Recent leaders activity at "SQL Exercises"

SQL exercises

August 31, 11:57 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: 15154

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Komarov A.N. (Shveda Saulya)	35	68	165	2026-08-28 13:41:52		4215
2	Sarkis'yan G. (gennadi_s)	14	184	206	2026-08-15 14:26:50	2026-08-21 15:41:57	8715
3	Frolov K.A. (Murderface_)	135	0	24	2026-08-21 11:04:04	2026-08-21 11:17:39	14
4	Koptel'tsev V. (selber)	19	133	188	2026-08-21 06:33:00		14724
5	Komarov A.N. (Shveda Saulya)	35	68	160	2026-05-09 13:24:21	2026-08-20 17:24:55	148561
6	Williams B. (BW)	36	67	252	2026-07-31 13:33:49		44543
7	Williams B. (BW)	36	67	264	2026-07-29 13:21:27		47436
8	Sigankov V.I. (vasilyvanc)	33	74	216	2026-07-23 12:13:08		56144
9	Sigankov V.I. (vasilyvanc)	33	74	241	2026-07-21 14:05:13		58912
10	Zajtsev V.S. (Sleeping)	22	118	241	2026-06-16 18:38:55		109038
11	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		143467
12	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		177132
13	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		187360
14	Vyazovetskov A.S. (alex_v)	6	245	264	2026-04-22 19:15:17		188202
15	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		218914
16	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		312141
17	Lukov D.R. (Gendalf)	247	0	32	2025-12-05 01:36:21		387981
18	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		599684
19	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		833807
20	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		845996
21	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		993849
22	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		995157
23	Frolov K.A. (Murderface_)	135	0	138	2024-09-23 14:49:59		1017907
24	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1127446
25	Slavutinskij V.V. (Vasilko)	455	0	5	2024-04-22 17:26:35		1239511
26	Slavutinskij V.V. (Vasilko)	455	0	7	2024-04-22 17:26:21		1239511
27	Williams B. (BW)	36	67	141	2024-04-02 11:30:28		1268667
28	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1295188
29	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1308819
30	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1374862
31	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1378176
32	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1380565
33	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1413230
34	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1465493
35	Rudikov E. (cubie)	136	0	138	2023-10-31 17:27:54		1490069
36	Shkarednyj I.N. (Gosha)	37	66	198	2023-03-25 21:10:27		1806647
37	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1910636
38	Koptel'tsev V. (selber)	19	133	237	2022-11-06 21:16:51		2006800
39	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		2046009
40	Lukov D.R. (Gendalf)	247	0	90	2022-07-21 11:18:50		2162918
41	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2309500
42	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2561256
43	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2689608
44	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2823962
45	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2866149
46	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2869896
47	Kozharinov A. (bubala)	213	0	10	2020-09-30 09:55:07		3111962
48	Samarin A. (not.yet.sql.master)	147	0	112	2020-08-14 15:12:10		3179325
49	Koptel'tsev V. (selber)	19	133	259	2020-06-24 00:22:07		3253655
50	Samarin A. (not.yet.sql.master)	147	0	138	2020-05-09 21:48:04		3318609
51	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3326580
52	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3366094
53	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3389822
54	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3700211
55	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3727493
56	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3735555
57	Kordyum A. (alko58)	231	0	12	2019-07-12 15:58:52		3753838
58	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3797917
59	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3937892
60	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		4036160
61	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		4039341
62	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4181532
63	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4242079
64	Voevutskij S.A. (SergLK)	219	0	45	2018-07-01 13:19:14		4295438
65	Zyrin V.E. (Vezyr)	552	0	29	2018-05-29 14:14:19		4342903
66	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4434970
67	Shkarednyj I.N. (Gosha)	37	66	151	2018-03-23 22:38:32		4438879
68	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4438957
69	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4461587
70	Shkarednyj I.N. (Gosha)	37	66	147	2018-02-26 08:13:30		4475744
71	F (uff)	65	25	95	2018-01-22 15:57:03		4525680
72	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4577349
73	Kordyum A. (alko58)	231	0	101	2017-11-21 18:18:43		4614819
74	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4616580
75	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4617648
76	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4655363
77	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4682480
78	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4715543
79	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4792188
80	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4838732
81	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4842881
82	F (uff)	65	25	185	2017-06-01 10:27:49		4864409
83	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4904282
84	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4966173
85	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5201077
86	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5236550
87	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5315773
88	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5446109
89	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5488208
90	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5657628
91	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5689316
92	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5723315
93	Fomichev A.V. (Fomichev)	200	0	101	2015-10-07 11:21:04		5732676
94	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5758522
95	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5772826
96	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5774512
97	Varenikov D.M. (Dmitriy Varenikov)	20	130	263	2015-08-31 08:35:37		5786122
98	Chebykin D. (GriGrim)	39	62	263	2015-08-28 21:04:30		5789693
99	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5793024
100	Maslyaev V.S. (Velmont)	91	11	140	2015-07-27 05:27:50		5836709

Home
Week news

Certification

SQL exercises

HELP

Performance

Profile
References

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