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SQL exercises

October 09, 02:22 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: 13889

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Safronov P.A. (Paulus73)	124	4	142	2026-10-08 11:19:23	2026-10-08 22:44:52	685
2	Sarkis'yan G. (gennadi_s)	14	187	208	2026-10-08 15:07:00		675
3	Safronov P.A. (Paulus73)	124	4	139	2026-10-08 10:01:07	2026-10-08 11:01:43	61
4	Safronov P.A. (Paulus73)	124	4	138	2026-10-06 09:41:15	2026-10-07 02:54:18	1033
5	Filippkin D.V. (_dimon_)	2	262	240	2026-10-05 14:13:38	2026-10-06 15:58:40	1545
6	Safronov P.A. (Paulus73)	124	4	53	2026-10-05 09:54:21	2026-10-05 12:48:36	174
7	Vinogradova S.M. (Tigra1)	125	4	140	2026-10-04 15:59:22	2026-10-05 11:25:11	1166
8	Vinogradova S.M. (Tigra1)	125	4	139	2026-10-03 08:58:36	2026-10-03 17:36:51	518
9	Filippkin D.V. (_dimon_)	2	262	53	2026-10-02 10:34:22	2026-10-02 13:34:56	181
10	Kostomarov A.V. (al29)	5	247	53	2026-09-30 08:53:59		12568
11	Vinogradova S.M. (Tigra1)	125	4	53	2026-09-27 16:28:34	2026-09-27 18:57:12	149
12	Sigankov V.I. (vasilyvanc)	33	74	53	2026-09-23 14:18:31	2026-09-27 11:56:35	5618
13	Sarkis'yan G. (gennadi_s)	14	187	303	2026-09-26 14:18:02	2026-09-26 14:40:37	23
14	Koptel'tsev V. (selber)	19	133	183	2026-09-07 08:11:06		45731
15	Komarov A.N. (Shveda Saulya)	35	68	165	2026-08-28 13:41:52		59800
16	Koptel'tsev V. (selber)	19	133	188	2026-08-21 06:33:00		70309
17	Williams B. (BW)	36	67	252	2026-07-31 13:33:49		100128
18	Williams B. (BW)	36	67	264	2026-07-29 13:21:27		103021
19	Sigankov V.I. (vasilyvanc)	33	74	216	2026-07-23 12:13:08		111729
20	Sigankov V.I. (vasilyvanc)	33	74	241	2026-07-21 14:05:13		114497
21	Zajtsev V.S. (Sleeping)	22	118	241	2026-06-16 18:38:55		164623
22	Chernov D.V. (Kursist)	3	262	241	2026-05-23 20:49:50		199052
23	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		232717
24	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		242945
25	Vyazovetskov A.S. (alex_v)	6	245	264	2026-04-22 19:15:17		243787
26	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		274499
27	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		367726
28	Lukov D.R. (Gendalf)	247	0	32	2025-12-05 01:36:21		443566
29	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		655269
30	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		889392
31	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		901581
32	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		1049434
33	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		1050742
34	Frolov K.A. (Murderface_)	136	0	138	2024-09-23 14:49:59		1073492
35	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1183031
36	Slavutinskij V.V. (Vasilko)	456	0	5	2024-04-22 17:26:35		1295096
37	Slavutinskij V.V. (Vasilko)	456	0	7	2024-04-22 17:26:21		1295096
38	Williams B. (BW)	36	67	141	2024-04-02 11:30:28		1324252
39	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1350773
40	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1364404
41	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1430447
42	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1433761
43	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1436150
44	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1468815
45	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1521078
46	Rudikov E. (cubie)	137	0	138	2023-10-31 17:27:54		1545654
47	Shkarednyj I.N. (Gosha)	37	66	198	2023-03-25 21:10:27		1862232
48	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1966221
49	Koptel'tsev V. (selber)	19	133	237	2022-11-06 21:16:51		2062385
50	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		2101594
51	Lukov D.R. (Gendalf)	247	0	90	2022-07-21 11:18:50		2218503
52	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2365085
53	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2616841
54	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2745193
55	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2879547
56	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2921734
57	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2925481
58	Kozharinov A. (bubala)	213	0	10	2020-09-30 09:55:07		3167547
59	Samarin A. (not.yet.sql.master)	148	0	112	2020-08-14 15:12:10		3234910
60	Koptel'tsev V. (selber)	19	133	259	2020-06-24 00:22:07		3309240
61	Samarin A. (not.yet.sql.master)	148	0	138	2020-05-09 21:48:04		3374194
62	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3382165
63	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3421679
64	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3445407
65	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3755796
66	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3783078
67	Romanov K.Yu. (kostik)	313	0	12	2019-07-25 08:42:10		3791140
68	Kordyum A. (alko58)	231	0	12	2019-07-12 15:58:52		3809423
69	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3853502
70	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3993477
71	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		4091745
72	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		4094926
73	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4237117
74	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4297664
75	Voevutskij S.A. (SergLK)	219	0	45	2018-07-01 13:19:14		4351023
76	Zyrin V.E. (Vezyr)	553	0	29	2018-05-29 14:14:19		4398488
77	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4490555
78	Shkarednyj I.N. (Gosha)	37	66	151	2018-03-23 22:38:32		4494464
79	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4494542
80	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4517172
81	Shkarednyj I.N. (Gosha)	37	66	147	2018-02-26 08:13:30		4531329
82	F (uff)	65	25	95	2018-01-22 15:57:03		4581265
83	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4632934
84	Kordyum A. (alko58)	231	0	101	2017-11-21 18:18:43		4670404
85	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4672165
86	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4673233
87	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4710948
88	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4738065
89	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4771128
90	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4847773
91	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4894317
92	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4898466
93	F (uff)	65	25	185	2017-06-01 10:27:49		4919994
94	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4959867
95	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		5021758
96	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5256662
97	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5292135
98	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5371358
99	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5501694
100	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5543793

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