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SQL exercises

October 21, 04:52 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: 13904

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		2030
2	Sarkis'yan G. (gennadi_s)	14	188	192	2026-10-17 13:29:17		5243
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		15111
6	Sarkis'yan G. (gennadi_s)	14	188	208	2026-10-08 15:07:00	2026-10-10 12:57:58	2751
7	Safronov P.A. (Paulus73)	117	6	142	2026-10-08 11:19:23	2026-10-08 22:44:52	685
8	Safronov P.A. (Paulus73)	117	6	139	2026-10-08 10:01:07	2026-10-08 11:01:43	61
9	Kostomarov A.V. (al29)	5	245	53	2026-09-30 08:53:59		29998
10	Koptel'tsev V. (selber)	18	133	183	2026-09-07 08:11:06		63161
11	Komarov A.N. (Shveda Saulya)	35	68	165	2026-08-28 13:41:52		77230
12	Koptel'tsev V. (selber)	18	133	188	2026-08-21 06:33:00		87739
13	Williams B. (BW)	36	65	252	2026-07-31 13:33:49		117558
14	Williams B. (BW)	36	65	264	2026-07-29 13:21:27		120451
15	Sigankov V.I. (vasilyvanc)	33	72	216	2026-07-23 12:13:08		129159
16	Sigankov V.I. (vasilyvanc)	33	72	241	2026-07-21 14:05:13		131927
17	Zajtsev V.S. (Sleeping)	22	116	241	2026-06-16 18:38:55		182053
18	Chernov D.V. (Kursist)	3	260	241	2026-05-23 20:49:50		216482
19	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		250147
20	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		260375
21	Vyazovetskov A.S. (alex_v)	6	243	264	2026-04-22 19:15:17		261217
22	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		291929
23	Petrov Y. (YuriPetrov)	32	76	210	2026-01-26 17:36:12		385156
24	Lukov D.R. (Gendalf)	248	0	32	2025-12-05 01:36:21		460996
25	Chebykin D. (GriGrim)	39	60	210	2025-07-11 01:12:59		672699
26	Chuvstvin M. (chuvstvinmaxim)	92	9	141	2025-01-29 11:09:56		906822
27	Chuvstvin M. (chuvstvinmaxim)	92	9	258	2025-01-21 00:01:28		919011
28	Lyubomudrov R.G. (born2tilt)	73	20	162	2024-10-10 07:48:40		1066863
29	Lyubomudrov R.G. (born2tilt)	73	20	202	2024-10-09 10:00:37		1068171
30	Frolov K.A. (Murderface_)	136	0	138	2024-09-23 14:49:59		1090922
31	Zajtsev V.S. (Sleeping)	22	116	164	2024-07-09 13:11:22		1200461
32	Slavutinskij V.V. (Vasilko)	457	0	5	2024-04-22 17:26:35		1312525
33	Slavutinskij V.V. (Vasilko)	457	0	7	2024-04-22 17:26:21		1312526
34	Williams B. (BW)	36	65	141	2024-04-02 11:30:28		1341682
35	Kukushkin S.A. (smog)	16	151	194	2024-03-15 01:29:39		1368202
36	Latyntsev N.G. (aks_nsk)	54	35	253	2024-03-05 14:17:51		1381834
37	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1447877
38	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1451190
39	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1453580
40	Nikolaenko A.V. (Shadow77)	82	14	135	2023-12-24 02:07:10		1486245
41	Boiko D. (Angellore)	9	231	262	2023-11-17 19:04:36		1538507
42	Rudikov E. (cubie)	137	0	138	2023-10-31 17:27:54		1563084
43	Shkarednyj I.N. (Gosha)	37	64	198	2023-03-25 21:10:27		1879662
44	Latyntsev N.G. (aks_nsk)	54	35	255	2023-01-12 16:01:39		1983650
45	Koptel'tsev V. (selber)	18	133	237	2022-11-06 21:16:51		2079815
46	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		2119024
47	Lukov D.R. (Gendalf)	248	0	90	2022-07-21 11:18:50		2235933
48	Pavlov A.V. (Anton)	59	29	141	2022-04-10 16:17:39		2382514
49	Sigankov V.I. (vasilyvanc)	33	72	161	2021-10-17 20:21:01		2634271
50	Fedevych V.I. (labuch_fedev)	38	63	221	2021-07-20 17:09:05		2762623
