Recent leaders activity at "SQL Exercises"

SQL exercises

July 09, 10:54 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: 15130

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Makarov I.A. (_Bkmz_)	67	23	177	2025-07-06 09:38:39	2025-07-06 11:56:40	138
2	Makarov I.A. (_Bkmz_)	67	23	166	2025-07-05 10:06:56	2025-07-05 10:51:15	44
3	Sarkis'yan G. (gennadi_s)	24	99	175	2025-07-04 14:31:46		6983
4	Sarkis'yan G. (gennadi_s)	24	99	174	2025-06-29 14:46:07	2025-06-30 13:01:05	1335
5	Makarov I.A. (_Bkmz_)	67	23	170	2025-06-29 10:21:01	2025-06-29 12:50:43	150
6	Makarov I.A. (_Bkmz_)	67	23	204	2025-06-28 10:03:44	2025-06-28 12:34:50	151
7	Sarkis'yan G. (gennadi_s)	24	99	173	2025-06-22 15:29:39	2025-06-27 10:00:13	6871
8	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		119422
9	Fomichev A.V. (Fomichev)	195	0	7	2025-02-25 02:16:37		193478
10	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		201577
11	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		231825
12	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		244013
13	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		391866
14	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		393174
15	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		415925
16	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		443365
17	Zajtsev V.S. (Sleeping)	21	112	164	2024-07-09 13:11:22		525463
18	Slavutinskij V.V. (Vasilko)	446	0	5	2024-04-22 17:26:35		637528
19	Slavutinskij V.V. (Vasilko)	446	0	7	2024-04-22 17:26:21		637528
20	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		666684
21	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		693205
22	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		706837
23	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		772879
24	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		776193
25	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		778583
26	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		811248
27	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		856423
28	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		863510
29	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		888087
30	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1133119
31	Zajtsev V.S. (Sleeping)	21	112	150	2023-04-18 11:40:16		1170675
32	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1204664
33	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1308653
34	Koptel'tsev V. (selber)	20	113	237	2022-11-06 21:16:51		1404818
35	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1444026
36	Lukov D.R. (Gendalf)	240	0	90	2022-07-21 11:18:50		1560936
37	Pavlov A.V. (Anton)	59	29	141	2022-04-10 16:17:39		1707517
38	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1821567
39	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		1959274
40	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2087626
41	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2221980
42	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2264166
43	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2267914
44	Kozharinov A. (bubala)	206	0	10	2020-09-30 09:55:07		2509980
45	Samarin A. (not.yet.sql.master)	139	0	112	2020-08-14 15:12:10		2577343
46	Koptel'tsev V. (selber)	20	113	259	2020-06-24 00:22:07		2651673
47	Samarin A. (not.yet.sql.master)	139	0	138	2020-05-09 21:48:04		2716627
48	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2724597
49	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2764112
50	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2787839
51	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3098229
52	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3125511
53	Romanov K.Yu. (kostik)	304	0	12	2019-07-25 08:42:10		3133573
54	Kordyum A. (alko58)	224	0	12	2019-07-12 15:58:52		3151856
55	Pavlov A.V. (Anton)	59	29	168	2019-06-12 01:20:21		3195934
56	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3335910
57	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3434177
58	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3437358
59	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3579549
60	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3640096
61	Voevutskij S.A. (SergLK)	211	0	45	2018-07-01 13:19:14		3693456
62	Zyrin V.E. (Vezyr)	537	0	29	2018-05-29 14:14:19		3740920
63	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3832987
64	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3836896
65	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3836975
66	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		3859604
67	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		3873761
68	F (uff)	64	25	95	2018-01-22 15:57:03		3923698
69	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		3975366
70	Kordyum A. (alko58)	224	0	101	2017-11-21 18:18:43		4012836
71	Zajtsev V.S. (Sleeping)	21	112	190	2017-11-20 12:57:31		4014597
72	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4015666
73	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4053380
74	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4080497
75	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4113560
76	Grinkevich D.L. (Dmitrij Grinkevich)	22	109	115	2017-07-21 14:09:37		4190205
77	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4236750
78	Vorob'ev E.V. (Johnnymnemonic)	158	0	138	2017-06-16 09:15:49		4240899
79	F (uff)	64	25	185	2017-06-01 10:27:49		4262427
80	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4302300
81	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4364191
82	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4599095
83	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4634567
84	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4713791
85	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4844126
86	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		4886225
87	Sivoglazov M.A. (Gaizenberg)	65	24	127	2015-11-28 14:08:52		5055646
88	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5087333
89	Sivoglazov M.A. (Gaizenberg)	65	24	261	2015-10-13 23:22:26		5121332
90	Fomichev A.V. (Fomichev)	195	0	101	2015-10-07 11:21:04		5130694
91	Grinkevich D.L. (Dmitrij Grinkevich)	22	109	188	2015-09-19 12:34:48		5156540
92	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5170844
93	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5172530
94	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		5184139
95	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5187710
96	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5191041
97	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5234727
98	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5235994
99	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5244556
100	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5254286

Home
Week news

Certification

SQL exercises

HELP

Performance

Profile
References

Copyright SQL-EX © 2002-2025. All rights reserved.
contact