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SQL exercises

October 12, 01:40 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: 15173

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	20	119	181	2025-09-06 14:04:35	2025-10-06 15:31:50	43287
2	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		133948
3	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		255668
4	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		329724
5	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		337823
6	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		368071
7	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		380259
8	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		528112
9	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		529420
10	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		552171
11	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		579611
12	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		661709
13	Slavutinskij V.V. (Vasilko)	447	0	5	2024-04-22 17:26:35		773774
14	Slavutinskij V.V. (Vasilko)	447	0	7	2024-04-22 17:26:21		773774
15	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		802930
16	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		829451
17	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		843083
18	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		909125
19	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		912439
20	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		914829
21	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		947494
22	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		992669
23	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		999756
24	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1024333
25	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1269365
26	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1306920
27	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1340910
28	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1444899
29	Koptel'tsev V. (selber)	21	116	237	2022-11-06 21:16:51		1541064
30	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1580272
31	Lukov D.R. (Gendalf)	240	0	90	2022-07-21 11:18:50		1697182
32	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1843763
33	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1957813
34	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2095520
35	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2223872
36	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2358226
37	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2400412
38	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2404160
39	Kozharinov A. (bubala)	207	0	10	2020-09-30 09:55:07		2646226
40	Samarin A. (not.yet.sql.master)	141	0	112	2020-08-14 15:12:10		2713589
41	Koptel'tsev V. (selber)	21	116	259	2020-06-24 00:22:07		2787919
42	Samarin A. (not.yet.sql.master)	141	0	138	2020-05-09 21:48:04		2852873
43	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2860843
44	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2900358
45	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2924085
46	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3234474
47	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3261757
48	Romanov K.Yu. (kostik)	306	0	12	2019-07-25 08:42:10		3269819
49	Kordyum A. (alko58)	224	0	12	2019-07-12 15:58:52		3288102
50	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3332180
51	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3472155
52	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3570423
53	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3573604
54	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3715795
55	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3776342
56	Voevutskij S.A. (SergLK)	212	0	45	2018-07-01 13:19:14		3829701
57	Zyrin V.E. (Vezyr)	538	0	29	2018-05-29 14:14:19		3877166
58	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3969233
59	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3973142
60	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3973221
61	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		3995850
62	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		4010007
63	F (uff)	65	25	95	2018-01-22 15:57:03		4059944
64	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4111612
65	Kordyum A. (alko58)	224	0	101	2017-11-21 18:18:43		4149082
66	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4150843
67	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4151911
68	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4189626
69	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4216743
70	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4249806
71	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4326451
72	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4372996
73	Vorob'ev E.V. (Johnnymnemonic)	159	0	138	2017-06-16 09:15:49		4377145
74	F (uff)	65	25	185	2017-06-01 10:27:49		4398673
75	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4438546
76	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4500437
77	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4735340
78	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4770813
79	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4850037
80	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4980372
81	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5022471
82	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5191892
83	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5223579
84	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5257578
85	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5266940
86	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5292786
87	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5307090
88	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5308776
89	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		5320385
90	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5323956
91	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5327287
92	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5370973
93	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5372240
94	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5380802
95	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5390532
96	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5399159
97	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5629598
98	Skorohod I. (Dracul4ik)	78	15	252	2015-01-27 11:56:41		5631224
99	Sysoev A.V. (Sysa)	49	39	143	2014-12-25 01:16:19		5679384
100	Grishin (alvigr)	79	15	185	2014-12-05 11:56:29		5707544

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