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SQL exercises

June 19, 20:16 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: 15109

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		4418
2	Makarov I.A. (_Bkmz_)	49	40	143	2026-06-12 10:09:54	2026-06-13 03:07:28	1018
3	Suprun D. (TimonSP)	77	15	24	2026-06-06 13:08:47	2026-06-06 13:25:05	16
4	Makarov I.A. (_Bkmz_)	49	40	168	2026-06-06 10:14:03	2026-06-06 11:42:23	88
5	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		38847
6	Koptel'tsev V. (selber)	19	129	241	2026-05-23 20:23:43		38873
7	Williams B. (BW)	35	66	24	2026-05-15 13:25:32		50811
8	Komarov A.N. (Shveda Saulya)	37	65	160	2026-05-09 13:24:21		59452
9	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		72512
10	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		82740
11	Vyazovetskov A.S. (alex_v)	7	241	264	2026-04-22 19:15:17		83581
12	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		114293
13	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		207521
14	Lukov D.R. (Gendalf)	245	0	32	2025-12-05 01:36:21		283360
15	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		495064
16	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		616784
17	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		698939
18	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		729187
19	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		741375
20	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		889228
21	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		890536
22	Frolov K.A. (Murderface_)	134	0	138	2024-09-23 14:49:59		913287
23	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1022825
24	Slavutinskij V.V. (Vasilko)	455	0	5	2024-04-22 17:26:35		1134890
25	Slavutinskij V.V. (Vasilko)	455	0	7	2024-04-22 17:26:21		1134890
26	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1164046
27	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1190567
28	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1204199
29	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1270241
30	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1273555
31	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1275945
32	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1308610
33	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1360872
34	Rudikov E. (cubie)	135	0	138	2023-10-31 17:27:54		1385449
35	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1702026
36	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1806015
37	Koptel'tsev V. (selber)	19	129	237	2022-11-06 21:16:51		1902180
38	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		1941388
39	Lukov D.R. (Gendalf)	245	0	90	2022-07-21 11:18:50		2058298
40	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2204879
41	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2456636
42	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2584988
43	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2719342
44	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2761528
45	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2765276
46	Kozharinov A. (bubala)	212	0	10	2020-09-30 09:55:07		3007342
47	Samarin A. (not.yet.sql.master)	146	0	112	2020-08-14 15:12:10		3074705
48	Koptel'tsev V. (selber)	19	129	259	2020-06-24 00:22:07		3149035
49	Samarin A. (not.yet.sql.master)	146	0	138	2020-05-09 21:48:04		3213989
50	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3221959
51	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3261474
52	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3285201
53	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3595590
54	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3622873
55	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3630935
56	Kordyum A. (alko58)	230	0	12	2019-07-12 15:58:52		3649218
57	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3693296
58	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3833271
59	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		3931539
60	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		3934720
61	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4076911
62	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4137458
63	Voevutskij S.A. (SergLK)	218	0	45	2018-07-01 13:19:14		4190817
64	Zyrin V.E. (Vezyr)	549	0	29	2018-05-29 14:14:19		4238282
65	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4330349
66	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4334258
67	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4334337
68	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4356966
69	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4371123
70	F (uff)	65	25	95	2018-01-22 15:57:03		4421060
71	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4472728
72	Kordyum A. (alko58)	230	0	101	2017-11-21 18:18:43		4510198
73	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4511959
74	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4513027
75	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4550742
76	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4577859
77	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4610922
78	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4687567
79	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4734112
80	Vorob'ev E.V. (Johnnymnemonic)	163	0	138	2017-06-16 09:15:49		4738261
81	F (uff)	65	25	185	2017-06-01 10:27:49		4759789
82	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4799662
83	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4861553
84	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5096456
85	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5131929
86	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5211153
87	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5341488
88	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5383587
89	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5553008
90	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5584695
91	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5618694
92	Fomichev A.V. (Fomichev)	199	0	101	2015-10-07 11:21:04		5628056
93	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5653902
94	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5668206
95	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5669892
96	Varenikov D.M. (Dmitriy Varenikov)	20	129	263	2015-08-31 08:35:37		5681501
97	Chebykin D. (GriGrim)	39	62	263	2015-08-28 21:04:30		5685072
98	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5688403
99	Maslyaev V.S. (Velmont)	91	11	140	2015-07-27 05:27:50		5732089
100	Khromulyak O.M. (ChOleg)	121	5	150	2015-07-26 08:20:51		5733356

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