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SQL exercises

October 12, 05:52 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		134200
3	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		255920
4	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		329976
5	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		338074
6	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		368323
7	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		380511
8	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		528364
9	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		529672
10	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		552423
11	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		579863
12	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		661961
13	Slavutinskij V.V. (Vasilko)	447	0	5	2024-04-22 17:26:35		774026
14	Slavutinskij V.V. (Vasilko)	447	0	7	2024-04-22 17:26:21		774026
15	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		803182
16	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		829703
17	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		843335
18	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		909377
19	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		912691
20	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		915081
21	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		947745
22	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		992921
23	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1000008
24	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1024585
25	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1269616
26	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1307172
27	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1341162
28	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1445151
29	Koptel'tsev V. (selber)	21	116	237	2022-11-06 21:16:51		1541316
30	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1580524
31	Lukov D.R. (Gendalf)	240	0	90	2022-07-21 11:18:50		1697434
32	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1844015
33	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1958065
34	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2095772
35	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2224123
36	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2358477
37	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2400664
38	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2404411
39	Kozharinov A. (bubala)	207	0	10	2020-09-30 09:55:07		2646477
40	Samarin A. (not.yet.sql.master)	141	0	112	2020-08-14 15:12:10		2713840
41	Koptel'tsev V. (selber)	21	116	259	2020-06-24 00:22:07		2788170
42	Samarin A. (not.yet.sql.master)	141	0	138	2020-05-09 21:48:04		2853124
43	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2861095
44	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2900610
45	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2924337
46	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3234726
47	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3262008
48	Romanov K.Yu. (kostik)	306	0	12	2019-07-25 08:42:10		3270070
49	Kordyum A. (alko58)	224	0	12	2019-07-12 15:58:52		3288354
50	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3332432
51	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3472407
52	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3570675
53	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3573856
54	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3716047
55	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3776594
56	Voevutskij S.A. (SergLK)	212	0	45	2018-07-01 13:19:14		3829953
57	Zyrin V.E. (Vezyr)	538	0	29	2018-05-29 14:14:19		3877418
58	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3969485
59	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3973394
60	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3973473
61	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		3996102
62	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		4010259
63	F (uff)	65	25	95	2018-01-22 15:57:03		4060196
64	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4111864
65	Kordyum A. (alko58)	224	0	101	2017-11-21 18:18:43		4149334
66	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4151095
67	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4152163
68	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4189878
69	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4216995
70	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4250058
71	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4326703
72	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4373248
73	Vorob'ev E.V. (Johnnymnemonic)	159	0	138	2017-06-16 09:15:49		4377397
74	F (uff)	65	25	185	2017-06-01 10:27:49		4398925
75	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4438798
76	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4500689
77	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4735592
78	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4771065
79	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4850288
80	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4980624
81	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5022723
82	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5192144
83	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5223831
84	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5257830
85	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5267191
86	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5293038
87	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5307342
88	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5309028
89	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		5320637
90	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5324208
91	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5327539
92	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5371225
93	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5372492
94	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5381054
95	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5390784
96	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5399411
97	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5629849
98	Skorohod I. (Dracul4ik)	78	15	252	2015-01-27 11:56:41		5631476
99	Sysoev A.V. (Sysa)	49	39	143	2014-12-25 01:16:19		5679636
100	Grishin (alvigr)	79	15	185	2014-12-05 11:56:29		5707796

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