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SQL exercises

May 16, 05:29 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: 15093

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	29	86	169	2025-05-10 14:31:13		8098
2	Sarkis'yan G. (gennadi_s)	29	86	168	2025-05-02 13:19:35	2025-05-05 14:34:28	4395
3	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		41336
4	Fomichev A.V. (Fomichev)	194	0	7	2025-02-25 02:16:37		115392
5	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		123491
6	Chuvstvin M. (chuvstvinmaxim)	87	11	141	2025-01-29 11:09:56		153739
7	Chuvstvin M. (chuvstvinmaxim)	87	11	258	2025-01-21 00:01:28		165928
8	Lyubomudrov R.G. (born2tilt)	70	22	162	2024-10-10 07:48:40		313780
9	Lyubomudrov R.G. (born2tilt)	70	22	202	2024-10-09 10:00:37		315088
10	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		337839
11	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		365279
12	Zajtsev V.S. (Sleeping)	21	112	164	2024-07-09 13:11:22		447378
13	Slavutinskij V.V. (Vasilko)	445	0	5	2024-04-22 17:26:35		559442
14	Slavutinskij V.V. (Vasilko)	445	0	7	2024-04-22 17:26:21		559443
15	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		588599
16	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		615119
17	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		628751
18	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		694794
19	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		698107
20	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		700497
21	Nikolaenko A.V. (Shadow77)	82	14	135	2023-12-24 02:07:10		733162
22	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		778338
23	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		785424
24	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		810001
25	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1055033
26	Zajtsev V.S. (Sleeping)	21	112	150	2023-04-18 11:40:16		1092589
27	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1126579
28	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1230567
29	Koptel'tsev V. (selber)	20	113	237	2022-11-06 21:16:51		1326732
30	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1365941
31	Lukov D.R. (Gendalf)	240	0	90	2022-07-21 11:18:50		1482850
32	Pavlov A.V. (Anton)	59	29	141	2022-04-10 16:17:39		1629431
33	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1743481
34	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		1881188
35	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2009540
36	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2143894
37	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2186080
38	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2189828
39	Kozharinov A. (bubala)	204	0	10	2020-09-30 09:55:07		2431894
40	Samarin A. (not.yet.sql.master)	139	0	112	2020-08-14 15:12:10		2499257
41	Koptel'tsev V. (selber)	20	113	259	2020-06-24 00:22:07		2573587
42	Samarin A. (not.yet.sql.master)	139	0	138	2020-05-09 21:48:04		2638541
43	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2646512
44	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2686026
45	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2709754
46	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3020143
47	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3047425
48	Romanov K.Yu. (kostik)	304	0	12	2019-07-25 08:42:10		3055487
49	Kordyum A. (alko58)	223	0	12	2019-07-12 15:58:52		3073770
50	Pavlov A.V. (Anton)	59	29	168	2019-06-12 01:20:21		3117849
51	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3257824
52	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3356092
53	Grishunin M.F. (MikhailFG)	91	10	144	2018-12-26 09:36:27		3359273
54	Shindin A.V. (AlShin)	24	99	45	2018-09-18 15:45:28		3501464
55	Skorohod I. (Dracul4ik)	77	15	45	2018-08-07 14:38:23		3562011
56	Voevutskij S.A. (SergLK)	209	0	45	2018-07-01 13:19:14		3615370
57	Zyrin V.E. (Vezyr)	536	0	29	2018-05-29 14:14:19		3662835
58	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3754901
59	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3758811
60	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3758889
61	Azbel' E.G. (enull)	76	15	148	2018-03-08 04:10:21		3781519
62	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		3795676
63	F (uff)	64	25	95	2018-01-22 15:57:03		3845612
64	Aliev R. (y4nzi)	26	95	259	2017-12-17 18:48:39		3897280
65	Kordyum A. (alko58)	223	0	101	2017-11-21 18:18:43		3934750
66	Zajtsev V.S. (Sleeping)	21	112	190	2017-11-20 12:57:31		3936512
67	Aliev R. (y4nzi)	26	95	257	2017-11-19 19:09:17		3937580
68	Aliev R. (y4nzi)	26	95	255	2017-10-24 14:34:21		3975295
69	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4002412
70	Skorohod I. (Dracul4ik)	77	15	156	2017-09-12 19:34:33		4035474
71	Grinkevich D.L. (Dmitrij Grinkevich)	22	109	115	2017-07-21 14:09:37		4112119
72	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4158664
73	Vorob'ev E.V. (Johnnymnemonic)	157	0	138	2017-06-16 09:15:49		4162813
74	F (uff)	64	25	185	2017-06-01 10:27:49		4184341
75	Skorohod I. (Dracul4ik)	77	15	146	2017-05-04 17:54:53		4224214
76	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4286105
77	Skorohod I. (Dracul4ik)	77	15	144	2016-10-10 15:20:14		4521009
78	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4556482
79	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4635705
80	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4766040
81	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		4808140
82	Sivoglazov M.A. (Gaizenberg)	65	24	127	2015-11-28 14:08:52		4977560
83	Maslyaev V.S. (Velmont)	89	11	170	2015-11-06 14:01:20		5009248
84	Sivoglazov M.A. (Gaizenberg)	65	24	261	2015-10-13 23:22:26		5043247
85	Fomichev A.V. (Fomichev)	194	0	101	2015-10-07 11:21:04		5052608
86	Grinkevich D.L. (Dmitrij Grinkevich)	22	109	188	2015-09-19 12:34:48		5078454
87	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5092758
88	Frolov (dr.shtopor)	80	14	141	2015-09-08 10:04:55		5094444
89	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		5106053
90	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5109625
91	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5112956
92	Maslyaev V.S. (Velmont)	89	11	140	2015-07-27 05:27:50		5156641
93	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5157908
94	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5166470
95	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5176200
96	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5184827
97	Skorohod I. (Dracul4ik)	77	15	256	2015-01-28 15:03:11		5415266
98	Skorohod I. (Dracul4ik)	77	15	252	2015-01-27 11:56:41		5416892
99	Sysoev A.V. (Sysa)	49	39	143	2014-12-25 01:16:19		5465053
100	Grishin (alvigr)	78	15	185	2014-12-05 11:56:29		5493213

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