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SQL exercises

October 10, 01:13 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: 13883

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		931
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		2047
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		13940
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	Koptel'tsev V. (selber)	18	133	183	2026-09-07 08:11:06		47102
15	Komarov A.N. (Shveda Saulya)	35	68	165	2026-08-28 13:41:52		61172
16	Koptel'tsev V. (selber)	18	133	188	2026-08-21 06:33:00		71681
17	Williams B. (BW)	36	65	252	2026-07-31 13:33:49		101500
18	Williams B. (BW)	36	65	264	2026-07-29 13:21:27		104392
19	Sigankov V.I. (vasilyvanc)	33	72	216	2026-07-23 12:13:08		113100
20	Sigankov V.I. (vasilyvanc)	33	72	241	2026-07-21 14:05:13		115868
21	Zajtsev V.S. (Sleeping)	22	116	241	2026-06-16 18:38:55		165995
22	Chernov D.V. (Kursist)	3	260	241	2026-05-23 20:49:50		200424
23	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		234088
24	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		244316
25	Vyazovetskov A.S. (alex_v)	6	243	264	2026-04-22 19:15:17		245158
26	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		275870
27	Petrov Y. (YuriPetrov)	32	76	210	2026-01-26 17:36:12		369097
28	Lukov D.R. (Gendalf)	247	0	32	2025-12-05 01:36:21		444937
29	Chebykin D. (GriGrim)	39	60	210	2025-07-11 01:12:59		656641
30	Chuvstvin M. (chuvstvinmaxim)	92	9	141	2025-01-29 11:09:56		890764
31	Chuvstvin M. (chuvstvinmaxim)	92	9	258	2025-01-21 00:01:28		902952
32	Lyubomudrov R.G. (born2tilt)	73	20	162	2024-10-10 07:48:40		1050805
33	Lyubomudrov R.G. (born2tilt)	73	20	202	2024-10-09 10:00:37		1052113
34	Frolov K.A. (Murderface_)	136	0	138	2024-09-23 14:49:59		1074864
35	Zajtsev V.S. (Sleeping)	22	116	164	2024-07-09 13:11:22		1184402
36	Slavutinskij V.V. (Vasilko)	456	0	5	2024-04-22 17:26:35		1296467
37	Slavutinskij V.V. (Vasilko)	456	0	7	2024-04-22 17:26:21		1296467
38	Williams B. (BW)	36	65	141	2024-04-02 11:30:28		1325623
39	Kukushkin S.A. (smog)	16	151	194	2024-03-15 01:29:39		1352144
40	Latyntsev N.G. (aks_nsk)	54	35	253	2024-03-05 14:17:51		1365776
41	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1431818
42	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1435132
43	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1437521
44	Nikolaenko A.V. (Shadow77)	82	14	135	2023-12-24 02:07:10		1470186
45	Boiko D. (Angellore)	9	231	262	2023-11-17 19:04:36		1522449
46	Rudikov E. (cubie)	137	0	138	2023-10-31 17:27:54		1547026
47	Shkarednyj I.N. (Gosha)	37	64	198	2023-03-25 21:10:27		1863603
48	Latyntsev N.G. (aks_nsk)	54	35	255	2023-01-12 16:01:39		1967592
49	Koptel'tsev V. (selber)	18	133	237	2022-11-06 21:16:51		2063757
50	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		2102965
51	Lukov D.R. (Gendalf)	247	0	90	2022-07-21 11:18:50		2219875
52	Pavlov A.V. (Anton)	59	29	141	2022-04-10 16:17:39		2366456
53	Sigankov V.I. (vasilyvanc)	33	72	161	2021-10-17 20:21:01		2618212
54	Fedevych V.I. (labuch_fedev)	38	63	221	2021-07-20 17:09:05		2746564
