Recent leaders activity at "SQL Exercises"

SQL exercises

October 22, 00:27 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: 13907

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Frolov K.A. (Murderface_)	136	0	53	2026-10-19 19:02:15		3206
2	Sarkis'yan G. (gennadi_s)	14	188	192	2026-10-17 13:29:17		6419
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		16287
6	Sarkis'yan G. (gennadi_s)	14	188	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		31174
8	Koptel'tsev V. (selber)	18	133	183	2026-09-07 08:11:06		64337
9	Komarov A.N. (Shveda Saulya)	35	68	165	2026-08-28 13:41:52		78406
10	Koptel'tsev V. (selber)	18	133	188	2026-08-21 06:33:00		88915
11	Williams B. (BW)	36	65	252	2026-07-31 13:33:49		118734
12	Williams B. (BW)	36	65	264	2026-07-29 13:21:27		121626
13	Sigankov V.I. (vasilyvanc)	33	72	216	2026-07-23 12:13:08		130335
14	Sigankov V.I. (vasilyvanc)	33	72	241	2026-07-21 14:05:13		133103
15	Zajtsev V.S. (Sleeping)	22	116	241	2026-06-16 18:38:55		183229
16	Chernov D.V. (Kursist)	3	260	241	2026-05-23 20:49:50		217658
17	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		251323
18	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		261551
19	Vyazovetskov A.S. (alex_v)	6	243	264	2026-04-22 19:15:17		262393
20	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		293104
21	Petrov Y. (YuriPetrov)	32	76	210	2026-01-26 17:36:12		386332
22	Lukov D.R. (Gendalf)	248	0	32	2025-12-05 01:36:21		462171
23	Chebykin D. (GriGrim)	39	60	210	2025-07-11 01:12:59		673875
24	Chuvstvin M. (chuvstvinmaxim)	92	9	141	2025-01-29 11:09:56		907998
25	Chuvstvin M. (chuvstvinmaxim)	92	9	258	2025-01-21 00:01:28		920186
26	Lyubomudrov R.G. (born2tilt)	73	20	162	2024-10-10 07:48:40		1068039
27	Lyubomudrov R.G. (born2tilt)	73	20	202	2024-10-09 10:00:37		1069347
28	Frolov K.A. (Murderface_)	136	0	138	2024-09-23 14:49:59		1092098
29	Zajtsev V.S. (Sleeping)	22	116	164	2024-07-09 13:11:22		1201636
30	Slavutinskij V.V. (Vasilko)	457	0	5	2024-04-22 17:26:35		1313701
31	Slavutinskij V.V. (Vasilko)	457	0	7	2024-04-22 17:26:21		1313701
32	Williams B. (BW)	36	65	141	2024-04-02 11:30:28		1342857
33	Kukushkin S.A. (smog)	16	151	194	2024-03-15 01:29:39		1369378
34	Latyntsev N.G. (aks_nsk)	54	35	253	2024-03-05 14:17:51		1383010
35	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1449052
36	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1452366
37	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1454756
38	Nikolaenko A.V. (Shadow77)	82	14	135	2023-12-24 02:07:10		1487421
39	Boiko D. (Angellore)	9	231	262	2023-11-17 19:04:36		1539683
40	Rudikov E. (cubie)	137	0	138	2023-10-31 17:27:54		1564260
41	Shkarednyj I.N. (Gosha)	37	64	198	2023-03-25 21:10:27		1880837
42	Latyntsev N.G. (aks_nsk)	54	35	255	2023-01-12 16:01:39		1984826
43	Koptel'tsev V. (selber)	18	133	237	2022-11-06 21:16:51		2080991
44	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		2120200
45	Lukov D.R. (Gendalf)	248	0	90	2022-07-21 11:18:50		2237109
46	Pavlov A.V. (Anton)	59	29	141	2022-04-10 16:17:39		2383690
47	Sigankov V.I. (vasilyvanc)	33	72	161	2021-10-17 20:21:01		2635447
48	Fedevych V.I. (labuch_fedev)	38	63	221	2021-07-20 17:09:05		2763799
49	Pusev D.V. (Pusev_Denis)	19	132	234	2021-04-18 09:55:08		2898153
50	Kukushkin S.A. (smog)	16	151	12	2021-03-20 02:48:36		2940339
51	Pusev D.V. (Pusev_Denis)	19	132	159	2021-03-17 12:21:10		2944087
