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SQL exercises

April 22, 07:35 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: 15070

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Vyazovetskov A.S. (alex_v)	12	200	32	2026-04-21 17:47:32	2026-04-21 19:26:54	99
2	Vyazovetskov A.S. (alex_v)	12	200	24	2026-04-21 16:48:14	2026-04-21 17:12:28	24
3	Polyakov V.M. (rock_4)	88	11	166	2026-04-21 17:12:16		864
4	Vyazovetskov A.S. (alex_v)	12	200	12	2026-04-21 14:41:05	2026-04-21 16:33:50	113
5	Vyazovetskov A.S. (alex_v)	12	200	7	2026-04-21 14:25:50	2026-04-21 14:38:59	13
6	Vyazovetskov A.S. (alex_v)	12	200	5	2026-04-21 11:28:24	2026-04-21 12:37:50	69
7	Polyakov V.M. (rock_4)	88	11	162	2026-04-16 13:25:02	2026-04-21 12:35:51	7151
8	Sarkis'yan G. (gennadi_s)	15	162	198	2026-04-13 14:57:51	2026-04-19 13:46:18	8568
9	Sigankov V.I. (vasilyvanc)	33	74	24	2026-04-16 17:02:10	2026-04-16 17:20:47	19
10	Polyakov V.M. (rock_4)	88	11	152	2026-04-16 13:35:42		8280
11	Polyakov V.M. (rock_4)	88	11	146	2026-04-06 15:53:06	2026-04-15 17:22:34	13049
12	Polyakov V.M. (rock_4)	88	11	24	2026-04-14 15:22:40	2026-04-14 16:03:02	40
13	Kostomarov A.V. (al29)	5	247	24	2026-04-13 13:11:46	2026-04-13 14:15:15	63
14	Kuritsyn V.N. (ValNick)	139	0	24	2026-04-11 22:13:57	2026-04-11 22:41:38	28
15	Komarov A.N. (Shveda Saulya)	38	62	159	2026-04-10 16:59:02		16717
16	Sarkis'yan G. (gennadi_s)	15	162	197	2026-04-10 12:16:57	2026-04-10 15:25:18	188
17	Polyakov V.M. (rock_4)	88	11	148	2026-04-01 11:23:28		30012
18	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		123240
19	Lukov D.R. (Gendalf)	245	0	32	2025-12-05 01:36:21		199079
20	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		410783
21	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		532503
22	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		614658
23	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		644906
24	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		657094
25	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		804947
26	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		806255
27	Frolov K.A. (Murderface_)	134	0	138	2024-09-23 14:49:59		829006
28	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		938544
29	Slavutinskij V.V. (Vasilko)	454	0	5	2024-04-22 17:26:35		1050609
30	Slavutinskij V.V. (Vasilko)	454	0	7	2024-04-22 17:26:21		1050609
31	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1079765
32	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1106286
33	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		1119918
34	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1185960
35	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1189274
36	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1191664
37	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1224329
38	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1276591
39	Rudikov E. (cubie)	135	0	138	2023-10-31 17:27:54		1301168
40	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1617745
41	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1721734
42	Koptel'tsev V. (selber)	20	122	237	2022-11-06 21:16:51		1817899
43	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		1857107
44	Lukov D.R. (Gendalf)	245	0	90	2022-07-21 11:18:50		1974017
45	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2120598
46	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2372355
47	Fedevych V.I. (labuch_fedev)	37	65	221	2021-07-20 17:09:05		2500707
48	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2635061
49	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2677247
50	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2680995
51	Kozharinov A. (bubala)	211	0	10	2020-09-30 09:55:07		2923061
52	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		2990424
53	Koptel'tsev V. (selber)	20	122	259	2020-06-24 00:22:07		3064754
54	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		3129708
55	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		3137678
56	Fedevych V.I. (labuch_fedev)	37	65	226	2020-04-06 22:22:48		3177193
57	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3200920
58	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3511310
59	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3538592
60	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3546654
61	Kordyum A. (alko58)	229	0	12	2019-07-12 15:58:52		3564937
62	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3609015
63	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3748991
64	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3847258
65	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		3850439
66	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3992630
67	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		4053177
68	Voevutskij S.A. (SergLK)	217	0	45	2018-07-01 13:19:14		4106537
69	Zyrin V.E. (Vezyr)	547	0	29	2018-05-29 14:14:19		4154001
70	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4246068
71	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4249977
72	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4250056
73	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4272685
74	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4286842
75	F (uff)	65	25	95	2018-01-22 15:57:03		4336779
76	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4388447
77	Kordyum A. (alko58)	229	0	101	2017-11-21 18:18:43		4425917
78	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4427678
79	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4428747
80	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4466461
81	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4493578
82	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4526641
83	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4603286
84	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4649831
85	Vorob'ev E.V. (Johnnymnemonic)	162	0	138	2017-06-16 09:15:49		4653980
86	F (uff)	65	25	185	2017-06-01 10:27:49		4675508
87	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4715381
88	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4777272
89	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		5012176
90	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		5047648
91	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		5126872
92	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5257207
93	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5299306
94	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5468727
95	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5500414
96	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5534413
97	Fomichev A.V. (Fomichev)	199	0	101	2015-10-07 11:21:04		5543775
98	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5569621
99	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5583925
100	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5585611

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