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SQL exercises

October 15, 13:00 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: 13896

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Safronov P.A. (Paulus73)	117	6	140	2026-10-09 09:42:14	2026-10-15 12:25:59	8804
2	Vinogradova S.M. (Tigra1)	125	4	141	2026-10-10 17:01:15		6960
3	Sarkis'yan G. (gennadi_s)	14	188	208	2026-10-08 15:07:00	2026-10-10 12:57:58	2751
4	Safronov P.A. (Paulus73)	117	6	142	2026-10-08 11:19:23	2026-10-08 22:44:52	685
5	Safronov P.A. (Paulus73)	117	6	139	2026-10-08 10:01:07	2026-10-08 11:01:43	61
6	Safronov P.A. (Paulus73)	117	6	138	2026-10-06 09:41:15	2026-10-07 02:54:18	1033
7	Filippkin D.V. (_dimon_)	2	260	240	2026-10-05 14:13:38	2026-10-06 15:58:40	1545
8	Safronov P.A. (Paulus73)	117	6	53	2026-10-05 09:54:21	2026-10-05 12:48:36	174
9	Vinogradova S.M. (Tigra1)	125	4	140	2026-10-04 15:59:22	2026-10-05 11:25:11	1166
10	Vinogradova S.M. (Tigra1)	125	4	139	2026-10-03 08:58:36	2026-10-03 17:36:51	518
11	Filippkin D.V. (_dimon_)	2	260	53	2026-10-02 10:34:22	2026-10-02 13:34:56	181
12	Kostomarov A.V. (al29)	5	245	53	2026-09-30 08:53:59		21847
13	Koptel'tsev V. (selber)	18	133	183	2026-09-07 08:11:06		55010
14	Komarov A.N. (Shveda Saulya)	35	68	165	2026-08-28 13:41:52		69079
15	Koptel'tsev V. (selber)	18	133	188	2026-08-21 06:33:00		79588
16	Williams B. (BW)	36	65	252	2026-07-31 13:33:49		109407
17	Williams B. (BW)	36	65	264	2026-07-29 13:21:27		112299
18	Sigankov V.I. (vasilyvanc)	33	72	216	2026-07-23 12:13:08		121008
19	Sigankov V.I. (vasilyvanc)	33	72	241	2026-07-21 14:05:13		123776
20	Zajtsev V.S. (Sleeping)	22	116	241	2026-06-16 18:38:55		173902
21	Chernov D.V. (Kursist)	3	260	241	2026-05-23 20:49:50		208331
22	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		241996
23	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		252224
24	Vyazovetskov A.S. (alex_v)	6	243	264	2026-04-22 19:15:17		253066
25	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		283777
26	Petrov Y. (YuriPetrov)	32	76	210	2026-01-26 17:36:12		377005
27	Lukov D.R. (Gendalf)	247	0	32	2025-12-05 01:36:21		452845
28	Chebykin D. (GriGrim)	39	60	210	2025-07-11 01:12:59		664548
29	Chuvstvin M. (chuvstvinmaxim)	92	9	141	2025-01-29 11:09:56		898671
30	Chuvstvin M. (chuvstvinmaxim)	92	9	258	2025-01-21 00:01:28		910859
31	Lyubomudrov R.G. (born2tilt)	73	20	162	2024-10-10 07:48:40		1058712
32	Lyubomudrov R.G. (born2tilt)	73	20	202	2024-10-09 10:00:37		1060020
33	Frolov K.A. (Murderface_)	136	0	138	2024-09-23 14:49:59		1082771
34	Zajtsev V.S. (Sleeping)	22	116	164	2024-07-09 13:11:22		1192310
35	Slavutinskij V.V. (Vasilko)	456	0	5	2024-04-22 17:26:35		1304374
36	Slavutinskij V.V. (Vasilko)	456	0	7	2024-04-22 17:26:21		1304375
37	Williams B. (BW)	36	65	141	2024-04-02 11:30:28		1333530
38	Kukushkin S.A. (smog)	16	151	194	2024-03-15 01:29:39		1360051
39	Latyntsev N.G. (aks_nsk)	54	35	253	2024-03-05 14:17:51		1373683
40	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1439725
41	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1443039
42	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1445429
43	Nikolaenko A.V. (Shadow77)	82	14	135	2023-12-24 02:07:10		1478094
44	Boiko D. (Angellore)	9	231	262	2023-11-17 19:04:36		1530356
45	Rudikov E. (cubie)	137	0	138	2023-10-31 17:27:54		1554933
46	Shkarednyj I.N. (Gosha)	37	64	198	2023-03-25 21:10:27		1871510
47	Latyntsev N.G. (aks_nsk)	54	35	255	2023-01-12 16:01:39		1975499
