Recent leaders activity at "SQL Exercises"

SQL exercises

October 08, 04:53 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.
NOTE: Your browser should support Cookies and Javascript to provide correct usage of this site. If you use content filter, it should allow opening child windows to explore help pages.

  • Top 100
  • Top 100 on latest exercises
  • "Liberal" rating
  • Olympic rating
  • TOP 100 of Learning Stage
  • Rating by summation of ranks
  • Top 10 (photos)
  • Last-week results
  • Rating of second-stage exercises (average)
  • Rating of 2nd-stage exercises (median)
  • Author's rating  • 2nd stage rating up to exercise:
   enter No 
  • Rating on the exercise:
   enter No
  • Optimistic rating
   enter factor

  • Today statistics
  • Site's old residents
  • Recent leaders activity
  • Сhanges in exercises' TOP 10
  • Results' chart

SQL exercises

  • Site rules
  • SELECT (learning stage)
  • SELECT (learning stage,
      choosing DBMS)
  • SELECT (rating stages)
  • DML 
  • Transact-SQL tests
  • Data simulation
  • Data simulation (DML);
  • Visual simulation (painting)
  • Exercises voting (SELECT)
  • Exercises voting (DML)

  • Learning stage
  • Rating stages
  • Favorites
  • Search
  • Blogs

Certification

  • About certification
  • Certified professionals
  • Statistics
  • Statistics over regions (map)
  • Confirm certificate

HELP

Query optimization

Developers & Thanks

For employers

Support SQL-EX.RU

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: 13889

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Safronov P.A. (Paulus73)	135	0	138	2026-10-06 09:41:15	2026-10-07 02:54:18	1033
2	Filippkin D.V. (_dimon_)	2	262	240	2026-10-05 14:13:38	2026-10-06 15:58:40	1545
3	Safronov P.A. (Paulus73)	135	0	53	2026-10-05 09:54:21	2026-10-05 12:48:36	174
4	Vinogradova S.M. (Tigra1)	124	4	140	2026-10-04 15:59:22	2026-10-05 11:25:11	1166
5	Vinogradova S.M. (Tigra1)	124	4	139	2026-10-03 08:58:36	2026-10-03 17:36:51	518
6	Filippkin D.V. (_dimon_)	2	262	53	2026-10-02 10:34:22	2026-10-02 13:34:56	181
7	Kostomarov A.V. (al29)	5	247	53	2026-09-30 08:53:59		11280
8	Vinogradova S.M. (Tigra1)	124	4	53	2026-09-27 16:28:34	2026-09-27 18:57:12	149
9	Sigankov V.I. (vasilyvanc)	33	74	53	2026-09-23 14:18:31	2026-09-27 11:56:35	5618
10	Sarkis'yan G. (gennadi_s)	14	187	303	2026-09-26 14:18:02	2026-09-26 14:40:37	23
11	Koptel'tsev V. (selber)	19	133	183	2026-09-07 08:11:06		44443
12	Komarov A.N. (Shveda Saulya)	35	68	165	2026-08-28 13:41:52		58512
13	Koptel'tsev V. (selber)	19	133	188	2026-08-21 06:33:00		69021
14	Williams B. (BW)	36	67	252	2026-07-31 13:33:49		98840
15	Williams B. (BW)	36	67	264	2026-07-29 13:21:27		101732
16	Sigankov V.I. (vasilyvanc)	33	74	216	2026-07-23 12:13:08		110441
17	Sigankov V.I. (vasilyvanc)	33	74	241	2026-07-21 14:05:13		113209
18	Zajtsev V.S. (Sleeping)	22	118	241	2026-06-16 18:38:55		163335
19	Chernov D.V. (Kursist)	3	262	241	2026-05-23 20:49:50		197764
20	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		231429
21	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		241657
22	Vyazovetskov A.S. (alex_v)	6	245	264	2026-04-22 19:15:17		242499
23	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		273210
24	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		366438
25	Lukov D.R. (Gendalf)	247	0	32	2025-12-05 01:36:21		442277
26	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		653981
27	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		888104
28	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		900292
29	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		1048145
30	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		1049453
31	Frolov K.A. (Murderface_)	136	0	138	2024-09-23 14:49:59		1072204
32	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1181742
33	Slavutinskij V.V. (Vasilko)	456	0	5	2024-04-22 17:26:35		1293807
34	Slavutinskij V.V. (Vasilko)	456	0	7	2024-04-22 17:26:21		1293807
35	Williams B. (BW)	36	67	141	2024-04-02 11:30:28		1322963
36	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1349484
37	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1363116
38	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1429158
39	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1432472
40	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1434862
41	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1467527
42	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1519789
43	Rudikov E. (cubie)	137	0	138	2023-10-31 17:27:54		1544366
44	Shkarednyj I.N. (Gosha)	37	66	198	2023-03-25 21:10:27		1860943
45	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1964932
46	Koptel'tsev V. (selber)	19	133	237	2022-11-06 21:16:51		2061097
47	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		2100305
48	Lukov D.R. (Gendalf)	247	0	90	2022-07-21 11:18:50		2217215
49	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2363796
50	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2615553
51	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2743905
52	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2878259
53	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2920445
54	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2924193
55	Kozharinov A. (bubala)	213	0	10	2020-09-30 09:55:07		3166259
56	Samarin A. (not.yet.sql.master)	148	0	112	2020-08-14 15:12:10		3233622
57	Koptel'tsev V. (selber)	19	133	259	2020-06-24 00:22:07		3307952
58	Samarin A. (not.yet.sql.master)	148	0	138	2020-05-09 21:48:04		3372906
59	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3380876
60	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3420391
61	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3444118
62	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3754508
63	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3781790
64	Romanov K.Yu. (kostik)	313	0	12	2019-07-25 08:42:10		3789852
65	Kordyum A. (alko58)	231	0	12	2019-07-12 15:58:52		3808135
66	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3852213
67	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3992189
68	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		4090456
69	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		4093637
70	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4235828
71	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4296375
72	Voevutskij S.A. (SergLK)	219	0	45	2018-07-01 13:19:14		4349735
73	Zyrin V.E. (Vezyr)	553	0	29	2018-05-29 14:14:19		4397200
74	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4489266
75	Shkarednyj I.N. (Gosha)	37	66	151	2018-03-23 22:38:32		4493175
76	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4493254
77	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4515883
78	Shkarednyj I.N. (Gosha)	37	66	147	2018-02-26 08:13:30		4530040
79	F (uff)	65	25	95	2018-01-22 15:57:03		4579977
80	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4631645
81	Kordyum A. (alko58)	231	0	101	2017-11-21 18:18:43		4669115
82	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4670876
83	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4671945
84	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4709659
85	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4736776
86	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4769839
87	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4846484
88	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4893029
89	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4897178
90	F (uff)	65	25	185	2017-06-01 10:27:49		4918706
91	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4958579
92	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		5020470
93	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5255374
94	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5290846
95	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5370070
96	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5500405
97	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5542504
98	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5711925
99	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5743612
100	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5777611

Home
Week news

Certification

SQL exercises

HELP

Performance

Profile
References

Copyright SQL-EX © 2002-2026. All rights reserved.
contact