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SQL exercises

July 16, 02:21 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: 15144

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Timofeeva E.V. (Umrikhina)	26	96	24	2026-07-15 10:55:13	2026-07-15 11:24:36	29
2	Safronov P.A. (Paulus73)	134	0	137	2026-07-13 10:19:08	2026-07-14 00:12:15	833
3	Koptel'tsev V. (selber)	19	130	198	2026-07-12 02:54:38		5727
4	Safronov P.A. (Paulus73)	134	0	136	2026-07-10 10:15:27	2026-07-10 15:00:38	285
5	Safronov P.A. (Paulus73)	134	0	135	2026-07-09 10:47:01	2026-07-10 00:27:56	821
6	Safronov P.A. (Paulus73)	134	0	134	2026-07-08 10:21:00	2026-07-08 15:48:42	328
7	Safronov P.A. (Paulus73)	134	0	133	2026-07-07 10:28:03	2026-07-07 11:59:53	92
8	Koptel'tsev V. (selber)	19	130	241	2026-05-23 20:23:43	2026-07-07 07:38:38	64035
9	Safronov P.A. (Paulus73)	134	0	132	2026-07-06 11:09:01	2026-07-06 18:52:03	463
10	Safronov P.A. (Paulus73)	134	0	131	2026-07-03 10:10:01	2026-07-03 11:05:45	56
11	Zajtsev V.S. (Sleeping)	22	118	241	2026-06-16 18:38:55		42223
12	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		76652
13	Komarov A.N. (Shveda Saulya)	37	65	160	2026-05-09 13:24:21		97258
14	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		110317
15	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		120545
16	Vyazovetskov A.S. (alex_v)	7	241	264	2026-04-22 19:15:17		121387
17	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		152098
18	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		245326
19	Lukov D.R. (Gendalf)	246	0	32	2025-12-05 01:36:21		321166
20	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		532869
21	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		736744
22	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		766992
23	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		779180
24	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		927033
25	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		928341
26	Frolov K.A. (Murderface_)	135	0	138	2024-09-23 14:49:59		951092
27	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1060631
28	Slavutinskij V.V. (Vasilko)	455	0	5	2024-04-22 17:26:35		1172695
29	Slavutinskij V.V. (Vasilko)	455	0	7	2024-04-22 17:26:21		1172696
30	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1201851
31	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1228372
32	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1242004
33	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1308046
34	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1311360
35	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1313750
36	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1346415
37	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1398677
38	Rudikov E. (cubie)	136	0	138	2023-10-31 17:27:54		1423254
39	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1739831
40	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1843820
41	Koptel'tsev V. (selber)	19	130	237	2022-11-06 21:16:51		1939985
42	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		1979194
43	Lukov D.R. (Gendalf)	246	0	90	2022-07-21 11:18:50		2096103
44	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2242684
45	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2494441
46	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2622793
47	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2757147
48	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2799333
49	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2803081
50	Kozharinov A. (bubala)	213	0	10	2020-09-30 09:55:07		3045147
51	Samarin A. (not.yet.sql.master)	147	0	112	2020-08-14 15:12:10		3112510
52	Koptel'tsev V. (selber)	19	130	259	2020-06-24 00:22:07		3186840
53	Samarin A. (not.yet.sql.master)	147	0	138	2020-05-09 21:48:04		3251794
54	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3259764
55	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3299279
56	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3323006
57	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3633396
58	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3660678
59	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3668740
60	Kordyum A. (alko58)	231	0	12	2019-07-12 15:58:52		3687023
61	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3731102
62	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3871077
63	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		3969344
64	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		3972525
65	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4114716
66	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4175264
67	Voevutskij S.A. (SergLK)	219	0	45	2018-07-01 13:19:14		4228623
68	Zyrin V.E. (Vezyr)	552	0	29	2018-05-29 14:14:19		4276088
69	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4368154
70	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4372063
71	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4372142
72	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4394772
73	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4408928
74	F (uff)	65	25	95	2018-01-22 15:57:03		4458865
75	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4510533
76	Kordyum A. (alko58)	231	0	101	2017-11-21 18:18:43		4548003
77	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4549764
78	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4550833
79	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4588548
80	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4615664
81	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4648727
82	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4725372
83	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4771917
84	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4776066
85	F (uff)	65	25	185	2017-06-01 10:27:49		4797594
86	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4837467
87	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4899358
88	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5134262
89	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5169735
90	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5248958
91	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5379293
92	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5421392
93	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5590813
94	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5622501
95	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5656499
96	Fomichev A.V. (Fomichev)	200	0	101	2015-10-07 11:21:04		5665861
97	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5691707
98	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5706011
99	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5707697
100	Varenikov D.M. (Dmitriy Varenikov)	20	129	263	2015-08-31 08:35:37		5719306

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