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SQL exercises

July 31, 19:48 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: 15142

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Chernov D.V. (Kursist)	2	259	240	2025-07-26 20:49:03		7140
2	Sarkis'yan G. (gennadi_s)	24	106	177	2025-07-23 13:53:32	2025-07-26 14:19:28	4346
3	Krasovskij E.A. (pegoopik)	1	262	240	2025-07-25 19:02:52	2025-07-25 19:03:24	1
4	Makarov I.A. (_Bkmz_)	59	29	174	2025-07-20 09:49:05	2025-07-20 13:05:03	196
5	Makarov I.A. (_Bkmz_)	59	29	202	2025-07-19 10:07:28	2025-07-19 12:15:02	128
6	Sarkis'yan G. (gennadi_s)	24	106	176	2025-07-14 10:47:08	2025-07-18 13:39:50	5933
7	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		29916
8	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		151636
9	Fomichev A.V. (Fomichev)	196	0	7	2025-02-25 02:16:37		225692
10	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		233791
11	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		264039
12	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		276227
13	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		424080
14	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		425388
15	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		448139
16	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		475579
17	Zajtsev V.S. (Sleeping)	21	112	164	2024-07-09 13:11:22		557677
18	Slavutinskij V.V. (Vasilko)	446	0	5	2024-04-22 17:26:35		669742
19	Slavutinskij V.V. (Vasilko)	446	0	7	2024-04-22 17:26:21		669742
20	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		698898
21	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		725419
22	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		739051
23	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		805093
24	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		808407
25	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		810797
26	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		843461
27	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		888637
28	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		895724
29	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		920301
30	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1165333
31	Zajtsev V.S. (Sleeping)	21	112	150	2023-04-18 11:40:16		1202888
32	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1236878
33	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1340867
34	Koptel'tsev V. (selber)	20	113	237	2022-11-06 21:16:51		1437032
35	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1476240
36	Lukov D.R. (Gendalf)	240	0	90	2022-07-21 11:18:50		1593150
37	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1739731
38	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1853781
39	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		1991488
40	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2119840
41	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2254194
42	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2296380
43	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2300127
44	Kozharinov A. (bubala)	206	0	10	2020-09-30 09:55:07		2542194
45	Samarin A. (not.yet.sql.master)	139	0	112	2020-08-14 15:12:10		2609556
46	Koptel'tsev V. (selber)	20	113	259	2020-06-24 00:22:07		2683887
47	Samarin A. (not.yet.sql.master)	139	0	138	2020-05-09 21:48:04		2748841
48	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2756811
49	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2796326
50	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2820053
51	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3130442
52	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3157724
53	Romanov K.Yu. (kostik)	305	0	12	2019-07-25 08:42:10		3165786
54	Kordyum A. (alko58)	224	0	12	2019-07-12 15:58:52		3184070
55	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3228148
56	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3368123
57	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3466391
58	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3469572
59	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3611763
60	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3672310
61	Voevutskij S.A. (SergLK)	211	0	45	2018-07-01 13:19:14		3725669
62	Zyrin V.E. (Vezyr)	537	0	29	2018-05-29 14:14:19		3773134
63	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3865201
64	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3869110
65	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3869189
66	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		3891818
67	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		3905975
68	F (uff)	65	25	95	2018-01-22 15:57:03		3955912
69	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4007580
70	Kordyum A. (alko58)	224	0	101	2017-11-21 18:18:43		4045050
71	Zajtsev V.S. (Sleeping)	21	112	190	2017-11-20 12:57:31		4046811
72	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4047879
73	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4085594
74	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4112711
75	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4145774
76	Grinkevich D.L. (Dmitrij Grinkevich)	22	109	115	2017-07-21 14:09:37		4222419
77	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4268964
78	Vorob'ev E.V. (Johnnymnemonic)	158	0	138	2017-06-16 09:15:49		4273113
79	F (uff)	65	25	185	2017-06-01 10:27:49		4294641
80	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4334514
81	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4396405
82	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4631308
83	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4666781
84	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4746005
85	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4876340
86	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		4918439
87	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5087860
88	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5119547
89	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5153546
90	Fomichev A.V. (Fomichev)	196	0	101	2015-10-07 11:21:04		5162908
91	Grinkevich D.L. (Dmitrij Grinkevich)	22	109	188	2015-09-19 12:34:48		5188754
92	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5203058
93	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5204744
94	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		5216353
95	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5219924
96	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5223255
97	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5266941
98	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5268208
99	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5276770
100	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5286500

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