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SQL exercises

October 09, 19:42 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: 13881

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Safronov P.A. (Paulus73)	124	4	140	2026-10-09 09:42:14		600
2	Safronov P.A. (Paulus73)	124	4	142	2026-10-08 11:19:23	2026-10-08 22:44:52	685
3	Sarkis'yan G. (gennadi_s)	14	185	208	2026-10-08 15:07:00		1716
4	Safronov P.A. (Paulus73)	124	4	139	2026-10-08 10:01:07	2026-10-08 11:01:43	61
5	Safronov P.A. (Paulus73)	124	4	138	2026-10-06 09:41:15	2026-10-07 02:54:18	1033
6	Filippkin D.V. (_dimon_)	2	260	240	2026-10-05 14:13:38	2026-10-06 15:58:40	1545
7	Safronov P.A. (Paulus73)	124	4	53	2026-10-05 09:54:21	2026-10-05 12:48:36	174
8	Vinogradova S.M. (Tigra1)	125	4	140	2026-10-04 15:59:22	2026-10-05 11:25:11	1166
9	Vinogradova S.M. (Tigra1)	125	4	139	2026-10-03 08:58:36	2026-10-03 17:36:51	518
10	Filippkin D.V. (_dimon_)	2	260	53	2026-10-02 10:34:22	2026-10-02 13:34:56	181
11	Kostomarov A.V. (al29)	5	245	53	2026-09-30 08:53:59		13609
12	Vinogradova S.M. (Tigra1)	125	4	53	2026-09-27 16:28:34	2026-09-27 18:57:12	149
13	Sigankov V.I. (vasilyvanc)	33	72	53	2026-09-23 14:18:31	2026-09-27 11:56:35	5618
14	Sarkis'yan G. (gennadi_s)	14	185	303	2026-09-26 14:18:02	2026-09-26 14:40:37	23
15	Koptel'tsev V. (selber)	18	133	183	2026-09-07 08:11:06		46771
16	Komarov A.N. (Shveda Saulya)	35	68	165	2026-08-28 13:41:52		60841
17	Koptel'tsev V. (selber)	18	133	188	2026-08-21 06:33:00		71350
18	Williams B. (BW)	36	65	252	2026-07-31 13:33:49		101169
19	Williams B. (BW)	36	65	264	2026-07-29 13:21:27		104061
20	Sigankov V.I. (vasilyvanc)	33	72	216	2026-07-23 12:13:08		112769
21	Sigankov V.I. (vasilyvanc)	33	72	241	2026-07-21 14:05:13		115537
22	Zajtsev V.S. (Sleeping)	22	116	241	2026-06-16 18:38:55		165664
23	Chernov D.V. (Kursist)	3	260	241	2026-05-23 20:49:50		200093
24	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		233757
25	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		243985
26	Vyazovetskov A.S. (alex_v)	6	243	264	2026-04-22 19:15:17		244827
27	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		275539
28	Petrov Y. (YuriPetrov)	32	76	210	2026-01-26 17:36:12		368766
29	Lukov D.R. (Gendalf)	247	0	32	2025-12-05 01:36:21		444606
30	Chebykin D. (GriGrim)	39	60	210	2025-07-11 01:12:59		656310
31	Chuvstvin M. (chuvstvinmaxim)	92	9	141	2025-01-29 11:09:56		890433
32	Chuvstvin M. (chuvstvinmaxim)	92	9	258	2025-01-21 00:01:28		902621
33	Lyubomudrov R.G. (born2tilt)	73	20	162	2024-10-10 07:48:40		1050474
34	Lyubomudrov R.G. (born2tilt)	73	20	202	2024-10-09 10:00:37		1051782
35	Frolov K.A. (Murderface_)	136	0	138	2024-09-23 14:49:59		1074533
36	Zajtsev V.S. (Sleeping)	22	116	164	2024-07-09 13:11:22		1184071
37	Slavutinskij V.V. (Vasilko)	456	0	5	2024-04-22 17:26:35		1296136
38	Slavutinskij V.V. (Vasilko)	456	0	7	2024-04-22 17:26:21		1296136
39	Williams B. (BW)	36	65	141	2024-04-02 11:30:28		1325292
40	Kukushkin S.A. (smog)	16	151	194	2024-03-15 01:29:39		1351813
41	Latyntsev N.G. (aks_nsk)	54	35	253	2024-03-05 14:17:51		1365445
42	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1431487
43	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1434801
44	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1437190
45	Nikolaenko A.V. (Shadow77)	82	14	135	2023-12-24 02:07:10		1469855
46	Boiko D. (Angellore)	9	231	262	2023-11-17 19:04:36		1522118
47	Rudikov E. (cubie)	137	0	138	2023-10-31 17:27:54		1546695
