Recent leaders activity at "SQL Exercises"

SQL exercises

October 23, 00:05 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: 13920

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		4623
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		17704
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		32591
8	Koptel'tsev V. (selber)	18	133	183	2026-09-07 08:11:06		65754
9	Komarov A.N. (Shveda Saulya)	35	68	165	2026-08-28 13:41:52		79823
10	Koptel'tsev V. (selber)	18	133	188	2026-08-21 06:33:00		90332
11	Williams B. (BW)	36	65	252	2026-07-31 13:33:49		120151
12	Williams B. (BW)	36	65	264	2026-07-29 13:21:27		123044
13	Sigankov V.I. (vasilyvanc)	33	72	216	2026-07-23 12:13:08		131752
14	Sigankov V.I. (vasilyvanc)	33	72	241	2026-07-21 14:05:13		134520
15	Zajtsev V.S. (Sleeping)	22	116	241	2026-06-16 18:38:55		184646
16	Chernov D.V. (Kursist)	3	260	241	2026-05-23 20:49:50		219075
17	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		252740
18	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		262968
19	Vyazovetskov A.S. (alex_v)	6	243	264	2026-04-22 19:15:17		263810
20	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		294522
21	Petrov Y. (YuriPetrov)	32	76	210	2026-01-26 17:36:12		387749
22	Lukov D.R. (Gendalf)	248	0	32	2025-12-05 01:36:21		463589
23	Chebykin D. (GriGrim)	39	60	210	2025-07-11 01:12:59		675292
24	Chuvstvin M. (chuvstvinmaxim)	92	9	141	2025-01-29 11:09:56		909415
25	Chuvstvin M. (chuvstvinmaxim)	92	9	258	2025-01-21 00:01:28		921604
26	Lyubomudrov R.G. (born2tilt)	73	20	162	2024-10-10 07:48:40		1069457
27	Lyubomudrov R.G. (born2tilt)	73	20	202	2024-10-09 10:00:37		1070765
28	Frolov K.A. (Murderface_)	136	0	138	2024-09-23 14:49:59		1093515
29	Zajtsev V.S. (Sleeping)	22	116	164	2024-07-09 13:11:22		1203054
30	Slavutinskij V.V. (Vasilko)	457	0	5	2024-04-22 17:26:35		1315119
31	Slavutinskij V.V. (Vasilko)	457	0	7	2024-04-22 17:26:21		1315119
32	Williams B. (BW)	36	65	141	2024-04-02 11:30:28		1344275
33	Kukushkin S.A. (smog)	16	151	194	2024-03-15 01:29:39		1370796
34	Latyntsev N.G. (aks_nsk)	54	35	253	2024-03-05 14:17:51		1384427
35	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1450470
36	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1453784
37	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1456173
38	Nikolaenko A.V. (Shadow77)	82	14	135	2023-12-24 02:07:10		1488838
39	Boiko D. (Angellore)	9	231	262	2023-11-17 19:04:36		1541101
40	Rudikov E. (cubie)	137	0	138	2023-10-31 17:27:54		1565677
41	Shkarednyj I.N. (Gosha)	37	64	198	2023-03-25 21:10:27		1882255
42	Latyntsev N.G. (aks_nsk)	54	35	255	2023-01-12 16:01:39		1986244
43	Koptel'tsev V. (selber)	18	133	237	2022-11-06 21:16:51		2082408
44	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		2121617
45	Lukov D.R. (Gendalf)	248	0	90	2022-07-21 11:18:50		2238526
46	Pavlov A.V. (Anton)	59	29	141	2022-04-10 16:17:39		2385108
47	Sigankov V.I. (vasilyvanc)	33	72	161	2021-10-17 20:21:01		2636864
48	Fedevych V.I. (labuch_fedev)	38	63	221	2021-07-20 17:09:05		2765216
49	Pusev D.V. (Pusev_Denis)	19	132	234	2021-04-18 09:55:08		2899570
50	Kukushkin S.A. (smog)	16	151	12	2021-03-20 02:48:36		2941757
51	Pusev D.V. (Pusev_Denis)	19	132	159	2021-03-17 12:21:10		2945504
52	Kozharinov A. (bubala)	214	0	10	2020-09-30 09:55:07		3187570
