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SQL exercises

September 08, 16:21 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: 15169

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	14	184	207	2026-09-08 14:40:13		101
2	Koptel'tsev V. (selber)	19	133	183	2026-09-07 08:11:06		1930
3	Vinogradova S.M. (Tigra1)	148	0	138	2026-09-06 14:09:20		3012
4	Vinogradova S.M. (Tigra1)	148	0	137	2026-08-30 14:15:52	2026-08-31 22:19:52	1924
5	Vinogradova S.M. (Tigra1)	148	0	136	2026-08-28 10:40:33	2026-08-29 10:38:18	1438
6	Komarov A.N. (Shveda Saulya)	35	68	165	2026-08-28 13:41:52		16000
7	Vinogradova S.M. (Tigra1)	148	0	135	2026-08-26 09:13:14	2026-08-26 13:14:03	241
8	Koptel'tsev V. (selber)	19	133	188	2026-08-21 06:33:00		26509
9	Williams B. (BW)	36	67	252	2026-07-31 13:33:49		56328
10	Williams B. (BW)	36	67	264	2026-07-29 13:21:27		59220
11	Sigankov V.I. (vasilyvanc)	33	74	216	2026-07-23 12:13:08		67928
12	Sigankov V.I. (vasilyvanc)	33	74	241	2026-07-21 14:05:13		70696
13	Zajtsev V.S. (Sleeping)	22	118	241	2026-06-16 18:38:55		120823
14	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		155252
15	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		188916
16	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		199144
17	Vyazovetskov A.S. (alex_v)	6	245	264	2026-04-22 19:15:17		199986
18	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		230698
19	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		323925
20	Lukov D.R. (Gendalf)	247	0	32	2025-12-05 01:36:21		399765
21	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		611469
22	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		845592
23	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		857780
24	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		1005633
25	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		1006941
26	Frolov K.A. (Murderface_)	135	0	138	2024-09-23 14:49:59		1029692
27	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1139230
28	Slavutinskij V.V. (Vasilko)	455	0	5	2024-04-22 17:26:35		1251295
29	Slavutinskij V.V. (Vasilko)	455	0	7	2024-04-22 17:26:21		1251295
30	Williams B. (BW)	36	67	141	2024-04-02 11:30:28		1280451
31	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1306972
32	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1320604
33	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1386646
34	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1389960
35	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1392349
36	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1425014
37	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1477277
38	Rudikov E. (cubie)	136	0	138	2023-10-31 17:27:54		1501854
39	Shkarednyj I.N. (Gosha)	37	66	198	2023-03-25 21:10:27		1818431
40	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1922420
41	Koptel'tsev V. (selber)	19	133	237	2022-11-06 21:16:51		2018585
42	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		2057793
43	Lukov D.R. (Gendalf)	247	0	90	2022-07-21 11:18:50		2174703
44	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2321284
45	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2573040
46	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2701392
47	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2835746
48	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2877933
49	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2881680
50	Kozharinov A. (bubala)	213	0	10	2020-09-30 09:55:07		3123746
51	Samarin A. (not.yet.sql.master)	147	0	112	2020-08-14 15:12:10		3191109
52	Koptel'tsev V. (selber)	19	133	259	2020-06-24 00:22:07		3265439
53	Samarin A. (not.yet.sql.master)	147	0	138	2020-05-09 21:48:04		3330393
54	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3338364
55	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3377879
56	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3401606
57	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3711995
58	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3739277
59	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3747339
60	Kordyum A. (alko58)	231	0	12	2019-07-12 15:58:52		3765623
61	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3809701
62	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3949676
63	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		4047944
64	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		4051125
65	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4193316
66	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4253863
67	Voevutskij S.A. (SergLK)	219	0	45	2018-07-01 13:19:14		4307222
68	Zyrin V.E. (Vezyr)	553	0	29	2018-05-29 14:14:19		4354687
69	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4446754
70	Shkarednyj I.N. (Gosha)	37	66	151	2018-03-23 22:38:32		4450663
71	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4450742
72	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4473371
73	Shkarednyj I.N. (Gosha)	37	66	147	2018-02-26 08:13:30		4487528
74	F (uff)	65	25	95	2018-01-22 15:57:03		4537464
75	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4589133
76	Kordyum A. (alko58)	231	0	101	2017-11-21 18:18:43		4626603
77	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4628364
78	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4629432
79	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4667147
80	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4694264
81	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4727327
82	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4803972
83	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4850517
84	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4854666
85	F (uff)	65	25	185	2017-06-01 10:27:49		4876194
86	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4916067
87	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4977958
88	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5212861
89	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5248334
90	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5327557
91	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5457893
92	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5499992
93	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5669413
94	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5701100
95	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5735099
96	Fomichev A.V. (Fomichev)	200	0	101	2015-10-07 11:21:04		5744460
97	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5770307
98	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5784611
99	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5786297
100	Varenikov D.M. (Dmitriy Varenikov)	20	130	263	2015-08-31 08:35:37		5797906

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