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SQL exercises

October 23, 23:08 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: 13900

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	13	192	192	2026-10-17 13:29:17	2026-10-22 14:52:53	7284
2	Frolov K.A. (Murderface_)	136	0	53	2026-10-19 19:02:15		6006
3	Krasovskij E.A. (pegoopik)	1	268	192	2026-10-16 18:51:16	2026-10-16 18:51:23	0
4	Safronov P.A. (Paulus73)	117	6	140	2026-10-09 09:42:14	2026-10-15 12:25:59	8804
5	Vinogradova S.M. (Tigra1)	125	4	141	2026-10-10 17:01:15		19087
6	Sarkis'yan G. (gennadi_s)	13	192	208	2026-10-08 15:07:00	2026-10-10 12:57:58	2751
7	Kostomarov A.V. (al29)	5	245	53	2026-09-30 08:53:59		33974
8	Koptel'tsev V. (selber)	18	133	183	2026-09-07 08:11:06		67137
9	Komarov A.N. (Shveda Saulya)	35	68	165	2026-08-28 13:41:52		81206
10	Koptel'tsev V. (selber)	18	133	188	2026-08-21 06:33:00		91715
11	Williams B. (BW)	36	65	252	2026-07-31 13:33:49		121534
12	Williams B. (BW)	36	65	264	2026-07-29 13:21:27		124427
13	Sigankov V.I. (vasilyvanc)	33	72	216	2026-07-23 12:13:08		133135
14	Sigankov V.I. (vasilyvanc)	33	72	241	2026-07-21 14:05:13		135903
15	Zajtsev V.S. (Sleeping)	22	116	241	2026-06-16 18:38:55		186029
16	Chernov D.V. (Kursist)	3	260	241	2026-05-23 20:49:50		220458
17	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		254123
18	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		264351
19	Vyazovetskov A.S. (alex_v)	6	243	264	2026-04-22 19:15:17		265193
20	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		295905
21	Petrov Y. (YuriPetrov)	32	76	210	2026-01-26 17:36:12		389132
22	Lukov D.R. (Gendalf)	248	0	32	2025-12-05 01:36:21		464972
23	Chebykin D. (GriGrim)	39	60	210	2025-07-11 01:12:59		676675
24	Chuvstvin M. (chuvstvinmaxim)	92	9	141	2025-01-29 11:09:56		910798
25	Chuvstvin M. (chuvstvinmaxim)	92	9	258	2025-01-21 00:01:28		922987
26	Lyubomudrov R.G. (born2tilt)	73	20	162	2024-10-10 07:48:40		1070840
27	Lyubomudrov R.G. (born2tilt)	73	20	202	2024-10-09 10:00:37		1072148
28	Frolov K.A. (Murderface_)	136	0	138	2024-09-23 14:49:59		1094898
29	Zajtsev V.S. (Sleeping)	22	116	164	2024-07-09 13:11:22		1204437
30	Slavutinskij V.V. (Vasilko)	459	0	5	2024-04-22 17:26:35		1316502
31	Slavutinskij V.V. (Vasilko)	459	0	7	2024-04-22 17:26:21		1316502
32	Williams B. (BW)	36	65	141	2024-04-02 11:30:28		1345658
33	Kukushkin S.A. (smog)	16	151	194	2024-03-15 01:29:39		1372179
34	Latyntsev N.G. (aks_nsk)	54	35	253	2024-03-05 14:17:51		1385810
35	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1451853
36	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1455167
37	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1457556
38	Nikolaenko A.V. (Shadow77)	82	14	135	2023-12-24 02:07:10		1490221
39	Boiko D. (Angellore)	9	231	262	2023-11-17 19:04:36		1542484
40	Rudikov E. (cubie)	137	0	138	2023-10-31 17:27:54		1567060
41	Shkarednyj I.N. (Gosha)	37	64	198	2023-03-25 21:10:27		1883638
42	Latyntsev N.G. (aks_nsk)	54	35	255	2023-01-12 16:01:39		1987627
43	Koptel'tsev V. (selber)	18	133	237	2022-11-06 21:16:51		2083791
44	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		2123000
45	Lukov D.R. (Gendalf)	248	0	90	2022-07-21 11:18:50		2239909
46	Pavlov A.V. (Anton)	59	29	141	2022-04-10 16:17:39		2386491
47	Sigankov V.I. (vasilyvanc)	33	72	161	2021-10-17 20:21:01		2638247
48	Fedevych V.I. (labuch_fedev)	38	63	221	2021-07-20 17:09:05		2766599
