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SQL exercises

October 24, 01:52 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: 14808

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	48	39	151	2024-10-22 18:17:29		1895
2	Sarkis'yan G. (gennadi_s)	48	39	150	2024-10-11 11:54:31	2024-10-22 14:28:53	15994
3	Lyubomudrov R.G. (born2tilt)	70	22	162	2024-10-10 07:48:40		19804
4	Lyubomudrov R.G. (born2tilt)	70	22	202	2024-10-09 10:00:37		21112
5	Frolov K.A. (Murderface_)	132	0	138	2024-09-23 14:49:59		43862
6	Komarov A.N. (Shveda Saulya)	44	49	157	2024-09-04 13:29:47		71303
7	Zajtsev V.S. (Sleeping)	20	112	164	2024-07-09 13:11:22		153401
8	Slavutinskij V.V. (Vasilko)	432	0	5	2024-04-22 17:26:35		265466
9	Slavutinskij V.V. (Vasilko)	432	0	7	2024-04-22 17:26:21		265466
10	Williams B. (BW)	33	66	141	2024-04-02 11:30:28		294622
11	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		321143
12	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		334774
13	Kurbanoff N.I. (Nariman Kurbanoff)	98	9	305	2024-01-19 17:35:31		400817
14	Kurbanoff N.I. (Nariman Kurbanoff)	98	9	306	2024-01-17 10:21:39		404131
15	Kurbanoff N.I. (Nariman Kurbanoff)	98	9	71	2024-01-15 18:32:03		406520
16	Nikolaenko A.V. (Shadow77)	82	14	135	2023-12-24 02:07:10		439185
17	Komarov A.N. (Shveda Saulya)	44	49	150	2023-11-22 17:11:28		484361
18	Boiko D. (Angellore)	8	237	262	2023-11-17 19:04:36		491448
19	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		516024
20	Komarov A.N. (Shveda Saulya)	44	49	149	2023-05-14 13:36:07		761056
21	Zajtsev V.S. (Sleeping)	20	112	150	2023-04-18 11:40:16		798612
22	Shkarednyj I.N. (Gosha)	34	66	198	2023-03-25 21:10:27		832602
23	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		936591
24	Koptel'tsev V. (selber)	24	97	237	2022-11-06 21:16:51		1032755
25	Borisenkov D.V. (xuser)	96	9	173	2022-10-10 15:48:20		1071964
26	Lukov D.R. (Gendalf)	233	0	90	2022-07-21 11:18:50		1188873
27	Pavlov A.V. (Anton)	59	29	141	2022-04-10 16:17:39		1335455
28	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1449504
29	Sigankov V.I. (vasilyvanc)	31	74	161	2021-10-17 20:21:01		1587211
30	Fedevych V.I. (labuch_fedev)	35	65	221	2021-07-20 17:09:05		1715563
31	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		1849917
32	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		1892104
33	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		1895851
34	Kozharinov A. (bubala)	198	0	10	2020-09-30 09:55:07		2137917
35	Samarin A. (not.yet.sql.master)	136	0	112	2020-08-14 15:12:10		2205280
36	Koptel'tsev V. (selber)	24	97	259	2020-06-24 00:22:07		2279610
37	Samarin A. (not.yet.sql.master)	136	0	138	2020-05-09 21:48:04		2344564
38	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		2352535
39	Fedevych V.I. (labuch_fedev)	35	65	226	2020-04-06 22:22:48		2392049
40	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2415777
41	Fokin A. (Vizitor )	42	52	217	2019-08-18 21:46:14		2726166
42	Bazavluk M. (DoNotLook)	94	9	141	2019-07-30 23:04:12		2753448
43	Romanov K.Yu. (kostik)	293	0	12	2019-07-25 08:42:10		2761510
44	Kordyum A. (alko58)	215	0	12	2019-07-12 15:58:52		2779793
45	Pavlov A.V. (Anton)	59	29	168	2019-06-12 01:20:21		2823872
46	Mal'tsev A.V. (Palkin)	110	8	218	2019-03-06 20:25:17		2963847
47	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3062115
48	Grishunin M.F. (MikhailFG)	90	10	144	2018-12-26 09:36:27		3065296
49	Shindin A.V. (AlShin)	23	99	45	2018-09-18 15:45:28		3207487
