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SQL exercises

July 18, 15:47 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: 15131

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	15	173	242	2026-07-18 13:38:46	2026-07-18 13:39:00	0
2	Krasovskij E.A. (pegoopik)	1	263	242	2026-07-18 10:53:25		294
3	Timofeeva E.V. (Umrikhina)	26	96	24	2026-07-15 10:55:13	2026-07-15 11:24:36	29
4	Safronov P.A. (Paulus73)	134	0	137	2026-07-13 10:19:08	2026-07-14 00:12:15	833
5	Koptel'tsev V. (selber)	19	130	198	2026-07-12 02:54:38		9413
6	Safronov P.A. (Paulus73)	134	0	136	2026-07-10 10:15:27	2026-07-10 15:00:38	285
7	Safronov P.A. (Paulus73)	134	0	135	2026-07-09 10:47:01	2026-07-10 00:27:56	821
8	Safronov P.A. (Paulus73)	134	0	134	2026-07-08 10:21:00	2026-07-08 15:48:42	328
9	Safronov P.A. (Paulus73)	134	0	133	2026-07-07 10:28:03	2026-07-07 11:59:53	92
10	Koptel'tsev V. (selber)	19	130	241	2026-05-23 20:23:43	2026-07-07 07:38:38	64035
11	Safronov P.A. (Paulus73)	134	0	132	2026-07-06 11:09:01	2026-07-06 18:52:03	463
12	Zajtsev V.S. (Sleeping)	22	118	241	2026-06-16 18:38:55		45908
13	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		80338
14	Komarov A.N. (Shveda Saulya)	37	65	160	2026-05-09 13:24:21		100943
15	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		114002
16	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		124230
17	Vyazovetskov A.S. (alex_v)	7	241	264	2026-04-22 19:15:17		125072
18	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		155784
19	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		249011
20	Lukov D.R. (Gendalf)	247	0	32	2025-12-05 01:36:21		324851
21	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		536554
22	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		740429
23	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		770677
24	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		782866
25	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		930719
26	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		932027
27	Frolov K.A. (Murderface_)	135	0	138	2024-09-23 14:49:59		954777
28	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1064316
29	Slavutinskij V.V. (Vasilko)	455	0	5	2024-04-22 17:26:35		1176381
30	Slavutinskij V.V. (Vasilko)	455	0	7	2024-04-22 17:26:21		1176381
31	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1205537
32	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1232058
33	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1245690
34	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1311732
35	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1315046
36	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1317435
37	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1350100
38	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1402363
39	Rudikov E. (cubie)	136	0	138	2023-10-31 17:27:54		1426940
40	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1743517
41	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1847506
42	Koptel'tsev V. (selber)	19	130	237	2022-11-06 21:16:51		1943671
43	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		1982879
44	Lukov D.R. (Gendalf)	247	0	90	2022-07-21 11:18:50		2099789
45	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2246370
46	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2498126
47	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2626478
48	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2760832
49	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2803019
50	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2806766
51	Kozharinov A. (bubala)	213	0	10	2020-09-30 09:55:07		3048832
52	Samarin A. (not.yet.sql.master)	147	0	112	2020-08-14 15:12:10		3116195
53	Koptel'tsev V. (selber)	19	130	259	2020-06-24 00:22:07		3190525
54	Samarin A. (not.yet.sql.master)	147	0	138	2020-05-09 21:48:04		3255479
55	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3263450
56	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3302965
57	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3326692
58	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3637081
59	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3664363
60	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3672425
61	Kordyum A. (alko58)	231	0	12	2019-07-12 15:58:52		3690709
62	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3734787
63	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3874762
64	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		3973030
65	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		3976211
66	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4118402
67	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4178949
68	Voevutskij S.A. (SergLK)	219	0	45	2018-07-01 13:19:14		4232308
69	Zyrin V.E. (Vezyr)	552	0	29	2018-05-29 14:14:19		4279773
70	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4371840
71	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4375749
72	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4375828
73	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4398457
74	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4412614
75	F (uff)	65	25	95	2018-01-22 15:57:03		4462550
76	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4514219
77	Kordyum A. (alko58)	231	0	101	2017-11-21 18:18:43		4551689
78	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4553450
79	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4554518
80	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4592233
81	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4619350
82	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4652413
83	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4729058
84	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4775603
85	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4779752
86	F (uff)	65	25	185	2017-06-01 10:27:49		4801280
87	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4841153
88	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4903044
89	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5137947
90	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5173420
91	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5252643
92	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5382979
93	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5425078
94	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5594499
95	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5626186
96	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5660185
97	Fomichev A.V. (Fomichev)	200	0	101	2015-10-07 11:21:04		5669546
98	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5695393
99	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5709697
100	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5711382

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