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SQL exercises

September 18, 21:21 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: 15181

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	14	187	53	2026-09-18 17:50:12		211
2	Krasovskij E.A. (pegoopik)	1	266	53	2026-09-18 15:39:39	2026-09-18 15:39:44	0
3	Krasovskij E.A. (pegoopik)	1	266	303	2026-09-11 20:13:12	2026-09-11 20:13:42	1
4	Vinogradova S.M. (Tigra1)	148	0	138	2026-09-06 14:09:20	2026-09-11 10:52:12	7003
5	Sarkis'yan G. (gennadi_s)	14	187	207	2026-09-08 14:40:13	2026-09-10 12:22:30	2742
6	Koptel'tsev V. (selber)	19	133	183	2026-09-07 08:11:06		16631
7	Komarov A.N. (Shveda Saulya)	35	68	165	2026-08-28 13:41:52		30700
8	Koptel'tsev V. (selber)	19	133	188	2026-08-21 06:33:00		41209
9	Williams B. (BW)	36	67	252	2026-07-31 13:33:49		71028
10	Williams B. (BW)	36	67	264	2026-07-29 13:21:27		73920
11	Sigankov V.I. (vasilyvanc)	33	74	216	2026-07-23 12:13:08		82628
12	Sigankov V.I. (vasilyvanc)	33	74	241	2026-07-21 14:05:13		85396
13	Zajtsev V.S. (Sleeping)	22	118	241	2026-06-16 18:38:55		135523
14	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		169952
15	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		203616
16	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		213844
17	Vyazovetskov A.S. (alex_v)	6	245	264	2026-04-22 19:15:17		214686
18	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		245398
19	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		338625
20	Lukov D.R. (Gendalf)	247	0	32	2025-12-05 01:36:21		414465
21	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		626169
22	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		860292
23	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		872480
24	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		1020333
25	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		1021641
26	Frolov K.A. (Murderface_)	135	0	138	2024-09-23 14:49:59		1044392
27	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1153930
28	Slavutinskij V.V. (Vasilko)	456	0	5	2024-04-22 17:26:35		1265995
29	Slavutinskij V.V. (Vasilko)	456	0	7	2024-04-22 17:26:21		1265995
30	Williams B. (BW)	36	67	141	2024-04-02 11:30:28		1295151
31	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1321672
32	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1335304
33	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1401346
34	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1404660
35	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1407050
36	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1439714
37	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1491977
38	Rudikov E. (cubie)	136	0	138	2023-10-31 17:27:54		1516554
39	Shkarednyj I.N. (Gosha)	37	66	198	2023-03-25 21:10:27		1833131
40	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1937120
41	Koptel'tsev V. (selber)	19	133	237	2022-11-06 21:16:51		2033285
42	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		2072493
43	Lukov D.R. (Gendalf)	247	0	90	2022-07-21 11:18:50		2189403
44	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2335984
45	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2587741
46	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2716093
47	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2850446
48	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2892633
49	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2896380
50	Kozharinov A. (bubala)	213	0	10	2020-09-30 09:55:07		3138446
51	Samarin A. (not.yet.sql.master)	147	0	112	2020-08-14 15:12:10		3205809
52	Koptel'tsev V. (selber)	19	133	259	2020-06-24 00:22:07		3280139
53	Samarin A. (not.yet.sql.master)	147	0	138	2020-05-09 21:48:04		3345094
54	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3353064
55	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3392579
56	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3416306
57	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3726695
58	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3753977
59	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3762039
60	Kordyum A. (alko58)	231	0	12	2019-07-12 15:58:52		3780323
61	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3824401
62	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3964376
63	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		4062644
64	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		4065825
65	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4208016
66	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4268563
67	Voevutskij S.A. (SergLK)	219	0	45	2018-07-01 13:19:14		4321922
68	Zyrin V.E. (Vezyr)	553	0	29	2018-05-29 14:14:19		4369387
69	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4461454
70	Shkarednyj I.N. (Gosha)	37	66	151	2018-03-23 22:38:32		4465363
71	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4465442
72	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4488071
73	Shkarednyj I.N. (Gosha)	37	66	147	2018-02-26 08:13:30		4502228
74	F (uff)	65	25	95	2018-01-22 15:57:03		4552165
75	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4603833
76	Kordyum A. (alko58)	231	0	101	2017-11-21 18:18:43		4641303
77	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4643064
78	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4644132
79	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4681847
80	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4708964
81	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4742027
82	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4818672
83	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4865217
84	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4869366
85	F (uff)	65	25	185	2017-06-01 10:27:49		4890894
86	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4930767
87	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4992658
88	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5227561
89	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5263034
90	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5342257
91	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5472593
92	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5514692
93	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5684113
94	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5715800
95	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5749799
96	Fomichev A.V. (Fomichev)	200	0	101	2015-10-07 11:21:04		5759161
97	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5785007
98	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5799311
99	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5800997
100	Varenikov D.M. (Dmitriy Varenikov)	20	130	263	2015-08-31 08:35:37		5812606

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