53	Samarin A. (not.yet.sql.master)	148	0	112	2020-08-14 15:12:10		3254933
54	Koptel'tsev V. (selber)	18	133	259	2020-06-24 00:22:07		3329263
55	Samarin A. (not.yet.sql.master)	148	0	138	2020-05-09 21:48:04		3394217
56	Karasyova N.V. (vlksm)	10	223	230	2020-05-04 08:57:25		3402188
57	Fedevych V.I. (labuch_fedev)	38	63	226	2020-04-06 22:22:48		3441702
58	Pusev D.V. (Pusev_Denis)	19	132	184	2020-03-21 10:55:32		3465430
59	Fokin A. (Vizitor )	44	50	263	2019-08-18 21:46:14		3775819
60	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3803101
61	Romanov K.Yu. (kostik)	313	0	12	2019-07-25 08:42:10		3811163
62	Kordyum A. (alko58)	233	0	12	2019-07-12 15:58:52		3829446
63	Pavlov A.V. (Anton)	59	29	168	2019-06-12 01:20:21		3873525
64	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		4013500
65	Kurochkin P.A. (qwrqwr)	12	209	227	2018-12-28 14:37:25		4111768
66	Grishunin M.F. (MikhailFG)	90	10	144	2018-12-26 09:36:27		4114949
67	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4257140
68	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4317687
69	Voevutskij S.A. (SergLK)	220	0	45	2018-07-01 13:19:14		4371046
70	Zyrin V.E. (Vezyr)	553	0	29	2018-05-29 14:14:19		4418511
71	Chebykin D. (GriGrim)	39	60	228	2018-03-26 15:47:45		4510577
72	Shkarednyj I.N. (Gosha)	37	64	151	2018-03-23 22:38:32		4514487
73	Boiko D. (Angellore)	9	231	229	2018-03-23 21:19:51		4514565
74	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4537195
75	Shkarednyj I.N. (Gosha)	37	64	147	2018-02-26 08:13:30		4551352
76	F (uff)	66	23	95	2018-01-22 15:57:03		4601288
77	Aliev R. (y4nzi)	27	93	259	2017-12-17 18:48:39		4652957
78	Kordyum A. (alko58)	233	0	101	2017-11-21 18:18:43		4690426
79	Zajtsev V.S. (Sleeping)	22	116	190	2017-11-20 12:57:31		4692188
80	Aliev R. (y4nzi)	27	93	257	2017-11-19 19:09:17		4693256
81	Aliev R. (y4nzi)	27	93	255	2017-10-24 14:34:21		4730971
82	Kukushkin S.A. (smog)	16	151	171	2017-10-05 18:37:27		4758088
83	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4791151
84	Grinkevich D.L. (Dmitrij Grinkevich)	23	107	115	2017-07-21 14:09:37		4867796
85	Bezhaev A.Yu. (Baser)	8	234	220	2017-06-19 06:24:54		4914340
86	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4918489
87	F (uff)	66	23	185	2017-06-01 10:27:49		4940017
88	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4979890
89	Movlyanov A.P. (Oct)	14	191	218	2017-03-22 18:23:50		5041781
90	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5276685
91	Sysoev A.V. (Sysa)	53	37	165	2016-09-16 00:07:24		5312158
92	Sysoev A.V. (Sysa)	53	37	168	2016-07-22 23:44:07		5391381
93	Karasyova N.V. (vlksm)	10	223	263	2016-04-23 11:28:43		5521716
94	Titovskij P.S. (kli3ma)	46	45	164	2016-03-25 05:49:30		5563816
95	Sivoglazov M.A. (Gaizenberg)	70	22	127	2015-11-28 14:08:52		5733236
96	Maslyaev V.S. (Velmont)	94	9	170	2015-11-06 14:01:20		5764924
97	Sivoglazov M.A. (Gaizenberg)	70	22	261	2015-10-13 23:22:26		5798923
98	Fomichev A.V. (Fomichev)	200	0	101	2015-10-07 11:21:04		5808284
99	Grinkevich D.L. (Dmitrij Grinkevich)	23	107	188	2015-09-19 12:34:48		5834130
100	Movlyanov A.P. (Oct)	14	191	194	2015-09-09 14:10:52		5848434

Home
Week news

Certification

SQL exercises

HELP

Performance

Profile
References

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