52	Kozharinov A. (bubala)	214	0	10	2020-09-30 09:55:07		3186153
53	Samarin A. (not.yet.sql.master)	148	0	112	2020-08-14 15:12:10		3253516
54	Koptel'tsev V. (selber)	18	133	259	2020-06-24 00:22:07		3327846
55	Samarin A. (not.yet.sql.master)	148	0	138	2020-05-09 21:48:04		3392800
56	Karasyova N.V. (vlksm)	10	223	230	2020-05-04 08:57:25		3400770
57	Fedevych V.I. (labuch_fedev)	38	63	226	2020-04-06 22:22:48		3440285
58	Pusev D.V. (Pusev_Denis)	19	132	184	2020-03-21 10:55:32		3464012
59	Fokin A. (Vizitor )	44	50	263	2019-08-18 21:46:14		3774402
60	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3801684
61	Romanov K.Yu. (kostik)	313	0	12	2019-07-25 08:42:10		3809746
62	Kordyum A. (alko58)	233	0	12	2019-07-12 15:58:52		3828029
63	Pavlov A.V. (Anton)	59	29	168	2019-06-12 01:20:21		3872107
64	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		4012083
65	Kurochkin P.A. (qwrqwr)	12	209	227	2018-12-28 14:37:25		4110350
66	Grishunin M.F. (MikhailFG)	90	10	144	2018-12-26 09:36:27		4113531
67	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4255722
68	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4316269
69	Voevutskij S.A. (SergLK)	220	0	45	2018-07-01 13:19:14		4369629
70	Zyrin V.E. (Vezyr)	553	0	29	2018-05-29 14:14:19		4417094
71	Chebykin D. (GriGrim)	39	60	228	2018-03-26 15:47:45		4509160
72	Shkarednyj I.N. (Gosha)	37	64	151	2018-03-23 22:38:32		4513069
73	Boiko D. (Angellore)	9	231	229	2018-03-23 21:19:51		4513148
74	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4535777
75	Shkarednyj I.N. (Gosha)	37	64	147	2018-02-26 08:13:30		4549934
76	F (uff)	66	23	95	2018-01-22 15:57:03		4599871
77	Aliev R. (y4nzi)	27	93	259	2017-12-17 18:48:39		4651539
78	Kordyum A. (alko58)	233	0	101	2017-11-21 18:18:43		4689009
79	Zajtsev V.S. (Sleeping)	22	116	190	2017-11-20 12:57:31		4690770
80	Aliev R. (y4nzi)	27	93	257	2017-11-19 19:09:17		4691839
81	Aliev R. (y4nzi)	27	93	255	2017-10-24 14:34:21		4729553
82	Kukushkin S.A. (smog)	16	151	171	2017-10-05 18:37:27		4756670
83	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4789733
84	Grinkevich D.L. (Dmitrij Grinkevich)	23	107	115	2017-07-21 14:09:37		4866378
85	Bezhaev A.Yu. (Baser)	8	234	220	2017-06-19 06:24:54		4912923
86	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4917072
87	F (uff)	66	23	185	2017-06-01 10:27:49		4938600
88	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4978473
89	Movlyanov A.P. (Oct)	13	191	218	2017-03-22 18:23:50		5040364
90	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5275268
91	Sysoev A.V. (Sysa)	53	37	165	2016-09-16 00:07:24		5310740
92	Sysoev A.V. (Sysa)	53	37	168	2016-07-22 23:44:07		5389964
93	Karasyova N.V. (vlksm)	10	223	263	2016-04-23 11:28:43		5520299
94	Titovskij P.S. (kli3ma)	46	45	164	2016-03-25 05:49:30		5562398
95	Sivoglazov M.A. (Gaizenberg)	70	22	127	2015-11-28 14:08:52		5731819
96	Maslyaev V.S. (Velmont)	94	9	170	2015-11-06 14:01:20		5763507
97	Sivoglazov M.A. (Gaizenberg)	70	22	261	2015-10-13 23:22:26		5797505
98	Fomichev A.V. (Fomichev)	200	0	101	2015-10-07 11:21:04		5806867
99	Grinkevich D.L. (Dmitrij Grinkevich)	23	107	188	2015-09-19 12:34:48		5832713
100	Movlyanov A.P. (Oct)	13	191	194	2015-09-09 14:10:52		5847017

Home
Week news

Certification

SQL exercises

HELP

Performance

Profile
References

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