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SQL exercises

November 26, 11:31 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: 15324

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	18	131	187	2025-11-21 15:27:25	2025-11-25 14:09:56	5683
2	Sarkis'yan G. (gennadi_s)	18	131	186	2025-11-12 16:36:56	2025-11-14 15:14:47	2798
3	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		199339
4	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		321059
5	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		395115
6	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		403213
7	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		433462
8	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		445650
9	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		593503
10	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		594811
11	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		617562
12	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		645002
13	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		727100
14	Slavutinskij V.V. (Vasilko)	447	0	5	2024-04-22 17:26:35		839165
15	Slavutinskij V.V. (Vasilko)	447	0	7	2024-04-22 17:26:21		839165
16	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		868321
17	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		894842
18	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		908474
19	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		974516
20	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		977830
21	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		980219
22	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1012884
23	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		1058060
24	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1065147
25	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1089724
26	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1334755
27	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1372311
28	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1406301
29	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1510290
30	Koptel'tsev V. (selber)	21	116	237	2022-11-06 21:16:51		1606455
31	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1645663
32	Lukov D.R. (Gendalf)	241	0	90	2022-07-21 11:18:50		1762573
33	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1909154
34	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2160910
35	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2289262
36	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2423616
37	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2465803
38	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2469550
39	Kozharinov A. (bubala)	207	0	10	2020-09-30 09:55:07		2711616
40	Samarin A. (not.yet.sql.master)	141	0	112	2020-08-14 15:12:10		2778979
41	Koptel'tsev V. (selber)	21	116	259	2020-06-24 00:22:07		2853309
42	Samarin A. (not.yet.sql.master)	141	0	138	2020-05-09 21:48:04		2918263
43	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2926234
44	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2965749
45	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2989476
46	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3299865
47	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3327147
48	Romanov K.Yu. (kostik)	307	0	12	2019-07-25 08:42:10		3335209
49	Kordyum A. (alko58)	225	0	12	2019-07-12 15:58:52		3353493
50	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3397571
51	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3537546
52	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3635814
53	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3638995
54	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3781186
55	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3841733
56	Voevutskij S.A. (SergLK)	213	0	45	2018-07-01 13:19:14		3895092
57	Zyrin V.E. (Vezyr)	539	0	29	2018-05-29 14:14:19		3942557
58	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		4034624
59	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		4038533
60	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4038612
61	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4061241
62	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		4075398
63	F (uff)	65	25	95	2018-01-22 15:57:03		4125334
64	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4177003
65	Kordyum A. (alko58)	225	0	101	2017-11-21 18:18:43		4214473
66	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4216234
67	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4217302
68	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4255017
69	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4282134
70	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4315197
71	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4391842
72	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4438387
73	Vorob'ev E.V. (Johnnymnemonic)	161	0	138	2017-06-16 09:15:49		4442536
74	F (uff)	65	25	185	2017-06-01 10:27:49		4464064
75	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4503937
76	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4565828
77	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4800731
78	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4836204
79	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4915427
80	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5045763
81	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5087862
82	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5257283
83	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5288970
84	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5322969
85	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5332330
86	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5358177
87	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5372481
88	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5374167
89	Varenikov D.M. (Dmitriy Varenikov)	19	128	263	2015-08-31 08:35:37		5385776
90	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5389347
91	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5392678
92	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5436364
93	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5437631
94	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5446192
95	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5455923
96	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5464549
97	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5694988
98	Skorohod I. (Dracul4ik)	78	15	252	2015-01-27 11:56:41		5696615
99	Sysoev A.V. (Sysa)	49	39	143	2014-12-25 01:16:19		5744775
100	Grishin (alvigr)	79	15	185	2014-12-05 11:56:29		5772935

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