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SQL exercises

October 14, 19:22 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: 15192

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	20	119	182	2025-10-13 15:25:57		1677
2	Sarkis'yan G. (gennadi_s)	20	119	181	2025-09-06 14:04:35	2025-10-06 15:31:50	43287
3	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		137890
4	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		259610
5	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		333666
6	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		341765
7	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		372013
8	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		384201
9	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		532054
10	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		533362
11	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		556113
12	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		583553
13	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		665651
14	Slavutinskij V.V. (Vasilko)	447	0	5	2024-04-22 17:26:35		777716
15	Slavutinskij V.V. (Vasilko)	447	0	7	2024-04-22 17:26:21		777716
16	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		806872
17	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		833393
18	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		847025
19	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		913067
20	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		916381
21	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		918771
22	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		951435
23	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		996611
24	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1003698
25	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1028275
26	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1273307
27	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1310862
28	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1344852
29	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1448841
30	Koptel'tsev V. (selber)	21	116	237	2022-11-06 21:16:51		1545006
31	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1584214
32	Lukov D.R. (Gendalf)	240	0	90	2022-07-21 11:18:50		1701124
33	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1847705
34	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1961755
35	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2099462
36	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2227814
37	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2362168
38	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2404354
39	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2408101
40	Kozharinov A. (bubala)	207	0	10	2020-09-30 09:55:07		2650168
41	Samarin A. (not.yet.sql.master)	141	0	112	2020-08-14 15:12:10		2717530
42	Koptel'tsev V. (selber)	21	116	259	2020-06-24 00:22:07		2791861
43	Samarin A. (not.yet.sql.master)	141	0	138	2020-05-09 21:48:04		2856815
44	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2864785
45	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2904300
46	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2928027
47	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3238416
48	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3265698
49	Romanov K.Yu. (kostik)	306	0	12	2019-07-25 08:42:10		3273760
50	Kordyum A. (alko58)	224	0	12	2019-07-12 15:58:52		3292044
51	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3336122
52	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3476097
53	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3574365
54	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3577546
55	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3719737
56	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3780284
57	Voevutskij S.A. (SergLK)	212	0	45	2018-07-01 13:19:14		3833643
58	Zyrin V.E. (Vezyr)	538	0	29	2018-05-29 14:14:19		3881108
59	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3973175
60	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3977084
61	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3977163
62	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		3999792
63	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		4013949
64	F (uff)	65	25	95	2018-01-22 15:57:03		4063886
65	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4115554
66	Kordyum A. (alko58)	224	0	101	2017-11-21 18:18:43		4153024
67	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4154785
68	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4155853
69	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4193568
70	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4220685
71	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4253748
72	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4330393
73	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4376938
74	Vorob'ev E.V. (Johnnymnemonic)	159	0	138	2017-06-16 09:15:49		4381087
75	F (uff)	65	25	185	2017-06-01 10:27:49		4402615
76	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4442488
77	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4504379
78	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4739282
79	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4774755
80	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4853979
81	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4984314
82	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5026413
83	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5195834
84	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5227521
85	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5261520
86	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5270882
87	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5296728
88	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5311032
89	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5312718
90	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		5324327
91	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5327898
92	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5331229
93	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5374915
94	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5376182
95	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5384744
96	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5394474
97	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5403101
98	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5633539
99	Skorohod I. (Dracul4ik)	78	15	252	2015-01-27 11:56:41		5635166
100	Sysoev A.V. (Sysa)	49	39	143	2014-12-25 01:16:19		5683326

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