Recent leaders activity at "SQL Exercises"

SQL exercises

October 22, 16:10 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: 13917

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	13	192	192	2026-10-17 13:29:17	2026-10-22 14:52:53	7284
2	Frolov K.A. (Murderface_)	136	0	53	2026-10-19 19:02:15		4149
3	Krasovskij E.A. (pegoopik)	1	268	192	2026-10-16 18:51:16	2026-10-16 18:51:23	0
4	Safronov P.A. (Paulus73)	117	6	140	2026-10-09 09:42:14	2026-10-15 12:25:59	8804
5	Vinogradova S.M. (Tigra1)	125	4	141	2026-10-10 17:01:15		17230
6	Sarkis'yan G. (gennadi_s)	13	192	208	2026-10-08 15:07:00	2026-10-10 12:57:58	2751
7	Kostomarov A.V. (al29)	5	245	53	2026-09-30 08:53:59		32117
8	Koptel'tsev V. (selber)	18	133	183	2026-09-07 08:11:06		65280
9	Komarov A.N. (Shveda Saulya)	35	68	165	2026-08-28 13:41:52		79349
10	Koptel'tsev V. (selber)	18	133	188	2026-08-21 06:33:00		89858
11	Williams B. (BW)	36	65	252	2026-07-31 13:33:49		119677
12	Williams B. (BW)	36	65	264	2026-07-29 13:21:27		122569
13	Sigankov V.I. (vasilyvanc)	33	72	216	2026-07-23 12:13:08		131278
14	Sigankov V.I. (vasilyvanc)	33	72	241	2026-07-21 14:05:13		134046
15	Zajtsev V.S. (Sleeping)	22	116	241	2026-06-16 18:38:55		184172
16	Chernov D.V. (Kursist)	3	260	241	2026-05-23 20:49:50		218601
17	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		252266
18	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		262494
19	Vyazovetskov A.S. (alex_v)	6	243	264	2026-04-22 19:15:17		263336
20	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		294047
21	Petrov Y. (YuriPetrov)	32	76	210	2026-01-26 17:36:12		387275
22	Lukov D.R. (Gendalf)	248	0	32	2025-12-05 01:36:21		463115
23	Chebykin D. (GriGrim)	39	60	210	2025-07-11 01:12:59		674818
24	Chuvstvin M. (chuvstvinmaxim)	92	9	141	2025-01-29 11:09:56		908941
25	Chuvstvin M. (chuvstvinmaxim)	92	9	258	2025-01-21 00:01:28		921129
26	Lyubomudrov R.G. (born2tilt)	73	20	162	2024-10-10 07:48:40		1068982
27	Lyubomudrov R.G. (born2tilt)	73	20	202	2024-10-09 10:00:37		1070290
28	Frolov K.A. (Murderface_)	136	0	138	2024-09-23 14:49:59		1093041
29	Zajtsev V.S. (Sleeping)	22	116	164	2024-07-09 13:11:22		1202580
30	Slavutinskij V.V. (Vasilko)	457	0	5	2024-04-22 17:26:35		1314644
31	Slavutinskij V.V. (Vasilko)	457	0	7	2024-04-22 17:26:21		1314645
32	Williams B. (BW)	36	65	141	2024-04-02 11:30:28		1343800
33	Kukushkin S.A. (smog)	16	151	194	2024-03-15 01:29:39		1370321
34	Latyntsev N.G. (aks_nsk)	54	35	253	2024-03-05 14:17:51		1383953
35	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1449995
36	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1453309
37	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1455699
38	Nikolaenko A.V. (Shadow77)	82	14	135	2023-12-24 02:07:10		1488364
39	Boiko D. (Angellore)	9	231	262	2023-11-17 19:04:36		1540626
40	Rudikov E. (cubie)	137	0	138	2023-10-31 17:27:54		1565203
41	Shkarednyj I.N. (Gosha)	37	64	198	2023-03-25 21:10:27		1881780
42	Latyntsev N.G. (aks_nsk)	54	35	255	2023-01-12 16:01:39		1985769
43	Koptel'tsev V. (selber)	18	133	237	2022-11-06 21:16:51		2081934
44	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		2121143
45	Lukov D.R. (Gendalf)	248	0	90	2022-07-21 11:18:50		2238052
46	Pavlov A.V. (Anton)	59	29	141	2022-04-10 16:17:39		2384633
47	Sigankov V.I. (vasilyvanc)	33	72	161	2021-10-17 20:21:01		2636390
48	Fedevych V.I. (labuch_fedev)	38	63	221	2021-07-20 17:09:05		2764742
49	Pusev D.V. (Pusev_Denis)	19	132	234	2021-04-18 09:55:08		2899096
