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SQL exercises

July 31, 19:25 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: 15148

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Williams B. (BW)	35	67	252	2026-07-31 13:33:49		351
2	Williams B. (BW)	35	67	236	2026-07-29 13:21:56	2026-07-31 13:32:08	2890
3	Vyazovetskov A.S. (alex_v)	6	245	181	2026-07-29 14:43:59	2026-07-30 18:38:40	1675
4	Williams B. (BW)	35	67	264	2026-07-29 13:21:27		3244
5	Williams B. (BW)	35	67	308	2026-07-23 14:59:30	2026-07-29 13:19:06	8540
6	Sarkis'yan G. (gennadi_s)	15	176	203	2026-07-28 14:11:50	2026-07-28 15:38:56	87
7	Filippkin D.V. (_dimon_)	3	259	264	2026-07-23 15:54:45	2026-07-23 15:55:46	1
8	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04	2026-07-23 15:27:06	747609
9	Sigankov V.I. (vasilyvanc)	33	74	216	2026-07-23 12:13:08		11952
10	Sigankov V.I. (vasilyvanc)	33	74	241	2026-07-21 14:05:13		14720
11	Sarkis'yan G. (gennadi_s)	15	176	202	2026-07-19 14:34:28	2026-07-20 18:03:08	1649
12	Krasovskij E.A. (pegoopik)	1	265	242	2026-07-18 10:53:25	2026-07-18 19:12:40	499
13	Sarkis'yan G. (gennadi_s)	15	176	242	2026-07-18 13:38:46	2026-07-18 13:39:00	0
14	Koptel'tsev V. (selber)	19	130	198	2026-07-12 02:54:38		28350
15	Zajtsev V.S. (Sleeping)	22	118	241	2026-06-16 18:38:55		64846
16	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		99275
17	Komarov A.N. (Shveda Saulya)	37	65	160	2026-05-09 13:24:21		119881
18	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		132940
19	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		143168
20	Vyazovetskov A.S. (alex_v)	6	245	264	2026-04-22 19:15:17		144010
21	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		174722
22	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		267949
23	Lukov D.R. (Gendalf)	247	0	32	2025-12-05 01:36:21		343789
24	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		555492
25	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		789615
26	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		801804
27	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		949656
28	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		950964
29	Frolov K.A. (Murderface_)	135	0	138	2024-09-23 14:49:59		973715
30	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1083254
31	Slavutinskij V.V. (Vasilko)	455	0	5	2024-04-22 17:26:35		1195319
32	Slavutinskij V.V. (Vasilko)	455	0	7	2024-04-22 17:26:21		1195319
33	Williams B. (BW)	35	67	141	2024-04-02 11:30:28		1224475
34	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1250995
35	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1264627
36	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1330670
37	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1333983
38	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1336373
39	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1369038
40	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1421300
41	Rudikov E. (cubie)	136	0	138	2023-10-31 17:27:54		1445877
42	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1762455
43	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1866443
44	Koptel'tsev V. (selber)	19	130	237	2022-11-06 21:16:51		1962608
45	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		2001817
46	Lukov D.R. (Gendalf)	247	0	90	2022-07-21 11:18:50		2118726
47	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2265307
48	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2517064
49	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2645416
50	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2779770
51	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2821956
52	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2825704
53	Kozharinov A. (bubala)	213	0	10	2020-09-30 09:55:07		3067770
54	Samarin A. (not.yet.sql.master)	147	0	112	2020-08-14 15:12:10		3135133
55	Koptel'tsev V. (selber)	19	130	259	2020-06-24 00:22:07		3209463
56	Samarin A. (not.yet.sql.master)	147	0	138	2020-05-09 21:48:04		3274417
57	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3282388
58	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3321902
59	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3345630
60	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3656019
61	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3683301
62	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3691363
63	Kordyum A. (alko58)	231	0	12	2019-07-12 15:58:52		3709646
64	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3753725
65	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3893700
66	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		3991968
67	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		3995149
68	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4137340
69	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4197887
70	Voevutskij S.A. (SergLK)	219	0	45	2018-07-01 13:19:14		4251246
71	Zyrin V.E. (Vezyr)	552	0	29	2018-05-29 14:14:19		4298711
72	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4390777
73	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4394687
74	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4394765
75	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4417395
76	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4431552
77	F (uff)	65	25	95	2018-01-22 15:57:03		4481488
78	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4533156
79	Kordyum A. (alko58)	231	0	101	2017-11-21 18:18:43		4570626
80	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4572388
81	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4573456
82	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4611171
83	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4638288
84	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4671351
85	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4747995
86	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4794540
87	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4798689
88	F (uff)	65	25	185	2017-06-01 10:27:49		4820217
89	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4860090
90	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4921981
91	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5156885
92	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5192358
93	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5271581
94	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5401916
95	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5444016
96	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5613436
97	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5645124
98	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5679123
99	Fomichev A.V. (Fomichev)	200	0	101	2015-10-07 11:21:04		5688484
100	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5714330

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