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SQL exercises

September 20, 14:58 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: 15184

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Koptel'tsev V. (selber)	19	133	53	2026-09-20 05:35:11		564
2	Sarkis'yan G. (gennadi_s)	14	187	53	2026-09-18 17:50:12	2026-09-19 18:45:38	1495
3	Krasovskij E.A. (pegoopik)	1	266	53	2026-09-18 15:39:39	2026-09-18 15:39:44	0
4	Krasovskij E.A. (pegoopik)	1	266	303	2026-09-11 20:13:12	2026-09-11 20:13:42	1
5	Vinogradova S.M. (Tigra1)	148	0	138	2026-09-06 14:09:20	2026-09-11 10:52:12	7003
6	Sarkis'yan G. (gennadi_s)	14	187	207	2026-09-08 14:40:13	2026-09-10 12:22:30	2742
7	Koptel'tsev V. (selber)	19	133	183	2026-09-07 08:11:06		19128
8	Komarov A.N. (Shveda Saulya)	35	68	165	2026-08-28 13:41:52		33197
9	Koptel'tsev V. (selber)	19	133	188	2026-08-21 06:33:00		43706
10	Williams B. (BW)	36	67	252	2026-07-31 13:33:49		73525
11	Williams B. (BW)	36	67	264	2026-07-29 13:21:27		76417
12	Sigankov V.I. (vasilyvanc)	33	74	216	2026-07-23 12:13:08		85126
13	Sigankov V.I. (vasilyvanc)	33	74	241	2026-07-21 14:05:13		87894
14	Zajtsev V.S. (Sleeping)	22	118	241	2026-06-16 18:38:55		138020
15	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		172449
16	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		206114
17	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		216342
18	Vyazovetskov A.S. (alex_v)	6	245	264	2026-04-22 19:15:17		217183
19	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		247895
20	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		341123
21	Lukov D.R. (Gendalf)	247	0	32	2025-12-05 01:36:21		416962
22	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		628666
23	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		862789
24	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		874977
25	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		1022830
26	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		1024138
27	Frolov K.A. (Murderface_)	135	0	138	2024-09-23 14:49:59		1046889
28	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1156427
29	Slavutinskij V.V. (Vasilko)	456	0	5	2024-04-22 17:26:35		1268492
30	Slavutinskij V.V. (Vasilko)	456	0	7	2024-04-22 17:26:21		1268492
31	Williams B. (BW)	36	67	141	2024-04-02 11:30:28		1297648
32	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1324169
33	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1337801
34	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1403843
35	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1407157
36	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1409547
37	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1442212
38	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1494474
39	Rudikov E. (cubie)	136	0	138	2023-10-31 17:27:54		1519051
40	Shkarednyj I.N. (Gosha)	37	66	198	2023-03-25 21:10:27		1835628
41	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1939617
42	Koptel'tsev V. (selber)	19	133	237	2022-11-06 21:16:51		2035782
43	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		2074990
44	Lukov D.R. (Gendalf)	247	0	90	2022-07-21 11:18:50		2191900
45	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2338481
46	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2590238
47	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2718590
48	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2852944
49	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2895130
50	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2898878
51	Kozharinov A. (bubala)	213	0	10	2020-09-30 09:55:07		3140944
52	Samarin A. (not.yet.sql.master)	147	0	112	2020-08-14 15:12:10		3208307
53	Koptel'tsev V. (selber)	19	133	259	2020-06-24 00:22:07		3282637
54	Samarin A. (not.yet.sql.master)	147	0	138	2020-05-09 21:48:04		3347591
55	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3355561
56	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3395076
57	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3418803
58	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3729193
59	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3756475
60	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3764537
61	Kordyum A. (alko58)	231	0	12	2019-07-12 15:58:52		3782820
62	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3826898
63	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3966873
64	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		4065141
65	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		4068322
66	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4210513
67	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4271060
68	Voevutskij S.A. (SergLK)	219	0	45	2018-07-01 13:19:14		4324420
69	Zyrin V.E. (Vezyr)	553	0	29	2018-05-29 14:14:19		4371884
70	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4463951
71	Shkarednyj I.N. (Gosha)	37	66	151	2018-03-23 22:38:32		4467860
72	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4467939
73	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4490568
74	Shkarednyj I.N. (Gosha)	37	66	147	2018-02-26 08:13:30		4504725
75	F (uff)	65	25	95	2018-01-22 15:57:03		4554662
76	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4606330
77	Kordyum A. (alko58)	231	0	101	2017-11-21 18:18:43		4643800
78	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4645561
79	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4646629
80	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4684344
81	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4711461
82	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4744524
83	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4821169
84	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4867714
85	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4871863
86	F (uff)	65	25	185	2017-06-01 10:27:49		4893391
87	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4933264
88	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4995155
89	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5230059
90	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5265531
91	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5344755
92	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5475090
93	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5517189
94	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5686610
95	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5718297
96	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5752296
97	Fomichev A.V. (Fomichev)	200	0	101	2015-10-07 11:21:04		5761658
98	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5787504
99	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5801808
100	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5803494

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