50	Kukushkin S.A. (smog)	16	151	12	2021-03-20 02:48:36		2941282
51	Pusev D.V. (Pusev_Denis)	19	132	159	2021-03-17 12:21:10		2945030
52	Kozharinov A. (bubala)	214	0	10	2020-09-30 09:55:07		3187096
53	Samarin A. (not.yet.sql.master)	148	0	112	2020-08-14 15:12:10		3254459
54	Koptel'tsev V. (selber)	18	133	259	2020-06-24 00:22:07		3328789
55	Samarin A. (not.yet.sql.master)	148	0	138	2020-05-09 21:48:04		3393743
56	Karasyova N.V. (vlksm)	10	223	230	2020-05-04 08:57:25		3401714
57	Fedevych V.I. (labuch_fedev)	38	63	226	2020-04-06 22:22:48		3441228
58	Pusev D.V. (Pusev_Denis)	19	132	184	2020-03-21 10:55:32		3464955
59	Fokin A. (Vizitor )	44	50	263	2019-08-18 21:46:14		3775345
60	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3802627
61	Romanov K.Yu. (kostik)	313	0	12	2019-07-25 08:42:10		3810689
62	Kordyum A. (alko58)	233	0	12	2019-07-12 15:58:52		3828972
63	Pavlov A.V. (Anton)	59	29	168	2019-06-12 01:20:21		3873051
64	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		4013026
65	Kurochkin P.A. (qwrqwr)	12	209	227	2018-12-28 14:37:25		4111294
66	Grishunin M.F. (MikhailFG)	90	10	144	2018-12-26 09:36:27		4114474
67	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4256665
68	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4317213
69	Voevutskij S.A. (SergLK)	220	0	45	2018-07-01 13:19:14		4370572
70	Zyrin V.E. (Vezyr)	553	0	29	2018-05-29 14:14:19		4418037
71	Chebykin D. (GriGrim)	39	60	228	2018-03-26 15:47:45		4510103
72	Shkarednyj I.N. (Gosha)	37	64	151	2018-03-23 22:38:32		4514012
73	Boiko D. (Angellore)	9	231	229	2018-03-23 21:19:51		4514091
74	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4536721
75	Shkarednyj I.N. (Gosha)	37	64	147	2018-02-26 08:13:30		4550877
76	F (uff)	66	23	95	2018-01-22 15:57:03		4600814
77	Aliev R. (y4nzi)	27	93	259	2017-12-17 18:48:39		4652482
78	Kordyum A. (alko58)	233	0	101	2017-11-21 18:18:43		4689952
79	Zajtsev V.S. (Sleeping)	22	116	190	2017-11-20 12:57:31		4691713
80	Aliev R. (y4nzi)	27	93	257	2017-11-19 19:09:17		4692782
81	Aliev R. (y4nzi)	27	93	255	2017-10-24 14:34:21		4730497
82	Kukushkin S.A. (smog)	16	151	171	2017-10-05 18:37:27		4757613
83	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4790676
84	Grinkevich D.L. (Dmitrij Grinkevich)	23	107	115	2017-07-21 14:09:37		4867321
85	Bezhaev A.Yu. (Baser)	8	234	220	2017-06-19 06:24:54		4913866
86	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4918015
87	F (uff)	66	23	185	2017-06-01 10:27:49		4939543
88	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4979416
89	Movlyanov A.P. (Oct)	14	191	218	2017-03-22 18:23:50		5041307
90	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5276211
91	Sysoev A.V. (Sysa)	53	37	165	2016-09-16 00:07:24		5311684
92	Sysoev A.V. (Sysa)	53	37	168	2016-07-22 23:44:07		5390907
93	Karasyova N.V. (vlksm)	10	223	263	2016-04-23 11:28:43		5521242
94	Titovskij P.S. (kli3ma)	46	45	164	2016-03-25 05:49:30		5563341
95	Sivoglazov M.A. (Gaizenberg)	70	22	127	2015-11-28 14:08:52		5732762
96	Maslyaev V.S. (Velmont)	94	9	170	2015-11-06 14:01:20		5764450
97	Sivoglazov M.A. (Gaizenberg)	70	22	261	2015-10-13 23:22:26		5798449
98	Fomichev A.V. (Fomichev)	200	0	101	2015-10-07 11:21:04		5807810
99	Grinkevich D.L. (Dmitrij Grinkevich)	23	107	188	2015-09-19 12:34:48		5833656
100	Movlyanov A.P. (Oct)	14	191	194	2015-09-09 14:10:52		5847960

Home
Week news

Certification

SQL exercises

HELP

Performance

Profile
References

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