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SQL exercises

December 07, 09:57 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: 15281

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Kostomarov A.V. (al29)	5	247	5	2025-12-05 14:04:47		2633
2	Lukov D.R. (Gendalf)	241	0	32	2025-12-05 01:36:21		3381
3	Sarkis'yan G. (gennadi_s)	18	131	188	2025-11-30 13:49:15		9848
4	Sarkis'yan G. (gennadi_s)	18	131	187	2025-11-21 15:27:25	2025-11-25 14:09:56	5683
5	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		215084
6	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		336805
7	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		410861
8	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		418959
9	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		449208
10	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		461396
11	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		609249
12	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		610557
13	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		633307
14	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		660748
15	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		742846
16	Slavutinskij V.V. (Vasilko)	447	0	5	2024-04-22 17:26:35		854911
17	Slavutinskij V.V. (Vasilko)	447	0	7	2024-04-22 17:26:21		854911
18	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		884067
19	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		910588
20	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		924220
21	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		990262
22	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		993576
23	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		995965
24	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1028630
25	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		1073806
26	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1080893
27	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1105470
28	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1350501
29	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1388057
30	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1422047
31	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1526036
32	Koptel'tsev V. (selber)	21	116	237	2022-11-06 21:16:51		1622201
33	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1661409
34	Lukov D.R. (Gendalf)	241	0	90	2022-07-21 11:18:50		1778319
35	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1924900
36	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2176656
37	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2305008
38	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2439362
39	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2481549
40	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2485296
41	Kozharinov A. (bubala)	207	0	10	2020-09-30 09:55:07		2727362
42	Samarin A. (not.yet.sql.master)	143	0	112	2020-08-14 15:12:10		2794725
43	Koptel'tsev V. (selber)	21	116	259	2020-06-24 00:22:07		2869055
44	Samarin A. (not.yet.sql.master)	143	0	138	2020-05-09 21:48:04		2934009
45	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2941980
46	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2981495
47	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		3005222
48	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3315611
49	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3342893
50	Romanov K.Yu. (kostik)	307	0	12	2019-07-25 08:42:10		3350955
51	Kordyum A. (alko58)	225	0	12	2019-07-12 15:58:52		3369239
52	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3413317
53	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3553292
54	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3651560
55	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3654741
56	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3796932
57	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3857479
58	Voevutskij S.A. (SergLK)	214	0	45	2018-07-01 13:19:14		3910838
59	Zyrin V.E. (Vezyr)	540	0	29	2018-05-29 14:14:19		3958303
60	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		4050370
61	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		4054279
62	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4054358
63	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4076987
64	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		4091144
65	F (uff)	65	25	95	2018-01-22 15:57:03		4141080
66	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4192749
67	Kordyum A. (alko58)	225	0	101	2017-11-21 18:18:43		4230219
68	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4231980
69	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4233048
70	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4270763
71	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4297880
72	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4330943
73	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4407588
74	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4454133
75	Vorob'ev E.V. (Johnnymnemonic)	161	0	138	2017-06-16 09:15:49		4458282
76	F (uff)	65	25	185	2017-06-01 10:27:49		4479810
77	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4519683
78	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4581574
79	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4816477
80	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4851950
81	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4931173
82	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5061509
83	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5103608
84	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5273029
85	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5304716
86	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5338715
87	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5348076
88	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5373923
89	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5388227
90	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5389913
91	Varenikov D.M. (Dmitriy Varenikov)	19	128	263	2015-08-31 08:35:37		5401522
92	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5405093
93	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5408424
94	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5452110
95	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5453377
96	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5461938
97	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5471669
98	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5480295
99	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5710734
100	Skorohod I. (Dracul4ik)	78	15	252	2015-01-27 11:56:41		5712361

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