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SQL exercises

May 08, 17:20 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: 15103

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Vyazovetskov A.S. (alex_v)	11	216	217	2026-05-08 10:20:20	2026-05-08 13:08:42	168
2	Vyazovetskov A.S. (alex_v)	11	216	232	2026-05-07 10:40:43	2026-05-07 16:36:28	356
3	Sarkis'yan G. (gennadi_s)	15	170	201	2026-05-06 17:02:11	2026-05-06 21:59:40	297
4	Vyazovetskov A.S. (alex_v)	11	216	160	2026-05-06 10:59:16	2026-05-06 17:58:52	420
5	Vyazovetskov A.S. (alex_v)	11	216	233	2026-05-05 16:32:39	2026-05-05 21:01:23	269
6	Koptel'tsev V. (selber)	19	129	147	2026-04-27 19:09:38	2026-05-05 18:01:02	11451
7	Varenikov D.M. (Dmitriy Varenikov)	20	128	24	2026-05-03 22:31:13	2026-05-03 22:51:54	21
8	Karasyova N.V. (vlksm)	9	225	24	2026-05-01 17:08:12	2026-05-01 17:42:21	34
9	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		11855
10	Sarkis'yan G. (gennadi_s)	15	170	200	2026-04-27 16:55:45	2026-04-29 19:00:00	3004
11	Polyakov V.M. (rock_4)	76	15	152	2026-04-16 13:35:42	2026-04-29 17:07:29	18932
12	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		22083
13	Vyazovetskov A.S. (alex_v)	11	216	264	2026-04-22 19:15:17		22925
14	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		53637
15	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		146864
16	Lukov D.R. (Gendalf)	246	0	32	2025-12-05 01:36:21		222704
17	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		434407
18	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		556128
19	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		638282
20	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		668530
21	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		680719
22	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		828572
23	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		829880
24	Frolov K.A. (Murderface_)	134	0	138	2024-09-23 14:49:59		852630
25	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		962169
26	Slavutinskij V.V. (Vasilko)	455	0	5	2024-04-22 17:26:35		1074234
27	Slavutinskij V.V. (Vasilko)	455	0	7	2024-04-22 17:26:21		1074234
28	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1103390
29	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1129911
30	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		1143543
31	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1209585
32	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1212899
33	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1215288
34	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1247953
35	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1300216
36	Rudikov E. (cubie)	135	0	138	2023-10-31 17:27:54		1324793
37	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1641370
38	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1745359
39	Koptel'tsev V. (selber)	19	129	237	2022-11-06 21:16:51		1841524
40	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		1880732
41	Lukov D.R. (Gendalf)	246	0	90	2022-07-21 11:18:50		1997642
42	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2144223
43	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2395979
44	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2524331
45	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2658685
46	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2700872
47	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2704619
48	Kozharinov A. (bubala)	212	0	10	2020-09-30 09:55:07		2946685
49	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		3014048
50	Koptel'tsev V. (selber)	19	129	259	2020-06-24 00:22:07		3088378
51	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		3153332
52	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		3161303
53	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3200818
54	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3224545
55	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3534934
56	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3562216
57	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3570278
58	Kordyum A. (alko58)	230	0	12	2019-07-12 15:58:52		3588562
59	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3632640
60	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3772615
61	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		3870883
62	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		3874064
63	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4016255
64	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4076802
65	Voevutskij S.A. (SergLK)	218	0	45	2018-07-01 13:19:14		4130161
66	Zyrin V.E. (Vezyr)	549	0	29	2018-05-29 14:14:19		4177626
67	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4269693
68	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4273602
69	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4273681
70	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4296310
71	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4310467
72	F (uff)	65	25	95	2018-01-22 15:57:03		4360403
73	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4412072
74	Kordyum A. (alko58)	230	0	101	2017-11-21 18:18:43		4449542
75	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4451303
76	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4452371
77	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4490086
78	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4517203
79	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4550266
80	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4626911
81	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4673456
82	Vorob'ev E.V. (Johnnymnemonic)	162	0	138	2017-06-16 09:15:49		4677605
83	F (uff)	65	25	185	2017-06-01 10:27:49		4699133
84	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4739006
85	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4800897
86	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5035800
87	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		5071273
88	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		5150496
89	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5280832
90	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5322931
91	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5492352
92	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5524039
93	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5558038
94	Fomichev A.V. (Fomichev)	199	0	101	2015-10-07 11:21:04		5567399
95	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5593246
96	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5607550
97	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5609235
98	Varenikov D.M. (Dmitriy Varenikov)	20	128	263	2015-08-31 08:35:37		5620845
99	Chebykin D. (GriGrim)	39	62	263	2015-08-28 21:04:30		5624416
100	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5627747

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