2726462
51	Kozharinov A. (bubala)	212	0	10	2020-09-30 09:55:07		2968528
52	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		3035891
53	Koptel'tsev V. (selber)	19	129	259	2020-06-24 00:22:07		3110221
54	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		3175175
55	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		3183146
56	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3222660
57	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3246388
58	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3556777
59	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3584059
60	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3592121
61	Kordyum A. (alko58)	230	0	12	2019-07-12 15:58:52		3610404
62	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3654483
63	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3794458
64	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		3892726
65	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		3895907
66	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4038098
67	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4098645
68	Voevutskij S.A. (SergLK)	218	0	45	2018-07-01 13:19:14		4152004
69	Zyrin V.E. (Vezyr)	549	0	29	2018-05-29 14:14:19		4199469
70	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4291535
71	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4295445
72	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4295523
73	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4318153
74	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4332310
75	F (uff)	65	25	95	2018-01-22 15:57:03		4382246
76	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4433915
77	Kordyum A. (alko58)	230	0	101	2017-11-21 18:18:43		4471384
78	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4473146
79	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4474214
80	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4511929
81	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4539046
82	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4572109
83	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4648754
84	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4695298
85	Vorob'ev E.V. (Johnnymnemonic)	163	0	138	2017-06-16 09:15:49		4699447
86	F (uff)	65	25	185	2017-06-01 10:27:49		4720975
87	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4760848
88	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4822739
89	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5057643
90	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		5093116
91	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		5172339
92	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5302674
93	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5344774
94	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5514194
95	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5545882
96	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5579881
97	Fomichev A.V. (Fomichev)	199	0	101	2015-10-07 11:21:04		5589242
98	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5615088
99	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5629392
100	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5631078

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