55	Pusev D.V. (Pusev_Denis)	19	132	234	2021-04-18 09:55:08		2880918
56	Kukushkin S.A. (smog)	16	151	12	2021-03-20 02:48:36		2923105
57	Pusev D.V. (Pusev_Denis)	19	132	159	2021-03-17 12:21:10		2926852
58	Kozharinov A. (bubala)	213	0	10	2020-09-30 09:55:07		3168918
59	Samarin A. (not.yet.sql.master)	148	0	112	2020-08-14 15:12:10		3236281
60	Koptel'tsev V. (selber)	18	133	259	2020-06-24 00:22:07		3310611
61	Samarin A. (not.yet.sql.master)	148	0	138	2020-05-09 21:48:04		3375565
62	Karasyova N.V. (vlksm)	10	223	230	2020-05-04 08:57:25		3383536
63	Fedevych V.I. (labuch_fedev)	38	63	226	2020-04-06 22:22:48		3423051
64	Pusev D.V. (Pusev_Denis)	19	132	184	2020-03-21 10:55:32		3446778
65	Fokin A. (Vizitor )	44	50	263	2019-08-18 21:46:14		3757167
66	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3784449
67	Romanov K.Yu. (kostik)	313	0	12	2019-07-25 08:42:10		3792511
68	Kordyum A. (alko58)	231	0	12	2019-07-12 15:58:52		3810795
69	Pavlov A.V. (Anton)	59	29	168	2019-06-12 01:20:21		3854873
70	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3994848
71	Kurochkin P.A. (qwrqwr)	12	209	227	2018-12-28 14:37:25		4093116
72	Grishunin M.F. (MikhailFG)	90	10	144	2018-12-26 09:36:27		4096297
73	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4238488
74	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4299035
75	Voevutskij S.A. (SergLK)	219	0	45	2018-07-01 13:19:14		4352394
76	Zyrin V.E. (Vezyr)	553	0	29	2018-05-29 14:14:19		4399859
77	Chebykin D. (GriGrim)	39	60	228	2018-03-26 15:47:45		4491926
78	Shkarednyj I.N. (Gosha)	37	64	151	2018-03-23 22:38:32		4495835
79	Boiko D. (Angellore)	9	231	229	2018-03-23 21:19:51		4495914
80	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4518543
81	Shkarednyj I.N. (Gosha)	37	64	147	2018-02-26 08:13:30		4532700
82	F (uff)	66	23	95	2018-01-22 15:57:03		4582636
83	Aliev R. (y4nzi)	27	93	259	2017-12-17 18:48:39		4634305
84	Kordyum A. (alko58)	231	0	101	2017-11-21 18:18:43		4671775
85	Zajtsev V.S. (Sleeping)	22	116	190	2017-11-20 12:57:31		4673536
86	Aliev R. (y4nzi)	27	93	257	2017-11-19 19:09:17		4674604
87	Aliev R. (y4nzi)	27	93	255	2017-10-24 14:34:21		4712319
88	Kukushkin S.A. (smog)	16	151	171	2017-10-05 18:37:27		4739436
89	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4772499
90	Grinkevich D.L. (Dmitrij Grinkevich)	23	107	115	2017-07-21 14:09:37		4849144
91	Bezhaev A.Yu. (Baser)	8	234	220	2017-06-19 06:24:54		4895689
92	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4899838
93	F (uff)	66	23	185	2017-06-01 10:27:49		4921366
94	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4961239
95	Movlyanov A.P. (Oct)	13	191	218	2017-03-22 18:23:50		5023130
96	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5258033
97	Sysoev A.V. (Sysa)	53	37	165	2016-09-16 00:07:24		5293506
98	Sysoev A.V. (Sysa)	53	37	168	2016-07-22 23:44:07		5372729
99	Karasyova N.V. (vlksm)	10	223	263	2016-04-23 11:28:43		5503065
100	Titovskij P.S. (kli3ma)	46	45	164	2016-03-25 05:49:30		5545164

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