49	Pusev D.V. (Pusev_Denis)	19	132	234	2021-04-18 09:55:08		2900953
50	Kukushkin S.A. (smog)	16	151	12	2021-03-20 02:48:36		2943140
51	Pusev D.V. (Pusev_Denis)	19	132	159	2021-03-17 12:21:10		2946887
52	Kozharinov A. (bubala)	215	0	10	2020-09-30 09:55:07		3188953
53	Samarin A. (not.yet.sql.master)	148	0	112	2020-08-14 15:12:10		3256316
54	Koptel'tsev V. (selber)	18	133	259	2020-06-24 00:22:07		3330646
55	Samarin A. (not.yet.sql.master)	148	0	138	2020-05-09 21:48:04		3395600
56	Karasyova N.V. (vlksm)	10	223	230	2020-05-04 08:57:25		3403571
57	Fedevych V.I. (labuch_fedev)	38	63	226	2020-04-06 22:22:48		3443085
58	Pusev D.V. (Pusev_Denis)	19	132	184	2020-03-21 10:55:32		3466813
59	Fokin A. (Vizitor )	44	50	263	2019-08-18 21:46:14		3777202
60	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3804484
61	Romanov K.Yu. (kostik)	313	0	12	2019-07-25 08:42:10		3812546
62	Kordyum A. (alko58)	233	0	12	2019-07-12 15:58:52		3830829
63	Pavlov A.V. (Anton)	59	29	168	2019-06-12 01:20:21		3874908
64	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		4014883
65	Kurochkin P.A. (qwrqwr)	12	209	227	2018-12-28 14:37:25		4113151
66	Grishunin M.F. (MikhailFG)	90	10	144	2018-12-26 09:36:27		4116332
67	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4258523
68	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4319070
69	Voevutskij S.A. (SergLK)	221	0	45	2018-07-01 13:19:14		4372429
70	Zyrin V.E. (Vezyr)	553	0	29	2018-05-29 14:14:19		4419894
71	Chebykin D. (GriGrim)	39	60	228	2018-03-26 15:47:45		4511960
72	Shkarednyj I.N. (Gosha)	37	64	151	2018-03-23 22:38:32		4515870
73	Boiko D. (Angellore)	9	231	229	2018-03-23 21:19:51		4515948
74	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4538578
75	Shkarednyj I.N. (Gosha)	37	64	147	2018-02-26 08:13:30		4552735
76	F (uff)	66	23	95	2018-01-22 15:57:03		4602671
77	Aliev R. (y4nzi)	27	93	259	2017-12-17 18:48:39		4654340
78	Kordyum A. (alko58)	233	0	101	2017-11-21 18:18:43		4691810
79	Zajtsev V.S. (Sleeping)	22	116	190	2017-11-20 12:57:31		4693571
80	Aliev R. (y4nzi)	27	93	257	2017-11-19 19:09:17		4694639
81	Aliev R. (y4nzi)	27	93	255	2017-10-24 14:34:21		4732354
82	Kukushkin S.A. (smog)	16	151	171	2017-10-05 18:37:27		4759471
83	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4792534
84	Grinkevich D.L. (Dmitrij Grinkevich)	23	107	115	2017-07-21 14:09:37		4869179
85	Bezhaev A.Yu. (Baser)	8	234	220	2017-06-19 06:24:54		4915723
86	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4919872
87	F (uff)	66	23	185	2017-06-01 10:27:49		4941400
88	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4981273
89	Movlyanov A.P. (Oct)	14	191	218	2017-03-22 18:23:50		5043164
90	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5278068
91	Sysoev A.V. (Sysa)	53	37	165	2016-09-16 00:07:24		5313541
92	Sysoev A.V. (Sysa)	53	37	168	2016-07-22 23:44:07		5392764
93	Karasyova N.V. (vlksm)	10	223	263	2016-04-23 11:28:43		5523100
94	Titovskij P.S. (kli3ma)	46	45	164	2016-03-25 05:49:30		5565199
95	Sivoglazov M.A. (Gaizenberg)	70	22	127	2015-11-28 14:08:52		5734619
96	Maslyaev V.S. (Velmont)	94	9	170	2015-11-06 14:01:20		5766307
97	Sivoglazov M.A. (Gaizenberg)	70	22	261	2015-10-13 23:22:26		5800306
98	Fomichev A.V. (Fomichev)	200	0	101	2015-10-07 11:21:04		5809667
99	Grinkevich D.L. (Dmitrij Grinkevich)	23	107	188	2015-09-19 12:34:48		5835513
100	Movlyanov A.P. (Oct)	14	191	194	2015-09-09 14:10:52		5849817

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