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SQL exercises

September 12, 06:52 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: 15158

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Krasovskij E.A. (pegoopik)	1	266	303	2026-09-11 20:13:12	2026-09-11 20:13:42	1
2	Vinogradova S.M. (Tigra1)	148	0	138	2026-09-06 14:09:20	2026-09-11 10:52:12	7003
3	Sarkis'yan G. (gennadi_s)	14	187	207	2026-09-08 14:40:13	2026-09-10 12:22:30	2742
4	Koptel'tsev V. (selber)	19	133	183	2026-09-07 08:11:06		7122
5	Vinogradova S.M. (Tigra1)	148	0	137	2026-08-30 14:15:52	2026-08-31 22:19:52	1924
6	Komarov A.N. (Shveda Saulya)	35	68	165	2026-08-28 13:41:52		21191
7	Koptel'tsev V. (selber)	19	133	188	2026-08-21 06:33:00		31700
8	Williams B. (BW)	36	67	252	2026-07-31 13:33:49		61519
9	Williams B. (BW)	36	67	264	2026-07-29 13:21:27		64411
10	Sigankov V.I. (vasilyvanc)	33	74	216	2026-07-23 12:13:08		73120
11	Sigankov V.I. (vasilyvanc)	33	74	241	2026-07-21 14:05:13		75887
12	Zajtsev V.S. (Sleeping)	22	118	241	2026-06-16 18:38:55		126014
13	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		160443
14	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		194107
15	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		204335
16	Vyazovetskov A.S. (alex_v)	6	245	264	2026-04-22 19:15:17		205177
17	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		235889
18	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		329116
19	Lukov D.R. (Gendalf)	247	0	32	2025-12-05 01:36:21		404956
20	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		616660
21	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		850783
22	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		862971
23	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		1010824
24	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		1012132
25	Frolov K.A. (Murderface_)	135	0	138	2024-09-23 14:49:59		1034883
26	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1144421
27	Slavutinskij V.V. (Vasilko)	455	0	5	2024-04-22 17:26:35		1256486
28	Slavutinskij V.V. (Vasilko)	455	0	7	2024-04-22 17:26:21		1256486
29	Williams B. (BW)	36	67	141	2024-04-02 11:30:28		1285642
30	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1312163
31	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1325795
32	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1391837
33	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1395151
34	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1397541
35	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1430206
36	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1482468
37	Rudikov E. (cubie)	136	0	138	2023-10-31 17:27:54		1507045
38	Shkarednyj I.N. (Gosha)	37	66	198	2023-03-25 21:10:27		1823622
39	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1927611
40	Koptel'tsev V. (selber)	19	133	237	2022-11-06 21:16:51		2023776
41	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		2062984
42	Lukov D.R. (Gendalf)	247	0	90	2022-07-21 11:18:50		2179894
43	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2326475
44	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2578232
45	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2706584
46	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2840938
47	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2883124
48	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2886872
49	Kozharinov A. (bubala)	213	0	10	2020-09-30 09:55:07		3128938
50	Samarin A. (not.yet.sql.master)	147	0	112	2020-08-14 15:12:10		3196301
51	Koptel'tsev V. (selber)	19	133	259	2020-06-24 00:22:07		3270631
52	Samarin A. (not.yet.sql.master)	147	0	138	2020-05-09 21:48:04		3335585
53	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3343555
54	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3383070
55	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3406797
56	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3717186
57	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3744468
58	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3752531
59	Kordyum A. (alko58)	231	0	12	2019-07-12 15:58:52		3770814
60	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3814892
61	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3954867
62	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		4053135
63	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		4056316
64	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4198507
65	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4259054
66	Voevutskij S.A. (SergLK)	219	0	45	2018-07-01 13:19:14		4312413
67	Zyrin V.E. (Vezyr)	553	0	29	2018-05-29 14:14:19		4359878
68	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4451945
69	Shkarednyj I.N. (Gosha)	37	66	151	2018-03-23 22:38:32		4455854
70	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4455933
71	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4478562
72	Shkarednyj I.N. (Gosha)	37	66	147	2018-02-26 08:13:30		4492719
73	F (uff)	65	25	95	2018-01-22 15:57:03		4542656
74	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4594324
75	Kordyum A. (alko58)	231	0	101	2017-11-21 18:18:43		4631794
76	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4633555
77	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4634623
78	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4672338
79	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4699455
80	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4732518
81	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4809163
82	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4855708
83	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4859857
84	F (uff)	65	25	185	2017-06-01 10:27:49		4881385
85	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4921258
86	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4983149
87	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5218052
88	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5253525
89	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5332749
90	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5463084
91	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5505183
92	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5674604
93	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5706291
94	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5740290
95	Fomichev A.V. (Fomichev)	200	0	101	2015-10-07 11:21:04		5749652
96	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5775498
97	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5789802
98	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5791488
99	Varenikov D.M. (Dmitriy Varenikov)	20	130	263	2015-08-31 08:35:37		5803097
100	Chebykin D. (GriGrim)	39	62	263	2015-08-28 21:04:30		5806668

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