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SQL exercises

July 21, 16:28 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: 15140

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sigankov V.I. (vasilyvanc)	33	74	241	2026-07-21 14:05:13		143
2	Sarkis'yan G. (gennadi_s)	15	175	202	2026-07-19 14:34:28	2026-07-20 18:03:08	1649
3	Krasovskij E.A. (pegoopik)	1	265	242	2026-07-18 10:53:25	2026-07-18 19:12:40	499
4	Sarkis'yan G. (gennadi_s)	15	175	242	2026-07-18 13:38:46	2026-07-18 13:39:00	0
5	Timofeeva E.V. (Umrikhina)	26	96	24	2026-07-15 10:55:13	2026-07-15 11:24:36	29
6	Safronov P.A. (Paulus73)	134	0	137	2026-07-13 10:19:08	2026-07-14 00:12:15	833
7	Koptel'tsev V. (selber)	19	130	198	2026-07-12 02:54:38		13774
8	Safronov P.A. (Paulus73)	134	0	136	2026-07-10 10:15:27	2026-07-10 15:00:38	285
9	Safronov P.A. (Paulus73)	134	0	135	2026-07-09 10:47:01	2026-07-10 00:27:56	821
10	Safronov P.A. (Paulus73)	134	0	134	2026-07-08 10:21:00	2026-07-08 15:48:42	328
11	Zajtsev V.S. (Sleeping)	22	118	241	2026-06-16 18:38:55		50269
12	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		84699
13	Komarov A.N. (Shveda Saulya)	37	65	160	2026-05-09 13:24:21		105304
14	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		118363
15	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		128591
16	Vyazovetskov A.S. (alex_v)	7	241	264	2026-04-22 19:15:17		129433
17	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		160145
18	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		253372
19	Lukov D.R. (Gendalf)	247	0	32	2025-12-05 01:36:21		329212
20	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		540915
21	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		744790
22	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		775038
23	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		787227
24	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		935080
25	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		936388
26	Frolov K.A. (Murderface_)	135	0	138	2024-09-23 14:49:59		959138
27	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1068677
28	Slavutinskij V.V. (Vasilko)	455	0	5	2024-04-22 17:26:35		1180742
29	Slavutinskij V.V. (Vasilko)	455	0	7	2024-04-22 17:26:21		1180742
30	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1209898
31	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1236419
32	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1250050
33	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1316093
34	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1319407
35	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1321796
36	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1354461
37	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1406724
38	Rudikov E. (cubie)	136	0	138	2023-10-31 17:27:54		1431300
39	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1747878
40	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1851867
41	Koptel'tsev V. (selber)	19	130	237	2022-11-06 21:16:51		1948031
42	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		1987240
43	Lukov D.R. (Gendalf)	247	0	90	2022-07-21 11:18:50		2104150
44	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2250731
45	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2502487
46	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2630839
47	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2765193
48	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2807380
49	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2811127
50	Kozharinov A. (bubala)	213	0	10	2020-09-30 09:55:07		3053193
51	Samarin A. (not.yet.sql.master)	147	0	112	2020-08-14 15:12:10		3120556
52	Koptel'tsev V. (selber)	19	130	259	2020-06-24 00:22:07		3194886
53	Samarin A. (not.yet.sql.master)	147	0	138	2020-05-09 21:48:04		3259840
54	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3267811
55	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3307326
56	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3331053
57	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3641442
58	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3668724
59	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3676786
60	Kordyum A. (alko58)	231	0	12	2019-07-12 15:58:52		3695069
61	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3739148
62	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3879123
63	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		3977391
64	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		3980572
65	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4122763
66	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4183310
67	Voevutskij S.A. (SergLK)	219	0	45	2018-07-01 13:19:14		4236669
68	Zyrin V.E. (Vezyr)	552	0	29	2018-05-29 14:14:19		4284134
69	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4376201
70	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4380110
71	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4380188
72	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4402818
73	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4416975
74	F (uff)	65	25	95	2018-01-22 15:57:03		4466911
75	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4518580
76	Kordyum A. (alko58)	231	0	101	2017-11-21 18:18:43		4556050
77	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4557811
78	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4558879
79	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4596594
80	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4623711
81	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4656774
82	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4733419
83	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4779963
84	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4784113
85	F (uff)	65	25	185	2017-06-01 10:27:49		4805641
86	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4845513
87	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4907405
88	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5142308
89	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5177781
90	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5257004
91	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5387340
92	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5429439
93	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5598859
94	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5630547
95	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5664546
96	Fomichev A.V. (Fomichev)	200	0	101	2015-10-07 11:21:04		5673907
97	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5699754
98	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5714057
99	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5715743
100	Varenikov D.M. (Dmitriy Varenikov)	20	129	263	2015-08-31 08:35:37		5727353

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