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SQL exercises

July 20, 10:35 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: 15134

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	15	173	202	2026-07-19 14:34:28		1201
2	Krasovskij E.A. (pegoopik)	1	265	242	2026-07-18 10:53:25	2026-07-18 19:12:40	499
3	Sarkis'yan G. (gennadi_s)	15	173	242	2026-07-18 13:38:46	2026-07-18 13:39:00	0
4	Timofeeva E.V. (Umrikhina)	26	96	24	2026-07-15 10:55:13	2026-07-15 11:24:36	29
5	Safronov P.A. (Paulus73)	134	0	137	2026-07-13 10:19:08	2026-07-14 00:12:15	833
6	Koptel'tsev V. (selber)	19	130	198	2026-07-12 02:54:38		11981
7	Safronov P.A. (Paulus73)	134	0	136	2026-07-10 10:15:27	2026-07-10 15:00:38	285
8	Safronov P.A. (Paulus73)	134	0	135	2026-07-09 10:47:01	2026-07-10 00:27:56	821
9	Safronov P.A. (Paulus73)	134	0	134	2026-07-08 10:21:00	2026-07-08 15:48:42	328
10	Safronov P.A. (Paulus73)	134	0	133	2026-07-07 10:28:03	2026-07-07 11:59:53	92
11	Koptel'tsev V. (selber)	19	130	241	2026-05-23 20:23:43	2026-07-07 07:38:38	64035
12	Zajtsev V.S. (Sleeping)	22	118	241	2026-06-16 18:38:55		48476
13	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		82905
14	Komarov A.N. (Shveda Saulya)	37	65	160	2026-05-09 13:24:21		103511
15	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		116570
16	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		126798
17	Vyazovetskov A.S. (alex_v)	7	241	264	2026-04-22 19:15:17		127640
18	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		158352
19	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		251579
20	Lukov D.R. (Gendalf)	247	0	32	2025-12-05 01:36:21		327419
21	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		539122
22	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		742997
23	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		773245
24	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		785434
25	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		933287
26	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		934595
27	Frolov K.A. (Murderface_)	135	0	138	2024-09-23 14:49:59		957345
28	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1066884
29	Slavutinskij V.V. (Vasilko)	455	0	5	2024-04-22 17:26:35		1178949
30	Slavutinskij V.V. (Vasilko)	455	0	7	2024-04-22 17:26:21		1178949
31	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1208105
32	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1234626
33	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1248257
34	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1314300
35	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1317614
36	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1320003
37	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1352668
38	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1404931
39	Rudikov E. (cubie)	136	0	138	2023-10-31 17:27:54		1429507
40	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1746085
41	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1850074
42	Koptel'tsev V. (selber)	19	130	237	2022-11-06 21:16:51		1946238
43	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		1985447
44	Lukov D.R. (Gendalf)	247	0	90	2022-07-21 11:18:50		2102356
45	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2248938
46	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2500694
47	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2629046
48	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2763400
49	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2805587
50	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2809334
51	Kozharinov A. (bubala)	213	0	10	2020-09-30 09:55:07		3051400
52	Samarin A. (not.yet.sql.master)	147	0	112	2020-08-14 15:12:10		3118763
53	Koptel'tsev V. (selber)	19	130	259	2020-06-24 00:22:07		3193093
54	Samarin A. (not.yet.sql.master)	147	0	138	2020-05-09 21:48:04		3258047
55	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3266018
56	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3305532
57	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3329260
58	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3639649
59	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3666931
60	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3674993
61	Kordyum A. (alko58)	231	0	12	2019-07-12 15:58:52		3693276
62	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3737355
63	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3877330
64	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		3975598
65	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		3978779
66	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4120970
67	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4181517
68	Voevutskij S.A. (SergLK)	219	0	45	2018-07-01 13:19:14		4234876
69	Zyrin V.E. (Vezyr)	552	0	29	2018-05-29 14:14:19		4282341
70	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4374407
71	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4378317
72	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4378395
73	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4401025
74	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4415182
75	F (uff)	65	25	95	2018-01-22 15:57:03		4465118
76	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4516787
77	Kordyum A. (alko58)	231	0	101	2017-11-21 18:18:43		4554256
78	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4556018
79	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4557086
80	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4594801
81	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4621918
82	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4654981
83	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4731626
84	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4778170
85	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4782319
86	F (uff)	65	25	185	2017-06-01 10:27:49		4803847
87	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4843720
88	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4905611
89	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5140515
90	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5175988
91	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5255211
92	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5385546
93	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5427646
94	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5597066
95	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5628754
96	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5662753
97	Fomichev A.V. (Fomichev)	200	0	101	2015-10-07 11:21:04		5672114
98	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5697960
99	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5712264
100	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5713950

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