48	Koptel'tsev V. (selber)	18	133	237	2022-11-06 21:16:51		2071664
49	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		2110873
50	Lukov D.R. (Gendalf)	247	0	90	2022-07-21 11:18:50		2227782
51	Pavlov A.V. (Anton)	59	29	141	2022-04-10 16:17:39		2374363
52	Sigankov V.I. (vasilyvanc)	33	72	161	2021-10-17 20:21:01		2626120
53	Fedevych V.I. (labuch_fedev)	38	63	221	2021-07-20 17:09:05		2754472
54	Pusev D.V. (Pusev_Denis)	19	132	234	2021-04-18 09:55:08		2888826
55	Kukushkin S.A. (smog)	16	151	12	2021-03-20 02:48:36		2931012
56	Pusev D.V. (Pusev_Denis)	19	132	159	2021-03-17 12:21:10		2934760
57	Kozharinov A. (bubala)	213	0	10	2020-09-30 09:55:07		3176826
58	Samarin A. (not.yet.sql.master)	148	0	112	2020-08-14 15:12:10		3244189
59	Koptel'tsev V. (selber)	18	133	259	2020-06-24 00:22:07		3318519
60	Samarin A. (not.yet.sql.master)	148	0	138	2020-05-09 21:48:04		3383473
61	Karasyova N.V. (vlksm)	10	223	230	2020-05-04 08:57:25		3391443
62	Fedevych V.I. (labuch_fedev)	38	63	226	2020-04-06 22:22:48		3430958
63	Pusev D.V. (Pusev_Denis)	19	132	184	2020-03-21 10:55:32		3454685
64	Fokin A. (Vizitor )	44	50	263	2019-08-18 21:46:14		3765075
65	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3792357
66	Romanov K.Yu. (kostik)	313	0	12	2019-07-25 08:42:10		3800419
67	Kordyum A. (alko58)	232	0	12	2019-07-12 15:58:52		3818702
68	Pavlov A.V. (Anton)	59	29	168	2019-06-12 01:20:21		3862781
69	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		4002756
70	Kurochkin P.A. (qwrqwr)	12	209	227	2018-12-28 14:37:25		4101023
71	Grishunin M.F. (MikhailFG)	90	10	144	2018-12-26 09:36:27		4104204
72	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4246395
73	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4306943
74	Voevutskij S.A. (SergLK)	219	0	45	2018-07-01 13:19:14		4360302
75	Zyrin V.E. (Vezyr)	553	0	29	2018-05-29 14:14:19		4407767
76	Chebykin D. (GriGrim)	39	60	228	2018-03-26 15:47:45		4499833
77	Shkarednyj I.N. (Gosha)	37	64	151	2018-03-23 22:38:32		4503742
78	Boiko D. (Angellore)	9	231	229	2018-03-23 21:19:51		4503821
79	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4526451
80	Shkarednyj I.N. (Gosha)	37	64	147	2018-02-26 08:13:30		4540607
81	F (uff)	66	23	95	2018-01-22 15:57:03		4590544
82	Aliev R. (y4nzi)	27	93	259	2017-12-17 18:48:39		4642212
83	Kordyum A. (alko58)	232	0	101	2017-11-21 18:18:43		4679682
84	Zajtsev V.S. (Sleeping)	22	116	190	2017-11-20 12:57:31		4681443
85	Aliev R. (y4nzi)	27	93	257	2017-11-19 19:09:17		4682512
86	Aliev R. (y4nzi)	27	93	255	2017-10-24 14:34:21		4720227
87	Kukushkin S.A. (smog)	16	151	171	2017-10-05 18:37:27		4747343
88	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4780406
89	Grinkevich D.L. (Dmitrij Grinkevich)	23	107	115	2017-07-21 14:09:37		4857051
90	Bezhaev A.Yu. (Baser)	8	234	220	2017-06-19 06:24:54		4903596
91	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4907745
92	F (uff)	66	23	185	2017-06-01 10:27:49		4929273
93	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4969146
94	Movlyanov A.P. (Oct)	13	191	218	2017-03-22 18:23:50		5031037
95	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5265941
96	Sysoev A.V. (Sysa)	53	37	165	2016-09-16 00:07:24		5301413
97	Sysoev A.V. (Sysa)	53	37	168	2016-07-22 23:44:07		5380637
98	Karasyova N.V. (vlksm)	10	223	263	2016-04-23 11:28:43		5510972
99	Titovskij P.S. (kli3ma)	46	45	164	2016-03-25 05:49:30		5553071
100	Sivoglazov M.A. (Gaizenberg)	70	22	127	2015-11-28 14:08:52		5722492

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