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SQL exercises

June 21, 18:38 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: 15113

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Zajtsev V.S. (Sleeping)	22	118	241	2026-06-16 18:38:55		7200
2	Makarov I.A. (_Bkmz_)	49	40	143	2026-06-12 10:09:54	2026-06-13 03:07:28	1018
3	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		41629
4	Koptel'tsev V. (selber)	19	129	241	2026-05-23 20:23:43		41655
5	Williams B. (BW)	35	66	24	2026-05-15 13:25:32		53593
6	Komarov A.N. (Shveda Saulya)	37	65	160	2026-05-09 13:24:21		62234
7	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		75293
8	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		85521
9	Vyazovetskov A.S. (alex_v)	7	241	264	2026-04-22 19:15:17		86363
10	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		117075
11	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		210302
12	Lukov D.R. (Gendalf)	245	0	32	2025-12-05 01:36:21		286142
13	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		497846
14	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		619566
15	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		701720
16	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		731969
17	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		744157
18	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		892010
19	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		893318
20	Frolov K.A. (Murderface_)	134	0	138	2024-09-23 14:49:59		916069
21	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1025607
22	Slavutinskij V.V. (Vasilko)	455	0	5	2024-04-22 17:26:35		1137672
23	Slavutinskij V.V. (Vasilko)	455	0	7	2024-04-22 17:26:21		1137672
24	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1166828
25	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1193349
26	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1206981
27	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1273023
28	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1276337
29	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1278726
30	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1311391
31	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1363654
32	Rudikov E. (cubie)	135	0	138	2023-10-31 17:27:54		1388231
33	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1704808
34	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1808797
35	Koptel'tsev V. (selber)	19	129	237	2022-11-06 21:16:51		1904962
36	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		1944170
37	Lukov D.R. (Gendalf)	245	0	90	2022-07-21 11:18:50		2061080
38	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2207661
39	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2459418
40	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2587769
41	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2722123
42	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2764310
43	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2768057
44	Kozharinov A. (bubala)	212	0	10	2020-09-30 09:55:07		3010123
45	Samarin A. (not.yet.sql.master)	146	0	112	2020-08-14 15:12:10		3077486
46	Koptel'tsev V. (selber)	19	129	259	2020-06-24 00:22:07		3151816
47	Samarin A. (not.yet.sql.master)	146	0	138	2020-05-09 21:48:04		3216770
48	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3224741
49	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3264256
50	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3287983
51	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3598372
52	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3625654
53	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3633716
54	Kordyum A. (alko58)	230	0	12	2019-07-12 15:58:52		3652000
55	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3696078
56	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3836053
57	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		3934321
58	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		3937502
59	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4079693
60	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4140240
61	Voevutskij S.A. (SergLK)	218	0	45	2018-07-01 13:19:14		4193599
62	Zyrin V.E. (Vezyr)	549	0	29	2018-05-29 14:14:19		4241064
63	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4333131
64	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4337040
65	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4337119
66	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4359748
67	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4373905
68	F (uff)	65	25	95	2018-01-22 15:57:03		4423841
69	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4475510
70	Kordyum A. (alko58)	230	0	101	2017-11-21 18:18:43		4512980
71	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4514741
72	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4515809
73	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4553524
74	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4580641
75	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4613704
76	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4690349
77	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4736894
78	Vorob'ev E.V. (Johnnymnemonic)	163	0	138	2017-06-16 09:15:49		4741043
79	F (uff)	65	25	185	2017-06-01 10:27:49		4762571
80	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4802444
81	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4864335
82	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5099238
83	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5134711
84	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5213934
85	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5344270
86	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5386369
87	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5555790
88	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5587477
89	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5621476
90	Fomichev A.V. (Fomichev)	199	0	101	2015-10-07 11:21:04		5630837
91	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5656684
92	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5670988
93	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5672674
94	Varenikov D.M. (Dmitriy Varenikov)	20	129	263	2015-08-31 08:35:37		5684283
95	Chebykin D. (GriGrim)	39	62	263	2015-08-28 21:04:30		5687854
96	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5691185
97	Maslyaev V.S. (Velmont)	91	11	140	2015-07-27 05:27:50		5734871
98	Khromulyak O.M. (ChOleg)	121	5	150	2015-07-26 08:20:51		5736138
99	Chebykin D. (GriGrim)	39	62	216	2015-07-20 09:39:02		5744699
100	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5754430

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