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SQL exercises

February 16, 19:59 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: 15371

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Komarov A.N. (Shveda Saulya)	41	56	150	2023-11-22 17:11:28	2026-02-13 01:49:19	1171238
2	Sarkis'yan G. (gennadi_s)	16	149	194	2026-02-10 15:42:58		8897
3	Sarkis'yan G. (gennadi_s)	16	149	193	2026-02-02 14:48:13	2026-02-06 14:23:09	5735
4	Komarov A.N. (Shveda Saulya)	41	56	149	2023-05-14 13:36:07	2026-02-05 21:16:28	1437580
5	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		30383
6	Lukov D.R. (Gendalf)	244	0	32	2025-12-05 01:36:21		106223
7	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		317927
8	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		439647
9	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		521802
10	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		552050
11	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		564238
12	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		712091
13	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		713399
14	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		736150
15	Komarov A.N. (Shveda Saulya)	41	56	157	2024-09-04 13:29:47		763590
16	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		845688
17	Slavutinskij V.V. (Vasilko)	452	0	5	2024-04-22 17:26:35		957753
18	Slavutinskij V.V. (Vasilko)	452	0	7	2024-04-22 17:26:21		957753
19	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		986909
20	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		1013430
21	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		1027062
22	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1093104
23	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1096418
24	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1098808
25	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1131472
26	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1183735
27	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1208312
28	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1490899
29	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1524889
30	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1628878
31	Koptel'tsev V. (selber)	21	119	237	2022-11-06 21:16:51		1725043
32	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1764251
33	Lukov D.R. (Gendalf)	244	0	90	2022-07-21 11:18:50		1881161
34	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2027742
35	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2279499
36	Fedevych V.I. (labuch_fedev)	37	65	221	2021-07-20 17:09:05		2407851
37	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2542204
38	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2584391
39	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2588138
40	Kozharinov A. (bubala)	209	0	10	2020-09-30 09:55:07		2830205
41	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		2897567
42	Koptel'tsev V. (selber)	21	119	259	2020-06-24 00:22:07		2971898
43	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		3036852
44	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		3044822
45	Fedevych V.I. (labuch_fedev)	37	65	226	2020-04-06 22:22:48		3084337
46	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3108064
47	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3418453
48	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3445735
49	Romanov K.Yu. (kostik)	309	0	12	2019-07-25 08:42:10		3453797
50	Kordyum A. (alko58)	226	0	12	2019-07-12 15:58:52		3472081
51	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3516159
52	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3656134
53	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3754402
54	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3757583
55	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3899774
56	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3960321
57	Voevutskij S.A. (SergLK)	215	0	45	2018-07-01 13:19:14		4013680
58	Zyrin V.E. (Vezyr)	544	0	29	2018-05-29 14:14:19		4061145
59	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		4153212
60	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4157121
61	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4157200
62	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4179829
63	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4193986
64	F (uff)	65	25	95	2018-01-22 15:57:03		4243923
65	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4295591
66	Kordyum A. (alko58)	226	0	101	2017-11-21 18:18:43		4333061
67	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4334822
68	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4335890
69	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4373605
70	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4400722
71	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4433785
72	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4510430
73	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4556975
74	Vorob'ev E.V. (Johnnymnemonic)	161	0	138	2017-06-16 09:15:49		4561124
75	F (uff)	65	25	185	2017-06-01 10:27:49		4582652
76	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4622525
77	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4684416
78	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4919319
79	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4954792
80	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		5034016
81	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5164351
82	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5206450
83	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5375871
84	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5407558
85	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5441557
86	Fomichev A.V. (Fomichev)	196	0	101	2015-10-07 11:21:04		5450919
87	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5476765
88	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5491069
89	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5492755
90	Varenikov D.M. (Dmitriy Varenikov)	19	128	263	2015-08-31 08:35:37		5504364
91	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5507935
92	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5511266
93	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5554952
94	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5556219
95	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5564781
96	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5574511
97	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5583138
98	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5813576
99	Skorohod I. (Dracul4ik)	78	15	252	2015-01-27 11:56:41		5815203
100	Sysoev A.V. (Sysa)	49	39	143	2014-12-25 01:16:19		5863363

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