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SQL exercises

August 16, 10:34 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: 15144

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	15	180	206	2026-08-15 14:26:50		1208
2	Sarkis'yan G. (gennadi_s)	15	180	205	2026-08-07 13:45:21	2026-08-10 17:09:13	4524
3	Sarkis'yan G. (gennadi_s)	15	180	204	2026-08-04 12:34:26	2026-08-04 13:41:32	67
4	Williams B. (BW)	35	67	252	2026-07-31 13:33:49		22861
5	Williams B. (BW)	35	67	264	2026-07-29 13:21:27		25753
6	Sigankov V.I. (vasilyvanc)	33	74	216	2026-07-23 12:13:08		34462
7	Sigankov V.I. (vasilyvanc)	33	74	241	2026-07-21 14:05:13		37229
8	Zajtsev V.S. (Sleeping)	22	118	241	2026-06-16 18:38:55		87356
9	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		121785
10	Komarov A.N. (Shveda Saulya)	37	65	160	2026-05-09 13:24:21		142390
11	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		155449
12	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		165677
13	Vyazovetskov A.S. (alex_v)	6	245	264	2026-04-22 19:15:17		166519
14	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		197231
15	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		290458
16	Lukov D.R. (Gendalf)	247	0	32	2025-12-05 01:36:21		366298
17	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		578002
18	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		812125
19	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		824313
20	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		972166
21	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		973474
22	Frolov K.A. (Murderface_)	135	0	138	2024-09-23 14:49:59		996225
23	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1105763
24	Slavutinskij V.V. (Vasilko)	455	0	5	2024-04-22 17:26:35		1217828
25	Slavutinskij V.V. (Vasilko)	455	0	7	2024-04-22 17:26:21		1217828
26	Williams B. (BW)	35	67	141	2024-04-02 11:30:28		1246984
27	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1273505
28	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1287137
29	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1353179
30	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1356493
31	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1358883
32	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1391547
33	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1443810
34	Rudikov E. (cubie)	136	0	138	2023-10-31 17:27:54		1468387
35	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1784964
36	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1888953
37	Koptel'tsev V. (selber)	19	133	237	2022-11-06 21:16:51		1985118
38	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		2024326
39	Lukov D.R. (Gendalf)	247	0	90	2022-07-21 11:18:50		2141236
40	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2287817
41	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2539574
42	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2667926
43	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2802280
44	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2844466
45	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2848213
46	Kozharinov A. (bubala)	213	0	10	2020-09-30 09:55:07		3090280
47	Samarin A. (not.yet.sql.master)	147	0	112	2020-08-14 15:12:10		3157642
48	Koptel'tsev V. (selber)	19	133	259	2020-06-24 00:22:07		3231973
49	Samarin A. (not.yet.sql.master)	147	0	138	2020-05-09 21:48:04		3296927
50	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3304897
51	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3344412
52	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3368139
53	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3678528
54	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3705810
55	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3713872
56	Kordyum A. (alko58)	231	0	12	2019-07-12 15:58:52		3732156
57	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3776234
58	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3916209
59	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		4014477
60	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		4017658
61	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4159849
62	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4220396
63	Voevutskij S.A. (SergLK)	219	0	45	2018-07-01 13:19:14		4273755
64	Zyrin V.E. (Vezyr)	552	0	29	2018-05-29 14:14:19		4321220
65	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4413287
66	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4417196
67	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4417275
68	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4439904
69	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4454061
70	F (uff)	65	25	95	2018-01-22 15:57:03		4503998
71	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4555666
72	Kordyum A. (alko58)	231	0	101	2017-11-21 18:18:43		4593136
73	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4594897
74	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4595965
75	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4633680
76	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4660797
77	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4693860
78	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4770505
79	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4817050
80	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4821199
81	F (uff)	65	25	185	2017-06-01 10:27:49		4842727
82	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4882600
83	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4944491
84	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5179394
85	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5214867
86	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5294091
87	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5424426
88	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5466525
89	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5635946
90	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5667633
91	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5701632
92	Fomichev A.V. (Fomichev)	200	0	101	2015-10-07 11:21:04		5710994
93	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5736840
94	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5751144
95	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5752830
96	Varenikov D.M. (Dmitriy Varenikov)	20	130	263	2015-08-31 08:35:37		5764439
97	Chebykin D. (GriGrim)	39	62	263	2015-08-28 21:04:30		5768010
98	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5771341
99	Maslyaev V.S. (Velmont)	91	11	140	2015-07-27 05:27:50		5815027
100	Khromulyak O.M. (ChOleg)	121	5	150	2015-07-26 08:20:51		5816294

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