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SQL exercises

October 19, 06:26 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: 13895

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	14	188	192	2026-10-17 13:29:17		2457
2	Krasovskij E.A. (pegoopik)	1	268	192	2026-10-16 18:51:16	2026-10-16 18:51:23	0
3	Safronov P.A. (Paulus73)	117	6	140	2026-10-09 09:42:14	2026-10-15 12:25:59	8804
4	Vinogradova S.M. (Tigra1)	125	4	141	2026-10-10 17:01:15		12325
5	Sarkis'yan G. (gennadi_s)	14	188	208	2026-10-08 15:07:00	2026-10-10 12:57:58	2751
6	Safronov P.A. (Paulus73)	117	6	142	2026-10-08 11:19:23	2026-10-08 22:44:52	685
7	Safronov P.A. (Paulus73)	117	6	139	2026-10-08 10:01:07	2026-10-08 11:01:43	61
8	Safronov P.A. (Paulus73)	117	6	138	2026-10-06 09:41:15	2026-10-07 02:54:18	1033
9	Filippkin D.V. (_dimon_)	2	260	240	2026-10-05 14:13:38	2026-10-06 15:58:40	1545
10	Kostomarov A.V. (al29)	5	245	53	2026-09-30 08:53:59		27212
11	Koptel'tsev V. (selber)	18	133	183	2026-09-07 08:11:06		60375
12	Komarov A.N. (Shveda Saulya)	35	68	165	2026-08-28 13:41:52		74444
13	Koptel'tsev V. (selber)	18	133	188	2026-08-21 06:33:00		84953
14	Williams B. (BW)	36	65	252	2026-07-31 13:33:49		114772
15	Williams B. (BW)	36	65	264	2026-07-29 13:21:27		117665
16	Sigankov V.I. (vasilyvanc)	33	72	216	2026-07-23 12:13:08		126373
17	Sigankov V.I. (vasilyvanc)	33	72	241	2026-07-21 14:05:13		129141
18	Zajtsev V.S. (Sleeping)	22	116	241	2026-06-16 18:38:55		179267
19	Chernov D.V. (Kursist)	3	260	241	2026-05-23 20:49:50		213696
20	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		247361
21	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		257589
22	Vyazovetskov A.S. (alex_v)	6	243	264	2026-04-22 19:15:17		258431
23	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		289143
24	Petrov Y. (YuriPetrov)	32	76	210	2026-01-26 17:36:12		382370
25	Lukov D.R. (Gendalf)	248	0	32	2025-12-05 01:36:21		458210
26	Chebykin D. (GriGrim)	39	60	210	2025-07-11 01:12:59		669913
27	Chuvstvin M. (chuvstvinmaxim)	92	9	141	2025-01-29 11:09:56		904036
28	Chuvstvin M. (chuvstvinmaxim)	92	9	258	2025-01-21 00:01:28		916225
29	Lyubomudrov R.G. (born2tilt)	73	20	162	2024-10-10 07:48:40		1064077
30	Lyubomudrov R.G. (born2tilt)	73	20	202	2024-10-09 10:00:37		1065385
31	Frolov K.A. (Murderface_)	136	0	138	2024-09-23 14:49:59		1088136
32	Zajtsev V.S. (Sleeping)	22	116	164	2024-07-09 13:11:22		1197675
33	Slavutinskij V.V. (Vasilko)	457	0	5	2024-04-22 17:26:35		1309739
34	Slavutinskij V.V. (Vasilko)	457	0	7	2024-04-22 17:26:21		1309740
35	Williams B. (BW)	36	65	141	2024-04-02 11:30:28		1338896
36	Kukushkin S.A. (smog)	16	151	194	2024-03-15 01:29:39		1365416
37	Latyntsev N.G. (aks_nsk)	54	35	253	2024-03-05 14:17:51		1379048
38	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1445091
39	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1448404
40	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1450794
41	Nikolaenko A.V. (Shadow77)	82	14	135	2023-12-24 02:07:10		1483459
42	Boiko D. (Angellore)	9	231	262	2023-11-17 19:04:36		1535721
43	Rudikov E. (cubie)	137	0	138	2023-10-31 17:27:54		1560298
44	Shkarednyj I.N. (Gosha)	37	64	198	2023-03-25 21:10:27		1876876
45	Latyntsev N.G. (aks_nsk)	54	35	255	2023-01-12 16:01:39		1980864
46	Koptel'tsev V. (selber)	18	133	237	2022-11-06 21:16:51		2077029
47	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		2116238
48	Lukov D.R. (Gendalf)	248	0	90	2022-07-21 11:18:50		2233147
