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SQL exercises

January 21, 04:57 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: 15345

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Petrov Y. (YuriPetrov)	32	78	198	2026-01-17 16:11:10	2026-01-20 01:16:01	3425
2	Sarkis'yan G. (gennadi_s)	16	142	191	2026-01-19 15:25:23		2252
3	Sarkis'yan G. (gennadi_s)	16	142	190	2026-01-11 13:55:22	2026-01-12 11:21:39	1286
4	Lukov D.R. (Gendalf)	242	0	32	2025-12-05 01:36:21		67881
5	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		279585
6	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		401305
7	Fomichev A.V. (Fomichev)	198	0	7	2025-02-25 02:16:37		475361
8	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		483460
9	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		513708
10	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		525896
11	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		673749
12	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		675057
13	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		697808
14	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		725248
15	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		807346
16	Slavutinskij V.V. (Vasilko)	449	0	5	2024-04-22 17:26:35		919411
17	Slavutinskij V.V. (Vasilko)	449	0	7	2024-04-22 17:26:21		919411
18	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		948567
19	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		975088
20	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		988720
21	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1054762
22	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1058076
23	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1060466
24	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1093130
25	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		1138306
26	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1145393
27	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1169970
28	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1415002
29	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1452557
30	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1486547
31	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1590536
32	Koptel'tsev V. (selber)	21	119	237	2022-11-06 21:16:51		1686701
33	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1725909
34	Lukov D.R. (Gendalf)	242	0	90	2022-07-21 11:18:50		1842819
35	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1989400
36	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2241157
37	Fedevych V.I. (labuch_fedev)	37	65	221	2021-07-20 17:09:05		2369509
38	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2503863
39	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2546049
40	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2549796
41	Kozharinov A. (bubala)	208	0	10	2020-09-30 09:55:07		2791863
42	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		2859225
43	Koptel'tsev V. (selber)	21	119	259	2020-06-24 00:22:07		2933556
44	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		2998510
45	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		3006480
46	Fedevych V.I. (labuch_fedev)	37	65	226	2020-04-06 22:22:48		3045995
47	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3069722
48	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3380111
49	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3407393
50	Romanov K.Yu. (kostik)	308	0	12	2019-07-25 08:42:10		3415455
51	Kordyum A. (alko58)	225	0	12	2019-07-12 15:58:52		3433739
52	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3477817
53	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3617792
54	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3716060
55	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3719241
56	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3861432
57	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3921979
58	Voevutskij S.A. (SergLK)	214	0	45	2018-07-01 13:19:14		3975338
59	Zyrin V.E. (Vezyr)	541	0	29	2018-05-29 14:14:19		4022803
60	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		4114870
61	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4118779
62	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4118858
63	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4141487
64	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4155644
65	F (uff)	65	25	95	2018-01-22 15:57:03		4205581
66	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4257249
67	Kordyum A. (alko58)	225	0	101	2017-11-21 18:18:43		4294719
68	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4296480
69	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4297548
70	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4335263
71	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4362380
72	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4395443
73	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4472088
74	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4518633
75	Vorob'ev E.V. (Johnnymnemonic)	161	0	138	2017-06-16 09:15:49		4522782
76	F (uff)	65	25	185	2017-06-01 10:27:49		4544310
77	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4584183
78	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4646074
79	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4880977
80	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4916450
81	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4995674
82	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5126009
83	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5168108
84	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5337529
85	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5369216
86	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5403215
87	Fomichev A.V. (Fomichev)	198	0	101	2015-10-07 11:21:04		5412577
88	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5438423
89	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5452727
90	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5454413
91	Varenikov D.M. (Dmitriy Varenikov)	19	128	263	2015-08-31 08:35:37		5466022
92	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5469593
93	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5472924
94	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5516610
95	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5517877
96	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5526439
97	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5536169
98	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5544796
99	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5775234
100	Skorohod I. (Dracul4ik)	78	15	252	2015-01-27 11:56:41		5776861

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