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SQL exercises

June 21, 02:48 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: 15080

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	25	97	172	2025-06-11 18:25:26	2025-06-20 14:07:31	12702
2	Makarov I.A. (_Bkmz_)	74	18	235	2025-06-15 10:19:27	2025-06-15 10:56:09	37
3	Dubinskij A.V. (_velial)	10	223	88	2025-06-14 13:07:56	2025-06-14 13:12:01	4
4	Dubinskij A.V. (_velial)	10	223	32	2025-06-14 11:33:39	2025-06-14 12:59:20	86
5	Makarov I.A. (_Bkmz_)	74	18	203	2025-06-14 11:13:55	2025-06-14 12:44:35	91
6	Makarov I.A. (_Bkmz_)	74	18	236	2025-06-14 10:28:33	2025-06-14 11:03:01	34
7	Dubinskij A.V. (_velial)	10	223	7	2025-06-13 21:25:31	2025-06-13 21:36:57	11
8	Dubinskij A.V. (_velial)	10	223	5	2025-06-13 20:49:56	2025-06-13 21:24:28	35
9	Makarov I.A. (_Bkmz_)	74	18	201	2025-06-13 10:21:16	2025-06-13 12:43:54	143
10	Makarov I.A. (_Bkmz_)	74	18	197	2025-06-12 10:17:44	2025-06-12 15:13:57	296
11	Sarkis'yan G. (gennadi_s)	25	97	171	2025-05-26 13:59:15	2025-06-08 15:02:17	18783
12	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		93016
13	Fomichev A.V. (Fomichev)	195	0	7	2025-02-25 02:16:37		167072
14	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		175171
15	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		205419
16	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		217608
17	Lyubomudrov R.G. (born2tilt)	70	22	162	2024-10-10 07:48:40		365460
18	Lyubomudrov R.G. (born2tilt)	70	22	202	2024-10-09 10:00:37		366768
19	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		389519
20	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		416959
21	Zajtsev V.S. (Sleeping)	21	112	164	2024-07-09 13:11:22		499058
22	Slavutinskij V.V. (Vasilko)	446	0	5	2024-04-22 17:26:35		611122
23	Slavutinskij V.V. (Vasilko)	446	0	7	2024-04-22 17:26:21		611123
24	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		640279
25	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		666799
26	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		680431
27	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		746473
28	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		749787
29	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		752177
30	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		784842
31	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		830018
32	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		837104
33	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		861681
34	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1106713
35	Zajtsev V.S. (Sleeping)	21	112	150	2023-04-18 11:40:16		1144269
36	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1178259
37	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1282247
38	Koptel'tsev V. (selber)	20	113	237	2022-11-06 21:16:51		1378412
39	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1417621
40	Lukov D.R. (Gendalf)	240	0	90	2022-07-21 11:18:50		1534530
41	Pavlov A.V. (Anton)	59	29	141	2022-04-10 16:17:39		1681111
42	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1795161
43	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		1932868
44	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2061220
45	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2195574
46	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2237760
47	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2241508
48	Kozharinov A. (bubala)	205	0	10	2020-09-30 09:55:07		2483574
49	Samarin A. (not.yet.sql.master)	139	0	112	2020-08-14 15:12:10		2550937
50	Koptel'tsev V. (selber)	20	113	259	2020-06-24 00:22:07		2625267
51	Samarin A. (not.yet.sql.master)	139	0	138	2020-05-09 21:48:04		2690221
52	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2698192
53	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2737706
54	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2761433
55	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3071823
56	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3099105
57	Romanov K.Yu. (kostik)	304	0	12	2019-07-25 08:42:10		3107167
58	Kordyum A. (alko58)	224	0	12	2019-07-12 15:58:52		3125450
59	Pavlov A.V. (Anton)	59	29	168	2019-06-12 01:20:21		3169529
60	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3309504
61	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3407772
62	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3410953
63	Shindin A.V. (AlShin)	24	99	45	2018-09-18 15:45:28		3553144
64	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3613691
65	Voevutskij S.A. (SergLK)	210	0	45	2018-07-01 13:19:14		3667050
66	Zyrin V.E. (Vezyr)	537	0	29	2018-05-29 14:14:19		3714515
67	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3806581
68	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3810490
69	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3810569
70	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		3833199
71	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		3847355
72	F (uff)	64	25	95	2018-01-22 15:57:03		3897292
73	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		3948960
74	Kordyum A. (alko58)	224	0	101	2017-11-21 18:18:43		3986430
75	Zajtsev V.S. (Sleeping)	21	112	190	2017-11-20 12:57:31		3988191
76	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		3989260
77	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4026975
78	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4054092
79	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4087154
80	Grinkevich D.L. (Dmitrij Grinkevich)	22	109	115	2017-07-21 14:09:37		4163799
81	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4210344
82	Vorob'ev E.V. (Johnnymnemonic)	157	0	138	2017-06-16 09:15:49		4214493
83	F (uff)	64	25	185	2017-06-01 10:27:49		4236021
84	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4275894
85	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4337785
86	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4572689
87	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4608162
88	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4687385
89	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4817720
90	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		4859819
91	Sivoglazov M.A. (Gaizenberg)	65	24	127	2015-11-28 14:08:52		5029240
92	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5060928
93	Sivoglazov M.A. (Gaizenberg)	65	24	261	2015-10-13 23:22:26		5094927
94	Fomichev A.V. (Fomichev)	195	0	101	2015-10-07 11:21:04		5104288
95	Grinkevich D.L. (Dmitrij Grinkevich)	22	109	188	2015-09-19 12:34:48		5130134
96	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5144438
97	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5146124
98	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		5157733
99	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5161304
100	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5164636

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