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SQL exercises

October 22, 06:17 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.
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SQL exercises

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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		3555
2	Sarkis'yan G. (gennadi_s)	14	188	192	2026-10-17 13:29:17		6768
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		16636
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		31524
8	Koptel'tsev V. (selber)	18	133	183	2026-09-07 08:11:06		64686
9	Komarov A.N. (Shveda Saulya)	35	68	165	2026-08-28 13:41:52		78756
10	Koptel'tsev V. (selber)	18	133	188	2026-08-21 06:33:00		89265
11	Williams B. (BW)	36	65	252	2026-07-31 13:33:49		119084
12	Williams B. (BW)	36	65	264	2026-07-29 13:21:27		121976
13	Sigankov V.I. (vasilyvanc)	33	72	216	2026-07-23 12:13:08		130684
14	Sigankov V.I. (vasilyvanc)	33	72	241	2026-07-21 14:05:13		133452
15	Zajtsev V.S. (Sleeping)	22	116	241	2026-06-16 18:38:55		183579
16	Chernov D.V. (Kursist)	3	260	241	2026-05-23 20:49:50		218008
17	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		251672
18	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		261900
19	Vyazovetskov A.S. (alex_v)	6	243	264	2026-04-22 19:15:17		262742
20	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		293454
21	Petrov Y. (YuriPetrov)	32	76	210	2026-01-26 17:36:12		386681
22	Lukov D.R. (Gendalf)	248	0	32	2025-12-05 01:36:21		462521
23	Chebykin D. (GriGrim)	39	60	210	2025-07-11 01:12:59		674225
24	Chuvstvin M. (chuvstvinmaxim)	92	9	141	2025-01-29 11:09:56		908348
25	Chuvstvin M. (chuvstvinmaxim)	92	9	258	2025-01-21 00:01:28		920536
26	Lyubomudrov R.G. (born2tilt)	73	20	162	2024-10-10 07:48:40		1068389
27	Lyubomudrov R.G. (born2tilt)	73	20	202	2024-10-09 10:00:37		1069697
28	Frolov K.A. (Murderface_)	136	0	138	2024-09-23 14:49:59		1092448
29	Zajtsev V.S. (Sleeping)	22	116	164	2024-07-09 13:11:22		1201986
30	Slavutinskij V.V. (Vasilko)	457	0	5	2024-04-22 17:26:35		1314051
31	Slavutinskij V.V. (Vasilko)	457	0	7	2024-04-22 17:26:21		1314051
32	Williams B. (BW)	36	65	141	2024-04-02 11:30:28		1343207
33	Kukushkin S.A. (smog)	16	151	194	2024-03-15 01:29:39		1369728
34	Latyntsev N.G. (aks_nsk)	54	35	253	2024-03-05 14:17:51		1383360
35	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1449402
36	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1452716
37	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1455106
38	Nikolaenko A.V. (Shadow77)	82	14	135	2023-12-24 02:07:10		1487770
39	Boiko D. (Angellore)	9	231	262	2023-11-17 19:04:36		1540033
40	Rudikov E. (cubie)	137	0	138	2023-10-31 17:27:54		1564610
41	Shkarednyj I.N. (Gosha)	37	64	198	2023-03-25 21:10:27		1881187
42	Latyntsev N.G. (aks_nsk)	54	35	255	2023-01-12 16:01:39		1985176
43	Koptel'tsev V. (selber)	18	133	237	2022-11-06 21:16:51		2081341
44	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		2120549
45	Lukov D.R. (Gendalf)	248	0	90	2022-07-21 11:18:50		2237459
46	Pavlov A.V. (Anton)	59	29	141	2022-04-10 16:17:39		2384040
47	Sigankov V.I. (vasilyvanc)	33	72	161	2021-10-17 20:21:01		2635797
48	Fedevych V.I. (labuch_fedev)	38	63	221	2021-07-20 17:09:05		2764149
49	Pusev D.V. (Pusev_Denis)	19	132	234	2021-04-18 09:55:08		2898502
50	Kukushkin S.A. (smog)	16	151	12	2021-03-20 02:48:36		2940689
