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SQL exercises

July 02, 23:18 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: 15126

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Varenikov D.M. (Dmitriy Varenikov)	20	129	251	2026-06-28 23:28:11	2026-06-29 16:31:13	1023
2	Williams B. (BW)	35	66	262	2025-04-17 12:32:37	2026-06-24 13:25:33	623573
3	Williams B. (BW)	35	66	24	2026-05-15 13:25:32	2026-06-22 22:34:12	55269
4	Zajtsev V.S. (Sleeping)	22	118	241	2026-06-16 18:38:55		23320
5	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		57749
6	Koptel'tsev V. (selber)	19	129	241	2026-05-23 20:23:43		57775
7	Komarov A.N. (Shveda Saulya)	37	65	160	2026-05-09 13:24:21		78354
8	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		91413
9	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		101641
10	Vyazovetskov A.S. (alex_v)	7	241	264	2026-04-22 19:15:17		102483
11	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		133195
12	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		226422
13	Lukov D.R. (Gendalf)	245	0	32	2025-12-05 01:36:21		302262
14	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		513966
15	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		717841
16	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		748089
17	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		760277
18	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		908130
19	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		909438
20	Frolov K.A. (Murderface_)	134	0	138	2024-09-23 14:49:59		932189
21	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1041727
22	Slavutinskij V.V. (Vasilko)	455	0	5	2024-04-22 17:26:35		1153792
23	Slavutinskij V.V. (Vasilko)	455	0	7	2024-04-22 17:26:21		1153792
24	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1182948
25	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1209469
26	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1223101
27	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1289143
28	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1292457
29	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1294847
30	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1327511
31	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1379774
32	Rudikov E. (cubie)	136	0	138	2023-10-31 17:27:54		1404351
33	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1720928
34	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1824917
35	Koptel'tsev V. (selber)	19	129	237	2022-11-06 21:16:51		1921082
36	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		1960290
37	Lukov D.R. (Gendalf)	245	0	90	2022-07-21 11:18:50		2077200
38	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2223781
39	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2475538
40	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2603890
41	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2738244
42	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2780430
43	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2784177
44	Kozharinov A. (bubala)	212	0	10	2020-09-30 09:55:07		3026244
45	Samarin A. (not.yet.sql.master)	147	0	112	2020-08-14 15:12:10		3093606
46	Koptel'tsev V. (selber)	19	129	259	2020-06-24 00:22:07		3167937
47	Samarin A. (not.yet.sql.master)	147	0	138	2020-05-09 21:48:04		3232891
48	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3240861
49	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3280376
50	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3304103
51	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3614492
52	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3641774
53	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3649836
54	Kordyum A. (alko58)	230	0	12	2019-07-12 15:58:52		3668120
55	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3712198
56	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3852173
57	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		3950441
58	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		3953622
59	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4095813
60	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4156360
61	Voevutskij S.A. (SergLK)	218	0	45	2018-07-01 13:19:14		4209719
62	Zyrin V.E. (Vezyr)	550	0	29	2018-05-29 14:14:19		4257184
63	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4349251
64	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4353160
65	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4353239
66	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4375868
67	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4390025
68	F (uff)	65	25	95	2018-01-22 15:57:03		4439962
69	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4491630
70	Kordyum A. (alko58)	230	0	101	2017-11-21 18:18:43		4529100
71	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4530861
72	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4531929
73	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4569644
74	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4596761
75	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4629824
76	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4706469
77	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4753014
78	Vorob'ev E.V. (Johnnymnemonic)	163	0	138	2017-06-16 09:15:49		4757163
79	F (uff)	65	25	185	2017-06-01 10:27:49		4778691
80	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4818564
81	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4880455
82	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5115358
83	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5150831
84	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5230055
85	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5360390
86	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5402489
87	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5571910
88	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5603597
89	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5637596
90	Fomichev A.V. (Fomichev)	199	0	101	2015-10-07 11:21:04		5646958
91	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5672804
92	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5687108
93	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5688794
94	Varenikov D.M. (Dmitriy Varenikov)	20	129	263	2015-08-31 08:35:37		5700403
95	Chebykin D. (GriGrim)	39	62	263	2015-08-28 21:04:30		5703974
96	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5707305
97	Maslyaev V.S. (Velmont)	91	11	140	2015-07-27 05:27:50		5750991
98	Khromulyak O.M. (ChOleg)	121	5	150	2015-07-26 08:20:51		5752258
99	Chebykin D. (GriGrim)	39	62	216	2015-07-20 09:39:02		5760820
100	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5770550

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