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SQL exercises

May 08, 21:21 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: 15103

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Vyazovetskov A.S. (alex_v)	11	216	217	2026-05-08 10:20:20	2026-05-08 13:08:42	168
2	Vyazovetskov A.S. (alex_v)	11	216	232	2026-05-07 10:40:43	2026-05-07 16:36:28	356
3	Sarkis'yan G. (gennadi_s)	15	170	201	2026-05-06 17:02:11	2026-05-06 21:59:40	297
4	Vyazovetskov A.S. (alex_v)	11	216	160	2026-05-06 10:59:16	2026-05-06 17:58:52	420
5	Vyazovetskov A.S. (alex_v)	11	216	233	2026-05-05 16:32:39	2026-05-05 21:01:23	269
6	Koptel'tsev V. (selber)	19	129	147	2026-04-27 19:09:38	2026-05-05 18:01:02	11451
7	Varenikov D.M. (Dmitriy Varenikov)	20	128	24	2026-05-03 22:31:13	2026-05-03 22:51:54	21
8	Karasyova N.V. (vlksm)	9	225	24	2026-05-01 17:08:12	2026-05-01 17:42:21	34
9	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		12096
10	Sarkis'yan G. (gennadi_s)	15	170	200	2026-04-27 16:55:45	2026-04-29 19:00:00	3004
11	Polyakov V.M. (rock_4)	76	15	152	2026-04-16 13:35:42	2026-04-29 17:07:29	18932
12	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		22324
13	Vyazovetskov A.S. (alex_v)	11	216	264	2026-04-22 19:15:17		23166
14	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		53878
15	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		147105
16	Lukov D.R. (Gendalf)	246	0	32	2025-12-05 01:36:21		222945
17	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		434648
18	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		556369
19	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		638523
20	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		668771
21	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		680960
22	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		828812
23	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		830121
24	Frolov K.A. (Murderface_)	134	0	138	2024-09-23 14:49:59		852871
25	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		962410
26	Slavutinskij V.V. (Vasilko)	455	0	5	2024-04-22 17:26:35		1074475
27	Slavutinskij V.V. (Vasilko)	455	0	7	2024-04-22 17:26:21		1074475
28	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1103631
29	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1130151
30	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		1143783
31	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1209826
32	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1213139
33	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1215529
34	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1248194
35	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1300457
36	Rudikov E. (cubie)	135	0	138	2023-10-31 17:27:54		1325033
37	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1641611
38	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1745599
39	Koptel'tsev V. (selber)	19	129	237	2022-11-06 21:16:51		1841764
40	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		1880973
41	Lukov D.R. (Gendalf)	246	0	90	2022-07-21 11:18:50		1997882
42	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2144463
43	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2396220
44	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2524572
45	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2658926
46	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2701113
47	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2704860
48	Kozharinov A. (bubala)	212	0	10	2020-09-30 09:55:07		2946926
49	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		3014289
50	Koptel'tsev V. (selber)	19	129	259	2020-06-24 00:22:07		3088619
51	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		3153573
52	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		3161544
53	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3201058
54	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3224786
55	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3535175
56	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3562457
57	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3570519
58	Kordyum A. (alko58)	230	0	12	2019-07-12 15:58:52		3588802
59	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3632881
60	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3772856
61	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		3871124
62	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		3874305
63	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4016496
64	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4077043
65	Voevutskij S.A. (SergLK)	218	0	45	2018-07-01 13:19:14		4130402
66	Zyrin V.E. (Vezyr)	549	0	29	2018-05-29 14:14:19		4177867
67	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4269933
68	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4273843
69	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4273921
70	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4296551
71	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4310708
72	F (uff)	65	25	95	2018-01-22 15:57:03		4360644
73	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4412312
74	Kordyum A. (alko58)	230	0	101	2017-11-21 18:18:43		4449782
75	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4451544
76	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4452612
77	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4490327
78	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4517444
79	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4550507
80	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4627152
81	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4673696
82	Vorob'ev E.V. (Johnnymnemonic)	162	0	138	2017-06-16 09:15:49		4677845
83	F (uff)	65	25	185	2017-06-01 10:27:49		4699373
84	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4739246
85	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4801137
86	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5036041
87	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		5071514
88	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		5150737
89	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5281072
90	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5323172
91	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5492592
92	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5524280
93	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5558279
94	Fomichev A.V. (Fomichev)	199	0	101	2015-10-07 11:21:04		5567640
95	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5593486
96	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5607790
97	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5609476
98	Varenikov D.M. (Dmitriy Varenikov)	20	128	263	2015-08-31 08:35:37		5621086
99	Chebykin D. (GriGrim)	39	62	263	2015-08-28 21:04:30		5624657
100	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5627988

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