48	Shkarednyj I.N. (Gosha)	37	64	198	2023-03-25 21:10:27		1863272
49	Latyntsev N.G. (aks_nsk)	54	35	255	2023-01-12 16:01:39		1967261
50	Koptel'tsev V. (selber)	18	133	237	2022-11-06 21:16:51		2063426
51	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		2102634
52	Lukov D.R. (Gendalf)	247	0	90	2022-07-21 11:18:50		2219544
53	Pavlov A.V. (Anton)	59	29	141	2022-04-10 16:17:39		2366125
54	Sigankov V.I. (vasilyvanc)	33	72	161	2021-10-17 20:21:01		2617882
55	Fedevych V.I. (labuch_fedev)	38	63	221	2021-07-20 17:09:05		2746233
56	Pusev D.V. (Pusev_Denis)	19	132	234	2021-04-18 09:55:08		2880587
57	Kukushkin S.A. (smog)	16	151	12	2021-03-20 02:48:36		2922774
58	Pusev D.V. (Pusev_Denis)	19	132	159	2021-03-17 12:21:10		2926521
59	Kozharinov A. (bubala)	213	0	10	2020-09-30 09:55:07		3168587
60	Samarin A. (not.yet.sql.master)	148	0	112	2020-08-14 15:12:10		3235950
61	Koptel'tsev V. (selber)	18	133	259	2020-06-24 00:22:07		3310280
62	Samarin A. (not.yet.sql.master)	148	0	138	2020-05-09 21:48:04		3375234
63	Karasyova N.V. (vlksm)	10	223	230	2020-05-04 08:57:25		3383205
64	Fedevych V.I. (labuch_fedev)	38	63	226	2020-04-06 22:22:48		3422720
65	Pusev D.V. (Pusev_Denis)	19	132	184	2020-03-21 10:55:32		3446447
66	Fokin A. (Vizitor )	44	50	263	2019-08-18 21:46:14		3756836
67	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3784118
68	Romanov K.Yu. (kostik)	313	0	12	2019-07-25 08:42:10		3792180
69	Kordyum A. (alko58)	231	0	12	2019-07-12 15:58:52		3810464
70	Pavlov A.V. (Anton)	59	29	168	2019-06-12 01:20:21		3854542
71	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3994517
72	Kurochkin P.A. (qwrqwr)	12	209	227	2018-12-28 14:37:25		4092785
73	Grishunin M.F. (MikhailFG)	90	10	144	2018-12-26 09:36:27		4095966
74	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4238157
75	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4298704
76	Voevutskij S.A. (SergLK)	219	0	45	2018-07-01 13:19:14		4352063
77	Zyrin V.E. (Vezyr)	553	0	29	2018-05-29 14:14:19		4399528
78	Chebykin D. (GriGrim)	39	60	228	2018-03-26 15:47:45		4491595
79	Shkarednyj I.N. (Gosha)	37	64	151	2018-03-23 22:38:32		4495504
80	Boiko D. (Angellore)	9	231	229	2018-03-23 21:19:51		4495583
81	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4518212
82	Shkarednyj I.N. (Gosha)	37	64	147	2018-02-26 08:13:30		4532369
83	F (uff)	66	23	95	2018-01-22 15:57:03		4582305
84	Aliev R. (y4nzi)	27	93	259	2017-12-17 18:48:39		4633974
85	Kordyum A. (alko58)	231	0	101	2017-11-21 18:18:43		4671444
86	Zajtsev V.S. (Sleeping)	22	116	190	2017-11-20 12:57:31		4673205
87	Aliev R. (y4nzi)	27	93	257	2017-11-19 19:09:17		4674273
88	Aliev R. (y4nzi)	27	93	255	2017-10-24 14:34:21		4711988
89	Kukushkin S.A. (smog)	16	151	171	2017-10-05 18:37:27		4739105
90	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4772168
91	Grinkevich D.L. (Dmitrij Grinkevich)	23	107	115	2017-07-21 14:09:37		4848813
92	Bezhaev A.Yu. (Baser)	8	234	220	2017-06-19 06:24:54		4895358
93	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4899507
94	F (uff)	66	23	185	2017-06-01 10:27:49		4921035
95	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4960908
96	Movlyanov A.P. (Oct)	13	191	218	2017-03-22 18:23:50		5022799
97	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5257702
98	Sysoev A.V. (Sysa)	53	37	165	2016-09-16 00:07:24		5293175
99	Sysoev A.V. (Sysa)	53	37	168	2016-07-22 23:44:07		5372398
100	Karasyova N.V. (vlksm)	10	223	263	2016-04-23 11:28:43		5502734

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