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SQL exercises

April 18, 00:58 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: 15147

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		746
2	Williams B. (BW)	34	66	303	2025-04-08 16:47:17	2025-04-17 12:24:23	12697
3	Koptel'tsev V. (selber)	21	110	167	2025-04-12 13:06:32		7912
4	Sarkis'yan G. (gennadi_s)	31	77	164	2025-04-11 16:03:00		9175
5	Sarkis'yan G. (gennadi_s)	31	77	163	2025-03-30 14:14:08	2025-04-09 18:01:54	14628
6	Williams B. (BW)	34	66	306	2025-04-08 15:18:15	2025-04-08 16:42:28	84
7	Fomichev A.V. (Fomichev)	194	0	7	2025-02-25 02:16:37		74802
8	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		82900
9	Chuvstvin M. (chuvstvinmaxim)	87	11	141	2025-01-29 11:09:56		113148
10	Chuvstvin M. (chuvstvinmaxim)	87	11	258	2025-01-21 00:01:28		125337
11	Lyubomudrov R.G. (born2tilt)	70	22	162	2024-10-10 07:48:40		273190
12	Lyubomudrov R.G. (born2tilt)	70	22	202	2024-10-09 10:00:37		274498
13	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		297248
14	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		324689
15	Zajtsev V.S. (Sleeping)	20	112	164	2024-07-09 13:11:22		406787
16	Slavutinskij V.V. (Vasilko)	444	0	5	2024-04-22 17:26:35		518852
17	Slavutinskij V.V. (Vasilko)	444	0	7	2024-04-22 17:26:21		518852
18	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		548008
19	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		574529
20	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		588160
21	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		654203
22	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		657517
23	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		659906
24	Nikolaenko A.V. (Shadow77)	82	14	135	2023-12-24 02:07:10		692571
25	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		737747
26	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		744834
27	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		769410
28	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1014442
29	Zajtsev V.S. (Sleeping)	20	112	150	2023-04-18 11:40:16		1051998
30	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1085988
31	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1189977
32	Koptel'tsev V. (selber)	21	110	237	2022-11-06 21:16:51		1286141
33	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1325350
34	Lukov D.R. (Gendalf)	238	0	90	2022-07-21 11:18:50		1442259
35	Pavlov A.V. (Anton)	59	29	141	2022-04-10 16:17:39		1588841
36	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1702890
37	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		1840597
38	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		1968949
39	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2103303
40	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2145490
41	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2149237
42	Kozharinov A. (bubala)	204	0	10	2020-09-30 09:55:07		2391303
43	Samarin A. (not.yet.sql.master)	139	0	112	2020-08-14 15:12:10		2458666
44	Koptel'tsev V. (selber)	21	110	259	2020-06-24 00:22:07		2532996
45	Samarin A. (not.yet.sql.master)	139	0	138	2020-05-09 21:48:04		2597950
46	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2605921
47	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2645436
48	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2669163
49	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		2979552
50	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3006834
51	Romanov K.Yu. (kostik)	304	0	12	2019-07-25 08:42:10		3014896
52	Kordyum A. (alko58)	222	0	12	2019-07-12 15:58:52		3033179
53	Pavlov A.V. (Anton)	59	29	168	2019-06-12 01:20:21		3077258
54	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3217233
55	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3315501
56	Grishunin M.F. (MikhailFG)	91	10	144	2018-12-26 09:36:27		3318682
57	Shindin A.V. (AlShin)	24	99	45	2018-09-18 15:45:28		3460873
58	Skorohod I. (Dracul4ik)	77	15	45	2018-08-07 14:38:23		3521420
59	Voevutskij S.A. (SergLK)	209	0	45	2018-07-01 13:19:14		3574779
60	Zyrin V.E. (Vezyr)	536	0	29	2018-05-29 14:14:19		3622244
61	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3714311
62	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3718220
63	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3718298
64	Azbel' E.G. (enull)	76	15	148	2018-03-08 04:10:21		3740928
65	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		3755085
66	F (uff)	64	25	95	2018-01-22 15:57:03		3805021
67	Aliev R. (y4nzi)	26	95	259	2017-12-17 18:48:39		3856690
68	Kordyum A. (alko58)	222	0	101	2017-11-21 18:18:43		3894160
69	Zajtsev V.S. (Sleeping)	20	112	190	2017-11-20 12:57:31		3895921
70	Aliev R. (y4nzi)	26	95	257	2017-11-19 19:09:17		3896989
71	Aliev R. (y4nzi)	26	95	255	2017-10-24 14:34:21		3934704
72	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		3961821
73	Skorohod I. (Dracul4ik)	77	15	156	2017-09-12 19:34:33		3994884
74	Grinkevich D.L. (Dmitrij Grinkevich)	22	109	115	2017-07-21 14:09:37		4071529
75	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4118073
76	Vorob'ev E.V. (Johnnymnemonic)	157	0	138	2017-06-16 09:15:49		4122222
77	F (uff)	64	25	185	2017-06-01 10:27:49		4143750
78	Skorohod I. (Dracul4ik)	77	15	146	2017-05-04 17:54:53		4183623
79	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4245514
80	Skorohod I. (Dracul4ik)	77	15	144	2016-10-10 15:20:14		4480418
81	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4515891
82	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4595114
83	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4725450
84	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		4767549
85	Sivoglazov M.A. (Gaizenberg)	65	24	127	2015-11-28 14:08:52		4936969
86	Maslyaev V.S. (Velmont)	89	11	170	2015-11-06 14:01:20		4968657
87	Sivoglazov M.A. (Gaizenberg)	65	24	261	2015-10-13 23:22:26		5002656
88	Fomichev A.V. (Fomichev)	194	0	101	2015-10-07 11:21:04		5012017
89	Grinkevich D.L. (Dmitrij Grinkevich)	22	109	188	2015-09-19 12:34:48		5037864
90	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5052167
91	Frolov (dr.shtopor)	80	14	141	2015-09-08 10:04:55		5053853
92	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		5065463
93	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5069034
94	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5072365
95	Maslyaev V.S. (Velmont)	89	11	140	2015-07-27 05:27:50		5116050
96	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5117317
97	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5125879
98	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5135609
99	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5144236
100	Skorohod I. (Dracul4ik)	77	15	256	2015-01-28 15:03:11		5374675

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