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SQL exercises

May 25, 22:53 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: 15051

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	29	91	170	2025-05-24 14:28:57	2025-05-25 11:20:34	1252
2	Makarov I.A. (_Bkmz_)	93	9	132	2025-05-24 09:32:58	2025-05-24 15:24:39	352
3	Sarkis'yan G. (gennadi_s)	29	91	169	2025-05-10 14:31:13	2025-05-18 13:39:46	11469
4	Makarov I.A. (_Bkmz_)	93	9	133	2025-05-17 10:35:27	2025-05-17 14:19:16	224
5	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		55341
6	Fomichev A.V. (Fomichev)	195	0	7	2025-02-25 02:16:37		129397
7	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		137496
8	Chuvstvin M. (chuvstvinmaxim)	87	11	141	2025-01-29 11:09:56		167744
9	Chuvstvin M. (chuvstvinmaxim)	87	11	258	2025-01-21 00:01:28		179932
10	Lyubomudrov R.G. (born2tilt)	70	22	162	2024-10-10 07:48:40		327785
11	Lyubomudrov R.G. (born2tilt)	70	22	202	2024-10-09 10:00:37		329093
12	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		351844
13	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		379284
14	Zajtsev V.S. (Sleeping)	21	112	164	2024-07-09 13:11:22		461382
15	Slavutinskij V.V. (Vasilko)	445	0	5	2024-04-22 17:26:35		573447
16	Slavutinskij V.V. (Vasilko)	445	0	7	2024-04-22 17:26:21		573447
17	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		602603
18	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		629124
19	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		642756
20	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		708798
21	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		712112
22	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		714502
23	Nikolaenko A.V. (Shadow77)	82	14	135	2023-12-24 02:07:10		747166
24	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		792342
25	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		799429
26	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		824006
27	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1069037
28	Zajtsev V.S. (Sleeping)	21	112	150	2023-04-18 11:40:16		1106593
29	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1140583
30	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1244572
31	Koptel'tsev V. (selber)	20	113	237	2022-11-06 21:16:51		1340737
32	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1379945
33	Lukov D.R. (Gendalf)	240	0	90	2022-07-21 11:18:50		1496855
34	Pavlov A.V. (Anton)	59	29	141	2022-04-10 16:17:39		1643436
35	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1757486
36	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		1895193
37	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2023544
38	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2157898
39	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2200085
40	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2203832
41	Kozharinov A. (bubala)	205	0	10	2020-09-30 09:55:07		2445898
42	Samarin A. (not.yet.sql.master)	139	0	112	2020-08-14 15:12:10		2513261
43	Koptel'tsev V. (selber)	20	113	259	2020-06-24 00:22:07		2587591
44	Samarin A. (not.yet.sql.master)	139	0	138	2020-05-09 21:48:04		2652546
45	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2660516
46	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2700031
47	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2723758
48	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3034147
49	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3061429
50	Romanov K.Yu. (kostik)	304	0	12	2019-07-25 08:42:10		3069491
51	Kordyum A. (alko58)	223	0	12	2019-07-12 15:58:52		3087775
52	Pavlov A.V. (Anton)	59	29	168	2019-06-12 01:20:21		3131853
53	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3271828
54	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3370096
55	Grishunin M.F. (MikhailFG)	91	10	144	2018-12-26 09:36:27		3373277
56	Shindin A.V. (AlShin)	24	99	45	2018-09-18 15:45:28		3515468
57	Skorohod I. (Dracul4ik)	77	15	45	2018-08-07 14:38:23		3576015
58	Voevutskij S.A. (SergLK)	210	0	45	2018-07-01 13:19:14		3629374
59	Zyrin V.E. (Vezyr)	537	0	29	2018-05-29 14:14:19		3676839
60	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3768906
61	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3772815
62	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3772894
63	Azbel' E.G. (enull)	76	15	148	2018-03-08 04:10:21		3795523
64	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		3809680
65	F (uff)	64	25	95	2018-01-22 15:57:03		3859617
66	Aliev R. (y4nzi)	26	95	259	2017-12-17 18:48:39		3911285
67	Kordyum A. (alko58)	223	0	101	2017-11-21 18:18:43		3948755
68	Zajtsev V.S. (Sleeping)	21	112	190	2017-11-20 12:57:31		3950516
69	Aliev R. (y4nzi)	26	95	257	2017-11-19 19:09:17		3951584
70	Aliev R. (y4nzi)	26	95	255	2017-10-24 14:34:21		3989299
71	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4016416
72	Skorohod I. (Dracul4ik)	77	15	156	2017-09-12 19:34:33		4049479
73	Grinkevich D.L. (Dmitrij Grinkevich)	22	109	115	2017-07-21 14:09:37		4126124
74	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4172669
75	Vorob'ev E.V. (Johnnymnemonic)	157	0	138	2017-06-16 09:15:49		4176818
76	F (uff)	64	25	185	2017-06-01 10:27:49		4198346
77	Skorohod I. (Dracul4ik)	77	15	146	2017-05-04 17:54:53		4238219
78	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4300110
79	Skorohod I. (Dracul4ik)	77	15	144	2016-10-10 15:20:14		4535013
80	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4570486
81	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4649709
82	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4780045
83	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		4822144
84	Sivoglazov M.A. (Gaizenberg)	65	24	127	2015-11-28 14:08:52		4991565
85	Maslyaev V.S. (Velmont)	89	11	170	2015-11-06 14:01:20		5023252
86	Sivoglazov M.A. (Gaizenberg)	65	24	261	2015-10-13 23:22:26		5057251
87	Fomichev A.V. (Fomichev)	195	0	101	2015-10-07 11:21:04		5066613
88	Grinkevich D.L. (Dmitrij Grinkevich)	22	109	188	2015-09-19 12:34:48		5092459
89	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5106763
90	Frolov (dr.shtopor)	80	14	141	2015-09-08 10:04:55		5108449
91	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		5120058
92	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5123629
93	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5126960
94	Maslyaev V.S. (Velmont)	89	11	140	2015-07-27 05:27:50		5170646
95	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5171913
96	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5180475
97	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5190205
98	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5198832
99	Skorohod I. (Dracul4ik)	77	15	256	2015-01-28 15:03:11		5429270
100	Skorohod I. (Dracul4ik)	77	15	252	2015-01-27 11:56:41		5430897

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