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SQL exercises

June 28, 13:45 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: 15114

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Williams B. (BW)	35	66	262	2025-04-17 12:32:37	2026-06-24 13:25:33	623573
2	Williams B. (BW)	35	66	24	2026-05-15 13:25:32	2026-06-22 22:34:12	55269
3	Zajtsev V.S. (Sleeping)	22	118	241	2026-06-16 18:38:55		16987
4	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		51416
5	Koptel'tsev V. (selber)	19	129	241	2026-05-23 20:23:43		51442
6	Komarov A.N. (Shveda Saulya)	37	65	160	2026-05-09 13:24:21		72021
7	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		85081
8	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		95309
9	Vyazovetskov A.S. (alex_v)	7	241	264	2026-04-22 19:15:17		96150
10	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		126862
11	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		220090
12	Lukov D.R. (Gendalf)	245	0	32	2025-12-05 01:36:21		295929
13	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		507633
14	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		711508
15	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		741756
16	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		753944
17	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		901797
18	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		903105
19	Frolov K.A. (Murderface_)	134	0	138	2024-09-23 14:49:59		925856
20	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1035394
21	Slavutinskij V.V. (Vasilko)	455	0	5	2024-04-22 17:26:35		1147459
22	Slavutinskij V.V. (Vasilko)	455	0	7	2024-04-22 17:26:21		1147459
23	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1176615
24	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1203136
25	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1216768
26	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1282810
27	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1286124
28	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1288514
29	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1321179
30	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1373441
31	Rudikov E. (cubie)	135	0	138	2023-10-31 17:27:54		1398018
32	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1714595
33	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1818584
34	Koptel'tsev V. (selber)	19	129	237	2022-11-06 21:16:51		1914749
35	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		1953957
36	Lukov D.R. (Gendalf)	245	0	90	2022-07-21 11:18:50		2070867
37	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2217448
38	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2469205
39	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2597557
40	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2731911
41	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2774097
42	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2777845
43	Kozharinov A. (bubala)	212	0	10	2020-09-30 09:55:07		3019911
44	Samarin A. (not.yet.sql.master)	146	0	112	2020-08-14 15:12:10		3087274
45	Koptel'tsev V. (selber)	19	129	259	2020-06-24 00:22:07		3161604
46	Samarin A. (not.yet.sql.master)	146	0	138	2020-05-09 21:48:04		3226558
47	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3234528
48	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3274043
49	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3297770
50	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3608160
51	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3635442
52	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3643504
53	Kordyum A. (alko58)	230	0	12	2019-07-12 15:58:52		3661787
54	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3705865
55	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3845840
56	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		3944108
57	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		3947289
58	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4089480
59	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4150027
60	Voevutskij S.A. (SergLK)	218	0	45	2018-07-01 13:19:14		4203387
61	Zyrin V.E. (Vezyr)	550	0	29	2018-05-29 14:14:19		4250851
62	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4342918
63	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4346827
64	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4346906
65	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4369535
66	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4383692
67	F (uff)	65	25	95	2018-01-22 15:57:03		4433629
68	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4485297
69	Kordyum A. (alko58)	230	0	101	2017-11-21 18:18:43		4522767
70	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4524528
71	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4525596
72	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4563311
73	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4590428
74	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4623491
75	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4700136
76	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4746681
77	Vorob'ev E.V. (Johnnymnemonic)	163	0	138	2017-06-16 09:15:49		4750830
78	F (uff)	65	25	185	2017-06-01 10:27:49		4772358
79	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4812231
80	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4874122
81	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5109026
82	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5144498
83	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5223722
84	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5354057
85	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5396156
86	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5565577
87	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5597264
88	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5631263
89	Fomichev A.V. (Fomichev)	199	0	101	2015-10-07 11:21:04		5640625
90	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5666471
91	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5680775
92	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5682461
93	Varenikov D.M. (Dmitriy Varenikov)	20	129	263	2015-08-31 08:35:37		5694070
94	Chebykin D. (GriGrim)	39	62	263	2015-08-28 21:04:30		5697641
95	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5700972
96	Maslyaev V.S. (Velmont)	91	11	140	2015-07-27 05:27:50		5744658
97	Khromulyak O.M. (ChOleg)	121	5	150	2015-07-26 08:20:51		5745925
98	Chebykin D. (GriGrim)	39	62	216	2015-07-20 09:39:02		5754487
99	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5764217
100	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5772844

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