49	Pavlov A.V. (Anton)	59	29	141	2022-04-10 16:17:39		2379728
50	Sigankov V.I. (vasilyvanc)	33	72	161	2021-10-17 20:21:01		2631485
51	Fedevych V.I. (labuch_fedev)	38	63	221	2021-07-20 17:09:05		2759837
52	Pusev D.V. (Pusev_Denis)	19	132	234	2021-04-18 09:55:08		2894191
53	Kukushkin S.A. (smog)	16	151	12	2021-03-20 02:48:36		2936377
54	Pusev D.V. (Pusev_Denis)	19	132	159	2021-03-17 12:21:10		2940125
55	Kozharinov A. (bubala)	214	0	10	2020-09-30 09:55:07		3182191
56	Samarin A. (not.yet.sql.master)	148	0	112	2020-08-14 15:12:10		3249554
57	Koptel'tsev V. (selber)	18	133	259	2020-06-24 00:22:07		3323884
58	Samarin A. (not.yet.sql.master)	148	0	138	2020-05-09 21:48:04		3388838
59	Karasyova N.V. (vlksm)	10	223	230	2020-05-04 08:57:25		3396809
60	Fedevych V.I. (labuch_fedev)	38	63	226	2020-04-06 22:22:48		3436323
61	Pusev D.V. (Pusev_Denis)	19	132	184	2020-03-21 10:55:32		3460050
62	Fokin A. (Vizitor )	44	50	263	2019-08-18 21:46:14		3770440
63	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3797722
64	Romanov K.Yu. (kostik)	313	0	12	2019-07-25 08:42:10		3805784
65	Kordyum A. (alko58)	233	0	12	2019-07-12 15:58:52		3824067
66	Pavlov A.V. (Anton)	59	29	168	2019-06-12 01:20:21		3868146
67	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		4008121
68	Kurochkin P.A. (qwrqwr)	12	209	227	2018-12-28 14:37:25		4106389
69	Grishunin M.F. (MikhailFG)	90	10	144	2018-12-26 09:36:27		4109570
70	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4251761
71	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4312308
72	Voevutskij S.A. (SergLK)	220	0	45	2018-07-01 13:19:14		4365667
73	Zyrin V.E. (Vezyr)	553	0	29	2018-05-29 14:14:19		4413132
74	Chebykin D. (GriGrim)	39	60	228	2018-03-26 15:47:45		4505198
75	Shkarednyj I.N. (Gosha)	37	64	151	2018-03-23 22:38:32		4509107
76	Boiko D. (Angellore)	9	231	229	2018-03-23 21:19:51		4509186
77	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4531816
78	Shkarednyj I.N. (Gosha)	37	64	147	2018-02-26 08:13:30		4545973
79	F (uff)	66	23	95	2018-01-22 15:57:03		4595909
80	Aliev R. (y4nzi)	27	93	259	2017-12-17 18:48:39		4647577
81	Kordyum A. (alko58)	233	0	101	2017-11-21 18:18:43		4685047
82	Zajtsev V.S. (Sleeping)	22	116	190	2017-11-20 12:57:31		4686809
83	Aliev R. (y4nzi)	27	93	257	2017-11-19 19:09:17		4687877
84	Aliev R. (y4nzi)	27	93	255	2017-10-24 14:34:21		4725592
85	Kukushkin S.A. (smog)	16	151	171	2017-10-05 18:37:27		4752709
86	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4785771
87	Grinkevich D.L. (Dmitrij Grinkevich)	23	107	115	2017-07-21 14:09:37		4862416
88	Bezhaev A.Yu. (Baser)	8	234	220	2017-06-19 06:24:54		4908961
89	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4913110
90	F (uff)	66	23	185	2017-06-01 10:27:49		4934638
91	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4974511
92	Movlyanov A.P. (Oct)	13	191	218	2017-03-22 18:23:50		5036402
93	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5271306
94	Sysoev A.V. (Sysa)	53	37	165	2016-09-16 00:07:24		5306779
95	Sysoev A.V. (Sysa)	53	37	168	2016-07-22 23:44:07		5386002
96	Karasyova N.V. (vlksm)	10	223	263	2016-04-23 11:28:43		5516337
97	Titovskij P.S. (kli3ma)	46	45	164	2016-03-25 05:49:30		5558437
98	Sivoglazov M.A. (Gaizenberg)	70	22	127	2015-11-28 14:08:52		5727857
99	Maslyaev V.S. (Velmont)	94	9	170	2015-11-06 14:01:20		5759545
100	Sivoglazov M.A. (Gaizenberg)	70	22	261	2015-10-13 23:22:26		5793544

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