50	Skorohod I. (Dracul4ik)	77	15	45	2018-08-07 14:38:23		3268034
51	Voevutskij S.A. (SergLK)	201	0	45	2018-07-01 13:19:14		3321393
52	Zyrin V.E. (Vezyr)	521	0	29	2018-05-29 14:14:19		3368858
53	Chebykin D. (GriGrim)	37	62	228	2018-03-26 15:47:45		3460925
54	Shkarednyj I.N. (Gosha)	34	66	151	2018-03-23 22:38:32		3464834
55	Boiko D. (Angellore)	8	237	229	2018-03-23 21:19:51		3464912
56	Azbel' E.G. (enull)	76	15	148	2018-03-08 04:10:21		3487542
57	Shkarednyj I.N. (Gosha)	34	66	147	2018-02-26 08:13:30		3501699
58	F (uff)	64	25	95	2018-01-22 15:57:03		3551635
59	Aliev R. (y4nzi)	26	95	259	2017-12-17 18:48:39		3603304
60	Kordyum A. (alko58)	215	0	101	2017-11-21 18:18:43		3640774
61	Zajtsev V.S. (Sleeping)	20	112	190	2017-11-20 12:57:31		3642535
62	Aliev R. (y4nzi)	26	95	257	2017-11-19 19:09:17		3643603
63	Aliev R. (y4nzi)	26	95	255	2017-10-24 14:34:21		3681318
64	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		3708435
65	Skorohod I. (Dracul4ik)	77	15	156	2017-09-12 19:34:33		3741498
66	Grinkevich D.L. (Dmitrij Grinkevich)	21	109	115	2017-07-21 14:09:37		3818143
67	Bezhaev A.Yu. (Baser)	7	240	220	2017-06-19 06:24:54		3864687
68	Vorob'ev E.V. (Johnnymnemonic)	150	0	138	2017-06-16 09:15:49		3868836
69	F (uff)	64	25	185	2017-06-01 10:27:49		3890364
70	Skorohod I. (Dracul4ik)	77	15	146	2017-05-04 17:54:53		3930237
71	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		3992128
72	Skorohod I. (Dracul4ik)	77	15	144	2016-10-10 15:20:14		4227032
73	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4262505
74	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4341728
75	Karasyova N.V. (vlksm)	10	225	217	2016-04-23 11:28:43		4472064
76	Titovskij P.S. (kli3ma)	46	45	164	2016-03-25 05:49:30		4514163
77	Sivoglazov M.A. (Gaizenberg)	65	24	127	2015-11-28 14:08:52		4683583
78	Maslyaev V.S. (Velmont)	88	11	170	2015-11-06 14:01:20		4715271
79	Sivoglazov M.A. (Gaizenberg)	65	24	261	2015-10-13 23:22:26		4749270
80	Fomichev A.V. (Fomichev)	188	0	101	2015-10-07 11:21:04		4758631
81	Grinkevich D.L. (Dmitrij Grinkevich)	21	109	188	2015-09-19 12:34:48		4784477
82	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		4798781
83	Frolov (dr.shtopor)	80	14	141	2015-09-08 10:04:55		4800467
84	Varenikov D.M. (Dmitriy Varenikov)	18	125	217	2015-08-31 08:35:37		4812077
85	Chebykin D. (GriGrim)	37	62	217	2015-08-28 21:04:30		4815648
86	Halushka B. (halushka)	45	46	211	2015-08-26 13:33:28		4818979
87	Maslyaev V.S. (Velmont)	88	11	140	2015-07-27 05:27:50		4862664
88	Khromulyak O.M. (ChOleg)	119	5	150	2015-07-26 08:20:51		4863931
89	Chebykin D. (GriGrim)	37	62	216	2015-07-20 09:39:02		4872493
90	Halushka B. (halushka)	45	46	143	2015-07-13 15:28:55		4882223
91	Halushka B. (halushka)	45	46	204	2015-07-07 15:42:03		4890850
92	Skorohod I. (Dracul4ik)	77	15	256	2015-01-28 15:03:11		5121289
93	Skorohod I. (Dracul4ik)	77	15	252	2015-01-27 11:56:41		5122916
94	Sysoev A.V. (Sysa)	49	39	143	2014-12-25 01:16:19		5171076
95	Grishin (alvigr)	78	15	185	2014-12-05 11:56:29		5199236
96	Fajnberg M.L. (burnall)	72	21	122	2014-10-31 12:46:14		5249586
97	Kabanets E.G. (azkaban)	92	9	209	2014-09-27 01:00:23		5299252
98	Sivoglazov M.A. (Gaizenberg)	65	24	178	2014-08-26 23:17:37		5343995
99	Perfilov B.V. (B o r i s)	99	9	29	2014-02-23 19:20:39		5609192
100	Utyonkov M.N. (=Maxim=)	47	42	255	2014-02-03 12:39:35		5638393

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