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SQL exercises

June 28, 14:07 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: 15114

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Williams B. (BW)	35	66	262	2025-04-17 12:32:37	2026-06-24 13:25:33	623573
2	Williams B. (BW)	35	66	24	2026-05-15 13:25:32	2026-06-22 22:34:12	55269
3	Zajtsev V.S. (Sleeping)	22	118	241	2026-06-16 18:38:55		17009
4	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		51438
5	Koptel'tsev V. (selber)	19	129	241	2026-05-23 20:23:43		51464
6	Komarov A.N. (Shveda Saulya)	37	65	160	2026-05-09 13:24:21		72043
7	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		85102
8	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		95330
9	Vyazovetskov A.S. (alex_v)	7	241	264	2026-04-22 19:15:17		96172
10	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		126884
11	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		220111
12	Lukov D.R. (Gendalf)	245	0	32	2025-12-05 01:36:21		295951
13	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		507655
14	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		711530
15	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		741778
16	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		753966
17	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		901819
18	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		903127
19	Frolov K.A. (Murderface_)	134	0	138	2024-09-23 14:49:59		925878
20	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1035416
21	Slavutinskij V.V. (Vasilko)	455	0	5	2024-04-22 17:26:35		1147481
22	Slavutinskij V.V. (Vasilko)	455	0	7	2024-04-22 17:26:21		1147481
23	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1176637
24	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1203158
25	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1216790
26	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1282832
27	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1286146
28	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1288536
29	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1321200
30	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1373463
31	Rudikov E. (cubie)	135	0	138	2023-10-31 17:27:54		1398040
32	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1714617
33	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1818606
34	Koptel'tsev V. (selber)	19	129	237	2022-11-06 21:16:51		1914771
35	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		1953979
36	Lukov D.R. (Gendalf)	245	0	90	2022-07-21 11:18:50		2070889
37	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2217470
38	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2469227
39	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2597579
40	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2731932
41	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2774119
42	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2777866
43	Kozharinov A. (bubala)	212	0	10	2020-09-30 09:55:07		3019933
44	Samarin A. (not.yet.sql.master)	146	0	112	2020-08-14 15:12:10		3087295
45	Koptel'tsev V. (selber)	19	129	259	2020-06-24 00:22:07		3161626
46	Samarin A. (not.yet.sql.master)	146	0	138	2020-05-09 21:48:04		3226580
47	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3234550
48	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3274065
49	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3297792
50	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3608181
51	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3635463
52	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3643525
53	Kordyum A. (alko58)	230	0	12	2019-07-12 15:58:52		3661809
54	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3705887
55	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3845862
56	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		3944130
57	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		3947311
58	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4089502
59	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4150049
60	Voevutskij S.A. (SergLK)	218	0	45	2018-07-01 13:19:14		4203408
61	Zyrin V.E. (Vezyr)	550	0	29	2018-05-29 14:14:19		4250873
62	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4342940
63	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4346849
64	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4346928
65	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4369557
66	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4383714
67	F (uff)	65	25	95	2018-01-22 15:57:03		4433651
68	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4485319
69	Kordyum A. (alko58)	230	0	101	2017-11-21 18:18:43		4522789
70	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4524550
71	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4525618
72	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4563333
73	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4590450
74	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4623513
75	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4700158
76	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4746703
77	Vorob'ev E.V. (Johnnymnemonic)	163	0	138	2017-06-16 09:15:49		4750852
78	F (uff)	65	25	185	2017-06-01 10:27:49		4772380
79	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4812253
80	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4874144
81	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5109047
82	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5144520
83	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5223744
84	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5354079
85	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5396178
86	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5565599
87	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5597286
88	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5631285
89	Fomichev A.V. (Fomichev)	199	0	101	2015-10-07 11:21:04		5640647
90	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5666493
91	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5680797
92	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5682483
93	Varenikov D.M. (Dmitriy Varenikov)	20	129	263	2015-08-31 08:35:37		5694092
94	Chebykin D. (GriGrim)	39	62	263	2015-08-28 21:04:30		5697663
95	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5700994
96	Maslyaev V.S. (Velmont)	91	11	140	2015-07-27 05:27:50		5744680
97	Khromulyak O.M. (ChOleg)	121	5	150	2015-07-26 08:20:51		5745947
98	Chebykin D. (GriGrim)	39	62	216	2015-07-20 09:39:02		5754509
99	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5764239
100	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5772866

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