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SQL exercises

August 15, 11:03 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: 15149

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	22	109	179	2025-08-11 14:48:50		5534
2	Sarkis'yan G. (gennadi_s)	22	109	178	2025-08-04 14:40:56	2025-08-07 19:55:02	4634
3	Chernov D.V. (Kursist)	2	262	240	2025-07-26 20:49:03	2025-08-04 23:04:01	13095
4	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		50990
5	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		172711
6	Fomichev A.V. (Fomichev)	196	0	7	2025-02-25 02:16:37		246767
7	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		254865
8	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		285113
9	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		297302
10	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		445155
11	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		446463
12	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		469213
13	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		496653
14	Zajtsev V.S. (Sleeping)	21	112	164	2024-07-09 13:11:22		578752
15	Slavutinskij V.V. (Vasilko)	446	0	5	2024-04-22 17:26:35		690817
16	Slavutinskij V.V. (Vasilko)	446	0	7	2024-04-22 17:26:21		690817
17	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		719973
18	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		746494
19	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		760125
20	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		826168
21	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		829482
22	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		831871
23	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		864536
24	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		909712
25	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		916799
26	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		941375
27	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1186407
28	Zajtsev V.S. (Sleeping)	21	112	150	2023-04-18 11:40:16		1223963
29	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1257953
30	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1361942
31	Koptel'tsev V. (selber)	20	113	237	2022-11-06 21:16:51		1458106
32	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1497315
33	Lukov D.R. (Gendalf)	240	0	90	2022-07-21 11:18:50		1614224
34	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1760806
35	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1874855
36	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2012562
37	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2140914
38	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2275268
39	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2317455
40	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2321202
41	Kozharinov A. (bubala)	206	0	10	2020-09-30 09:55:07		2563268
42	Samarin A. (not.yet.sql.master)	140	0	112	2020-08-14 15:12:10		2630631
43	Koptel'tsev V. (selber)	20	113	259	2020-06-24 00:22:07		2704961
44	Samarin A. (not.yet.sql.master)	140	0	138	2020-05-09 21:48:04		2769915
45	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2777886
46	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2817400
47	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2841128
48	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3151517
49	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3178799
50	Romanov K.Yu. (kostik)	306	0	12	2019-07-25 08:42:10		3186861
51	Kordyum A. (alko58)	224	0	12	2019-07-12 15:58:52		3205144
52	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3249223
53	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3389198
54	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3487466
55	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3490647
56	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3632838
57	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3693385
58	Voevutskij S.A. (SergLK)	211	0	45	2018-07-01 13:19:14		3746744
59	Zyrin V.E. (Vezyr)	537	0	29	2018-05-29 14:14:19		3794209
60	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3886276
61	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3890185
62	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3890263
63	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		3912893
64	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		3927050
65	F (uff)	65	25	95	2018-01-22 15:57:03		3976986
66	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4028655
67	Kordyum A. (alko58)	224	0	101	2017-11-21 18:18:43		4066125
68	Zajtsev V.S. (Sleeping)	21	112	190	2017-11-20 12:57:31		4067886
69	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4068954
70	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4106669
71	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4133786
72	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4166849
73	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4243494
74	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4290038
75	Vorob'ev E.V. (Johnnymnemonic)	158	0	138	2017-06-16 09:15:49		4294187
76	F (uff)	65	25	185	2017-06-01 10:27:49		4315715
77	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4355588
78	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4417479
79	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4652383
80	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4687856
81	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4767079
82	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4897415
83	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		4939514
84	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5108934
85	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5140622
86	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5174621
87	Fomichev A.V. (Fomichev)	196	0	101	2015-10-07 11:21:04		5183982
88	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5209828
89	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5224132
90	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5225818
91	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		5237428
92	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5240999
93	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5244330
94	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5288015
95	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5289282
96	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5297844
97	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5307574
98	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5316201
99	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5546640
100	Skorohod I. (Dracul4ik)	78	15	252	2015-01-27 11:56:41		5548267

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