Recent leaders activity at "SQL Exercises"

SQL exercises

February 08, 04:03 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: 15355

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	16	149	193	2026-02-02 14:48:13	2026-02-06 14:23:09	5735
2	Komarov A.N. (Shveda Saulya)	43	52	149	2023-05-14 13:36:07	2026-02-05 21:16:28	1437580
3	Sarkis'yan G. (gennadi_s)	16	149	192	2026-01-29 14:47:50	2026-01-29 16:40:41	113
4	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		17907
5	Lukov D.R. (Gendalf)	243	0	32	2025-12-05 01:36:21		93747
6	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		305450
7	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		427170
8	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		509325
9	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		539573
10	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		551762
11	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		699614
12	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		700922
13	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		723673
14	Komarov A.N. (Shveda Saulya)	43	52	157	2024-09-04 13:29:47		751113
15	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		833212
16	Slavutinskij V.V. (Vasilko)	451	0	5	2024-04-22 17:26:35		945276
17	Slavutinskij V.V. (Vasilko)	451	0	7	2024-04-22 17:26:21		945277
18	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		974433
19	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		1000953
20	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		1014585
21	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1080628
22	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1083941
23	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1086331
24	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1118996
25	Komarov A.N. (Shveda Saulya)	43	52	150	2023-11-22 17:11:28		1164172
26	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1171258
27	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1195835
28	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1478423
29	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1512413
30	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1616401
31	Koptel'tsev V. (selber)	21	119	237	2022-11-06 21:16:51		1712566
32	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1751775
33	Lukov D.R. (Gendalf)	243	0	90	2022-07-21 11:18:50		1868684
34	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2015265
35	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2267022
36	Fedevych V.I. (labuch_fedev)	37	65	221	2021-07-20 17:09:05		2395374
37	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2529728
38	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2571914
39	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2575662
40	Kozharinov A. (bubala)	208	0	10	2020-09-30 09:55:07		2817728
41	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		2885091
42	Koptel'tsev V. (selber)	21	119	259	2020-06-24 00:22:07		2959421
43	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		3024375
44	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		3032346
45	Fedevych V.I. (labuch_fedev)	37	65	226	2020-04-06 22:22:48		3071860
46	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3095588
47	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3405977
48	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3433259
49	Romanov K.Yu. (kostik)	309	0	12	2019-07-25 08:42:10		3441321
50	Kordyum A. (alko58)	225	0	12	2019-07-12 15:58:52		3459604
51	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3503683
52	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3643658
53	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3741926
54	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3745107
55	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3887298
56	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3947845
57	Voevutskij S.A. (SergLK)	214	0	45	2018-07-01 13:19:14		4001204
58	Zyrin V.E. (Vezyr)	543	0	29	2018-05-29 14:14:19		4048669
59	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		4140735
60	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4144645
61	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4144723
62	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4167353
63	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4181510
64	F (uff)	65	25	95	2018-01-22 15:57:03		4231446
65	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4283114
66	Kordyum A. (alko58)	225	0	101	2017-11-21 18:18:43		4320584
67	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4322346
68	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4323414
69	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4361129
70	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4388246
71	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4421309
72	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4497953
73	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4544498
74	Vorob'ev E.V. (Johnnymnemonic)	161	0	138	2017-06-16 09:15:49		4548647
75	F (uff)	65	25	185	2017-06-01 10:27:49		4570175
76	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4610048
77	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4671939
78	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4906843
79	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4942316
80	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		5021539
81	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5151874
82	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5193974
83	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5363394
84	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5395082
85	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5429081
86	Fomichev A.V. (Fomichev)	196	0	101	2015-10-07 11:21:04		5438442
87	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5464288
88	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5478592
89	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5480278
90	Varenikov D.M. (Dmitriy Varenikov)	19	128	263	2015-08-31 08:35:37		5491887
91	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5495459
92	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5498790
93	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5542475
94	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5543742
95	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5552304
96	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5562034
97	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5570661
98	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5801100
99	Skorohod I. (Dracul4ik)	78	15	252	2015-01-27 11:56:41		5802726
100	Sysoev A.V. (Sysa)	49	39	143	2014-12-25 01:16:19		5850887

Home
Week news

Certification

SQL exercises

HELP

Performance

Profile
References

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