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SQL exercises

April 15, 02:54 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: 15116

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Koptel'tsev V. (selber)	21	110	167	2025-04-12 13:06:32		3708
2	Sarkis'yan G. (gennadi_s)	31	77	164	2025-04-11 16:03:00		4971
3	Sarkis'yan G. (gennadi_s)	31	77	163	2025-03-30 14:14:08	2025-04-09 18:01:54	14628
4	Williams B. (BW)	34	66	303	2025-04-08 16:47:17		9247
5	Williams B. (BW)	34	66	306	2025-04-08 15:18:15	2025-04-08 16:42:28	84
6	Koptel'tsev V. (selber)	21	110	176	2025-03-31 19:58:00	2025-04-02 00:39:02	1721
7	Fomichev A.V. (Fomichev)	194	0	7	2025-02-25 02:16:37		70598
8	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		78696
9	Chuvstvin M. (chuvstvinmaxim)	87	11	141	2025-01-29 11:09:56		108944
10	Chuvstvin M. (chuvstvinmaxim)	87	11	258	2025-01-21 00:01:28		121133
11	Lyubomudrov R.G. (born2tilt)	70	22	162	2024-10-10 07:48:40		268986
12	Lyubomudrov R.G. (born2tilt)	70	22	202	2024-10-09 10:00:37		270294
13	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		293044
14	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		320485
15	Zajtsev V.S. (Sleeping)	20	112	164	2024-07-09 13:11:22		402583
16	Slavutinskij V.V. (Vasilko)	444	0	5	2024-04-22 17:26:35		514648
17	Slavutinskij V.V. (Vasilko)	444	0	7	2024-04-22 17:26:21		514648
18	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		543804
19	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		570325
20	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		583957
21	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		649999
22	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		653313
23	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		655702
24	Nikolaenko A.V. (Shadow77)	82	14	135	2023-12-24 02:07:10		688367
25	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		733543
26	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		740630
27	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		765207
28	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1010238
29	Zajtsev V.S. (Sleeping)	20	112	150	2023-04-18 11:40:16		1047794
30	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1081784
31	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1185773
32	Koptel'tsev V. (selber)	21	110	237	2022-11-06 21:16:51		1281938
33	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1321146
34	Lukov D.R. (Gendalf)	238	0	90	2022-07-21 11:18:50		1438056
35	Pavlov A.V. (Anton)	59	29	141	2022-04-10 16:17:39		1584637
36	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1698686
37	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		1836393
38	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		1964745
39	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2099099
40	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2141286
41	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2145033
42	Kozharinov A. (bubala)	204	0	10	2020-09-30 09:55:07		2387099
43	Samarin A. (not.yet.sql.master)	139	0	112	2020-08-14 15:12:10		2454462
44	Koptel'tsev V. (selber)	21	110	259	2020-06-24 00:22:07		2528792
45	Samarin A. (not.yet.sql.master)	139	0	138	2020-05-09 21:48:04		2593746
46	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2601717
47	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2641232
48	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2664959
49	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		2975348
50	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3002630
51	Romanov K.Yu. (kostik)	304	0	12	2019-07-25 08:42:10		3010692
52	Kordyum A. (alko58)	221	0	12	2019-07-12 15:58:52		3028976
53	Pavlov A.V. (Anton)	59	29	168	2019-06-12 01:20:21		3073054
54	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3213029
55	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3311297
56	Grishunin M.F. (MikhailFG)	91	10	144	2018-12-26 09:36:27		3314478
57	Shindin A.V. (AlShin)	24	99	45	2018-09-18 15:45:28		3456669
58	Skorohod I. (Dracul4ik)	77	15	45	2018-08-07 14:38:23		3517216
59	Voevutskij S.A. (SergLK)	209	0	45	2018-07-01 13:19:14		3570575
60	Zyrin V.E. (Vezyr)	536	0	29	2018-05-29 14:14:19		3618040
61	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3710107
62	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3714016
63	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3714095
64	Azbel' E.G. (enull)	76	15	148	2018-03-08 04:10:21		3736724
65	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		3750881
66	F (uff)	64	25	95	2018-01-22 15:57:03		3800817
67	Aliev R. (y4nzi)	26	95	259	2017-12-17 18:48:39		3852486
68	Kordyum A. (alko58)	221	0	101	2017-11-21 18:18:43		3889956
69	Zajtsev V.S. (Sleeping)	20	112	190	2017-11-20 12:57:31		3891717
70	Aliev R. (y4nzi)	26	95	257	2017-11-19 19:09:17		3892785
71	Aliev R. (y4nzi)	26	95	255	2017-10-24 14:34:21		3930500
72	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		3957617
73	Skorohod I. (Dracul4ik)	77	15	156	2017-09-12 19:34:33		3990680
74	Grinkevich D.L. (Dmitrij Grinkevich)	22	109	115	2017-07-21 14:09:37		4067325
75	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4113870
76	Vorob'ev E.V. (Johnnymnemonic)	157	0	138	2017-06-16 09:15:49		4118019
77	F (uff)	64	25	185	2017-06-01 10:27:49		4139547
78	Skorohod I. (Dracul4ik)	77	15	146	2017-05-04 17:54:53		4179420
79	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4241311
80	Skorohod I. (Dracul4ik)	77	15	144	2016-10-10 15:20:14		4476214
81	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4511687
82	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4590910
83	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4721246
84	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		4763345
85	Sivoglazov M.A. (Gaizenberg)	65	24	127	2015-11-28 14:08:52		4932766
86	Maslyaev V.S. (Velmont)	89	11	170	2015-11-06 14:01:20		4964453
87	Sivoglazov M.A. (Gaizenberg)	65	24	261	2015-10-13 23:22:26		4998452
88	Fomichev A.V. (Fomichev)	194	0	101	2015-10-07 11:21:04		5007813
89	Grinkevich D.L. (Dmitrij Grinkevich)	22	109	188	2015-09-19 12:34:48		5033660
90	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5047964
91	Frolov (dr.shtopor)	80	14	141	2015-09-08 10:04:55		5049649
92	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		5061259
93	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5064830
94	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5068161
95	Maslyaev V.S. (Velmont)	89	11	140	2015-07-27 05:27:50		5111847
96	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5113114
97	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5121675
98	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5131405
99	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5140032
100	Skorohod I. (Dracul4ik)	77	15	256	2015-01-28 15:03:11		5370471

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