51	Pusev D.V. (Pusev_Denis)	19	132	159	2021-03-17 12:21:10		2944436
52	Kozharinov A. (bubala)	214	0	10	2020-09-30 09:55:07		3186502
53	Samarin A. (not.yet.sql.master)	148	0	112	2020-08-14 15:12:10		3253865
54	Koptel'tsev V. (selber)	18	133	259	2020-06-24 00:22:07		3328195
55	Samarin A. (not.yet.sql.master)	148	0	138	2020-05-09 21:48:04		3393150
56	Karasyova N.V. (vlksm)	10	223	230	2020-05-04 08:57:25		3401120
57	Fedevych V.I. (labuch_fedev)	38	63	226	2020-04-06 22:22:48		3440635
58	Pusev D.V. (Pusev_Denis)	19	132	184	2020-03-21 10:55:32		3464362
59	Fokin A. (Vizitor )	44	50	263	2019-08-18 21:46:14		3774751
60	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3802033
61	Romanov K.Yu. (kostik)	313	0	12	2019-07-25 08:42:10		3810095
62	Kordyum A. (alko58)	233	0	12	2019-07-12 15:58:52		3828379
63	Pavlov A.V. (Anton)	59	29	168	2019-06-12 01:20:21		3872457
64	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		4012432
65	Kurochkin P.A. (qwrqwr)	12	209	227	2018-12-28 14:37:25		4110700
66	Grishunin M.F. (MikhailFG)	90	10	144	2018-12-26 09:36:27		4113881
67	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4256072
68	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4316619
69	Voevutskij S.A. (SergLK)	220	0	45	2018-07-01 13:19:14		4369978
70	Zyrin V.E. (Vezyr)	553	0	29	2018-05-29 14:14:19		4417443
71	Chebykin D. (GriGrim)	39	60	228	2018-03-26 15:47:45		4509510
72	Shkarednyj I.N. (Gosha)	37	64	151	2018-03-23 22:38:32		4513419
73	Boiko D. (Angellore)	9	231	229	2018-03-23 21:19:51		4513498
74	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4536127
75	Shkarednyj I.N. (Gosha)	37	64	147	2018-02-26 08:13:30		4550284
76	F (uff)	66	23	95	2018-01-22 15:57:03		4600221
77	Aliev R. (y4nzi)	27	93	259	2017-12-17 18:48:39		4651889
78	Kordyum A. (alko58)	233	0	101	2017-11-21 18:18:43		4689359
79	Zajtsev V.S. (Sleeping)	22	116	190	2017-11-20 12:57:31		4691120
80	Aliev R. (y4nzi)	27	93	257	2017-11-19 19:09:17		4692188
81	Aliev R. (y4nzi)	27	93	255	2017-10-24 14:34:21		4729903
82	Kukushkin S.A. (smog)	16	151	171	2017-10-05 18:37:27		4757020
83	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4790083
84	Grinkevich D.L. (Dmitrij Grinkevich)	23	107	115	2017-07-21 14:09:37		4866728
85	Bezhaev A.Yu. (Baser)	8	234	220	2017-06-19 06:24:54		4913273
86	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4917422
87	F (uff)	66	23	185	2017-06-01 10:27:49		4938950
88	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4978823
89	Movlyanov A.P. (Oct)	13	191	218	2017-03-22 18:23:50		5040714
90	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5275617
91	Sysoev A.V. (Sysa)	53	37	165	2016-09-16 00:07:24		5311090
92	Sysoev A.V. (Sysa)	53	37	168	2016-07-22 23:44:07		5390313
93	Karasyova N.V. (vlksm)	10	223	263	2016-04-23 11:28:43		5520649
94	Titovskij P.S. (kli3ma)	46	45	164	2016-03-25 05:49:30		5562748
95	Sivoglazov M.A. (Gaizenberg)	70	22	127	2015-11-28 14:08:52		5732169
96	Maslyaev V.S. (Velmont)	94	9	170	2015-11-06 14:01:20		5763856
97	Sivoglazov M.A. (Gaizenberg)	70	22	261	2015-10-13 23:22:26		5797855
98	Fomichev A.V. (Fomichev)	200	0	101	2015-10-07 11:21:04		5807217
99	Grinkevich D.L. (Dmitrij Grinkevich)	23	107	188	2015-09-19 12:34:48		5833063
100	Movlyanov A.P. (Oct)	13	191	194	2015-09-09 14:10:52		5847367

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