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SQL exercises

October 13, 22:55 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: 15189

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		449
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		136662
4	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		258383
5	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		332439
6	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		340537
7	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		370785
8	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		382974
9	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		530827
10	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		532135
11	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		554885
12	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		582325
13	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		664424
14	Slavutinskij V.V. (Vasilko)	447	0	5	2024-04-22 17:26:35		776489
15	Slavutinskij V.V. (Vasilko)	447	0	7	2024-04-22 17:26:21		776489
16	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		805645
17	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		832166
18	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		845797
19	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		911840
20	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		915154
21	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		917543
22	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		950208
23	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		995384
24	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1002471
25	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1027047
26	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1272079
27	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1309635
28	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1343625
29	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1447614
30	Koptel'tsev V. (selber)	21	116	237	2022-11-06 21:16:51		1543778
31	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1582987
32	Lukov D.R. (Gendalf)	240	0	90	2022-07-21 11:18:50		1699896
33	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1846478
34	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1960527
35	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2098234
36	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2226586
37	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2360940
38	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2403127
39	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2406874
40	Kozharinov A. (bubala)	207	0	10	2020-09-30 09:55:07		2648940
41	Samarin A. (not.yet.sql.master)	141	0	112	2020-08-14 15:12:10		2716303
42	Koptel'tsev V. (selber)	21	116	259	2020-06-24 00:22:07		2790633
43	Samarin A. (not.yet.sql.master)	141	0	138	2020-05-09 21:48:04		2855587
44	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2863558
45	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2903072
46	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2926800
47	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3237189
48	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3264471
49	Romanov K.Yu. (kostik)	306	0	12	2019-07-25 08:42:10		3272533
50	Kordyum A. (alko58)	224	0	12	2019-07-12 15:58:52		3290816
51	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3334895
52	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3474870
53	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3573138
54	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3576319
55	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3718510
56	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3779057
57	Voevutskij S.A. (SergLK)	212	0	45	2018-07-01 13:19:14		3832416
58	Zyrin V.E. (Vezyr)	538	0	29	2018-05-29 14:14:19		3879881
59	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3971948
60	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3975857
61	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3975935
62	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		3998565
63	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		4012722
64	F (uff)	65	25	95	2018-01-22 15:57:03		4062658
65	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4114327
66	Kordyum A. (alko58)	224	0	101	2017-11-21 18:18:43		4151797
67	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4153558
68	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4154626
69	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4192341
70	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4219458
71	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4252521
72	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4329166
73	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4375710
74	Vorob'ev E.V. (Johnnymnemonic)	159	0	138	2017-06-16 09:15:49		4379859
75	F (uff)	65	25	185	2017-06-01 10:27:49		4401387
76	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4441260
77	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4503151
78	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4738055
79	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4773528
80	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4852751
81	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4983087
82	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5025186
83	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5194606
84	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5226294
85	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5260293
86	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5269654
87	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5295500
88	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5309804
89	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5311490
90	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		5323100
91	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5326671
92	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5330002
93	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5373687
94	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5374954
95	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5383516
96	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5393246
97	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5401873
98	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5632312
99	Skorohod I. (Dracul4ik)	78	15	252	2015-01-27 11:56:41		5633939
100	Sysoev A.V. (Sysa)	49	39	143	2014-12-25 01:16:19		5682099

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