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SQL exercises

March 26, 01:42 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: 15047

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	32	72	161	2025-02-16 16:50:58	2025-03-23 18:16:22	50485
2	Suprun D. (TimonSP)	75	15	32	2025-03-22 18:19:38	2025-03-22 18:45:45	26
3	Suprun D. (TimonSP)	75	15	5	2025-03-22 17:42:48	2025-03-22 18:14:33	32
4	Makarov I.A. (_Bkmz_)	93	9	131	2025-03-22 12:30:59	2025-03-22 14:27:35	117
5	Makarov I.A. (_Bkmz_)	93	9	130	2025-03-22 09:14:30	2025-03-22 12:07:04	173
6	Krasovskij E.A. (pegoopik)	1	259	237	2025-03-20 14:35:57	2025-03-20 18:32:29	237
7	Krasovskij E.A. (pegoopik)	1	259	234	2025-03-12 19:48:30	2025-03-13 00:22:46	274
8	Koptel'tsev V. (selber)	23	103	217	2025-02-26 20:10:00		39212
9	Fomichev A.V. (Fomichev)	191	0	7	2025-02-25 02:16:37		41726
10	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		49824
11	Chuvstvin M. (chuvstvinmaxim)	87	11	141	2025-01-29 11:09:56		80073
12	Chuvstvin M. (chuvstvinmaxim)	87	11	258	2025-01-21 00:01:28		92261
13	Lyubomudrov R.G. (born2tilt)	70	22	162	2024-10-10 07:48:40		240114
14	Lyubomudrov R.G. (born2tilt)	70	22	202	2024-10-09 10:00:37		241422
15	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		264173
16	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		291613
17	Zajtsev V.S. (Sleeping)	20	112	164	2024-07-09 13:11:22		373711
18	Slavutinskij V.V. (Vasilko)	437	0	5	2024-04-22 17:26:35		485776
19	Slavutinskij V.V. (Vasilko)	437	0	7	2024-04-22 17:26:21		485776
20	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		514932
21	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		541453
22	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		555085
23	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		621127
24	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		624441
25	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		626830
26	Nikolaenko A.V. (Shadow77)	82	14	135	2023-12-24 02:07:10		659495
27	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		704671
28	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		711758
29	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		736335
30	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		981366
31	Zajtsev V.S. (Sleeping)	20	112	150	2023-04-18 11:40:16		1018922
32	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1052912
33	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1156901
34	Koptel'tsev V. (selber)	23	103	237	2022-11-06 21:16:51		1253066
35	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1292274
36	Lukov D.R. (Gendalf)	238	0	90	2022-07-21 11:18:50		1409184
37	Pavlov A.V. (Anton)	59	29	141	2022-04-10 16:17:39		1555765
38	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1669814
39	Sigankov V.I. (vasilyvanc)	31	74	161	2021-10-17 20:21:01		1807521
40	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		1935873
41	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2070227
42	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2112414
43	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2116161
44	Kozharinov A. (bubala)	202	0	10	2020-09-30 09:55:07		2358227
45	Samarin A. (not.yet.sql.master)	139	0	112	2020-08-14 15:12:10		2425590
46	Koptel'tsev V. (selber)	23	103	259	2020-06-24 00:22:07		2499920
47	Samarin A. (not.yet.sql.master)	139	0	138	2020-05-09 21:48:04		2564874
48	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2572845
49	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2612360
50	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2636087
51	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		2946476
52	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		2973758
53	Romanov K.Yu. (kostik)	300	0	12	2019-07-25 08:42:10		2981820
54	Kordyum A. (alko58)	219	0	12	2019-07-12 15:58:52		3000104
55	Pavlov A.V. (Anton)	59	29	168	2019-06-12 01:20:21		3044182
56	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3184157
57	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3282425
58	Grishunin M.F. (MikhailFG)	91	10	144	2018-12-26 09:36:27		3285606
59	Shindin A.V. (AlShin)	24	99	45	2018-09-18 15:45:28		3427797
60	Skorohod I. (Dracul4ik)	77	15	45	2018-08-07 14:38:23		3488344
61	Voevutskij S.A. (SergLK)	206	0	45	2018-07-01 13:19:14		3541703
62	Zyrin V.E. (Vezyr)	530	0	29	2018-05-29 14:14:19		3589168
63	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3681235
64	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3685144
65	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3685223
66	Azbel' E.G. (enull)	76	15	148	2018-03-08 04:10:21		3707852
67	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		3722009
68	F (uff)	64	25	95	2018-01-22 15:57:03		3771945
69	Aliev R. (y4nzi)	26	95	259	2017-12-17 18:48:39		3823614
70	Kordyum A. (alko58)	219	0	101	2017-11-21 18:18:43		3861084
71	Zajtsev V.S. (Sleeping)	20	112	190	2017-11-20 12:57:31		3862845
72	Aliev R. (y4nzi)	26	95	257	2017-11-19 19:09:17		3863913
73	Aliev R. (y4nzi)	26	95	255	2017-10-24 14:34:21		3901628
74	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		3928745
75	Skorohod I. (Dracul4ik)	77	15	156	2017-09-12 19:34:33		3961808
76	Grinkevich D.L. (Dmitrij Grinkevich)	21	109	115	2017-07-21 14:09:37		4038453
77	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4084998
78	Vorob'ev E.V. (Johnnymnemonic)	154	0	138	2017-06-16 09:15:49		4089147
79	F (uff)	64	25	185	2017-06-01 10:27:49		4110675
80	Skorohod I. (Dracul4ik)	77	15	146	2017-05-04 17:54:53		4150548
81	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4212439
82	Skorohod I. (Dracul4ik)	77	15	144	2016-10-10 15:20:14		4447342
83	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4482815
84	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4562038
85	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4692374
86	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		4734473
87	Sivoglazov M.A. (Gaizenberg)	65	24	127	2015-11-28 14:08:52		4903894
88	Maslyaev V.S. (Velmont)	89	11	170	2015-11-06 14:01:20		4935581
89	Sivoglazov M.A. (Gaizenberg)	65	24	261	2015-10-13 23:22:26		4969580
90	Fomichev A.V. (Fomichev)	191	0	101	2015-10-07 11:21:04		4978941
91	Grinkevich D.L. (Dmitrij Grinkevich)	21	109	188	2015-09-19 12:34:48		5004788
92	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5019092
93	Frolov (dr.shtopor)	80	14	141	2015-09-08 10:04:55		5020778
94	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		5032387
95	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5035958
96	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5039289
97	Maslyaev V.S. (Velmont)	89	11	140	2015-07-27 05:27:50		5082975
98	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5084242
99	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5092803
100	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5102534

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