51	Pusev D.V. (Pusev_Denis)	19	132	234	2021-04-18 09:55:08		2896977
52	Kukushkin S.A. (smog)	16	151	12	2021-03-20 02:48:36		2939163
53	Pusev D.V. (Pusev_Denis)	19	132	159	2021-03-17 12:21:10		2942911
54	Kozharinov A. (bubala)	214	0	10	2020-09-30 09:55:07		3184977
55	Samarin A. (not.yet.sql.master)	148	0	112	2020-08-14 15:12:10		3252340
56	Koptel'tsev V. (selber)	18	133	259	2020-06-24 00:22:07		3326670
57	Samarin A. (not.yet.sql.master)	148	0	138	2020-05-09 21:48:04		3391624
58	Karasyova N.V. (vlksm)	10	223	230	2020-05-04 08:57:25		3399595
59	Fedevych V.I. (labuch_fedev)	38	63	226	2020-04-06 22:22:48		3439109
60	Pusev D.V. (Pusev_Denis)	19	132	184	2020-03-21 10:55:32		3462836
61	Fokin A. (Vizitor )	44	50	263	2019-08-18 21:46:14		3773226
62	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3800508
63	Romanov K.Yu. (kostik)	313	0	12	2019-07-25 08:42:10		3808570
64	Kordyum A. (alko58)	233	0	12	2019-07-12 15:58:52		3826853
65	Pavlov A.V. (Anton)	59	29	168	2019-06-12 01:20:21		3870932
66	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		4010907
67	Kurochkin P.A. (qwrqwr)	12	209	227	2018-12-28 14:37:25		4109175
68	Grishunin M.F. (MikhailFG)	90	10	144	2018-12-26 09:36:27		4112356
69	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4254547
70	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4315094
71	Voevutskij S.A. (SergLK)	220	0	45	2018-07-01 13:19:14		4368453
72	Zyrin V.E. (Vezyr)	553	0	29	2018-05-29 14:14:19		4415918
73	Chebykin D. (GriGrim)	39	60	228	2018-03-26 15:47:45		4507984
74	Shkarednyj I.N. (Gosha)	37	64	151	2018-03-23 22:38:32		4511893
75	Boiko D. (Angellore)	9	231	229	2018-03-23 21:19:51		4511972
76	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4534602
77	Shkarednyj I.N. (Gosha)	37	64	147	2018-02-26 08:13:30		4548759
78	F (uff)	66	23	95	2018-01-22 15:57:03		4598695
79	Aliev R. (y4nzi)	27	93	259	2017-12-17 18:48:39		4650363
80	Kordyum A. (alko58)	233	0	101	2017-11-21 18:18:43		4687833
81	Zajtsev V.S. (Sleeping)	22	116	190	2017-11-20 12:57:31		4689595
82	Aliev R. (y4nzi)	27	93	257	2017-11-19 19:09:17		4690663
83	Aliev R. (y4nzi)	27	93	255	2017-10-24 14:34:21		4728378
84	Kukushkin S.A. (smog)	16	151	171	2017-10-05 18:37:27		4755495
85	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4788557
86	Grinkevich D.L. (Dmitrij Grinkevich)	23	107	115	2017-07-21 14:09:37		4865202
87	Bezhaev A.Yu. (Baser)	8	234	220	2017-06-19 06:24:54		4911747
88	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4915896
89	F (uff)	66	23	185	2017-06-01 10:27:49		4937424
90	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4977297
91	Movlyanov A.P. (Oct)	13	191	218	2017-03-22 18:23:50		5039188
92	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5274092
93	Sysoev A.V. (Sysa)	53	37	165	2016-09-16 00:07:24		5309565
94	Sysoev A.V. (Sysa)	53	37	168	2016-07-22 23:44:07		5388788
95	Karasyova N.V. (vlksm)	10	223	263	2016-04-23 11:28:43		5519123
96	Titovskij P.S. (kli3ma)	46	45	164	2016-03-25 05:49:30		5561223
97	Sivoglazov M.A. (Gaizenberg)	70	22	127	2015-11-28 14:08:52		5730643
98	Maslyaev V.S. (Velmont)	94	9	170	2015-11-06 14:01:20		5762331
99	Sivoglazov M.A. (Gaizenberg)	70	22	261	2015-10-13 23:22:26		5796330
100	Fomichev A.V. (Fomichev)	200	0	101	2015-10-07 11:21:04		5805691

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