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SQL exercises

February 22, 00:13 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: 15372

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Koptel'tsev V. (selber)	21	119	179	2026-02-21 19:34:16		279
2	Polyakov V.M. (rock_4)	134	0	138	2026-02-20 17:03:21		1870
3	Polyakov V.M. (rock_4)	134	0	137	2026-02-13 11:01:59	2026-02-20 16:48:54	10427
4	Komarov A.N. (Shveda Saulya)	41	59	157	2024-09-04 13:29:47	2026-02-19 14:50:22	767601
5	Polyakov V.M. (rock_4)	134	0	135	2026-02-09 12:37:00	2026-02-13 10:46:31	5650
6	Komarov A.N. (Shveda Saulya)	41	59	150	2023-11-22 17:11:28	2026-02-13 01:49:19	1171238
7	Sarkis'yan G. (gennadi_s)	16	149	194	2026-02-10 15:42:58		16350
8	Polyakov V.M. (rock_4)	134	0	134	2026-01-29 14:49:41	2026-02-09 11:35:19	15646
9	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		37837
10	Lukov D.R. (Gendalf)	244	0	32	2025-12-05 01:36:21		113677
11	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		325380
12	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		447100
13	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		529255
14	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		559503
15	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		571692
16	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		719544
17	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		720852
18	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		743603
19	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		853142
20	Slavutinskij V.V. (Vasilko)	453	0	5	2024-04-22 17:26:35		965207
21	Slavutinskij V.V. (Vasilko)	453	0	7	2024-04-22 17:26:21		965207
22	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		994363
23	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		1020883
24	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		1034515
25	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1100558
26	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1103871
27	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1106261
28	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1138926
29	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1191188
30	Rudikov E. (cubie)	135	0	138	2023-10-31 17:27:54		1215765
31	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1498353
32	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1532343
33	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1636331
34	Koptel'tsev V. (selber)	21	119	237	2022-11-06 21:16:51		1732496
35	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1771705
36	Lukov D.R. (Gendalf)	244	0	90	2022-07-21 11:18:50		1888614
37	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2035195
38	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2286952
39	Fedevych V.I. (labuch_fedev)	37	65	221	2021-07-20 17:09:05		2415304
40	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2549658
41	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2591844
42	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2595592
43	Kozharinov A. (bubala)	210	0	10	2020-09-30 09:55:07		2837658
44	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		2905021
45	Koptel'tsev V. (selber)	21	119	259	2020-06-24 00:22:07		2979351
46	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		3044305
47	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		3052276
48	Fedevych V.I. (labuch_fedev)	37	65	226	2020-04-06 22:22:48		3091790
49	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3115518
50	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3425907
51	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3453189
52	Romanov K.Yu. (kostik)	309	0	12	2019-07-25 08:42:10		3461251
53	Kordyum A. (alko58)	227	0	12	2019-07-12 15:58:52		3479534
54	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3523613
55	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3663588
56	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3761856
57	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3765037
58	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3907228
59	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3967775
60	Voevutskij S.A. (SergLK)	216	0	45	2018-07-01 13:19:14		4021134
61	Zyrin V.E. (Vezyr)	544	0	29	2018-05-29 14:14:19		4068599
62	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		4160665
63	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4164575
64	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4164653
65	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4187283
66	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4201440
67	F (uff)	65	25	95	2018-01-22 15:57:03		4251376
68	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4303044
69	Kordyum A. (alko58)	227	0	101	2017-11-21 18:18:43		4340514
70	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4342276
71	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4343344
72	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4381059
73	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4408176
74	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4441239
75	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4517883
76	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4564428
77	Vorob'ev E.V. (Johnnymnemonic)	161	0	138	2017-06-16 09:15:49		4568577
78	F (uff)	65	25	185	2017-06-01 10:27:49		4590105
79	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4629978
80	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4691869
81	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4926773
82	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4962246
83	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		5041469
84	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5171804
85	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5213904
86	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5383324
87	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5415012
88	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5449011
89	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5458372
90	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5484218
91	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5498522
92	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5500208
93	Varenikov D.M. (Dmitriy Varenikov)	19	128	263	2015-08-31 08:35:37		5511817
94	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5515389
95	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5518720
96	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5562405
97	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5563672
98	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5572234
99	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5581964
100	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5590591

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