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SQL exercises

October 19, 02:38 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: 13895

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	14	188	192	2026-10-17 13:29:17		2229
2	Krasovskij E.A. (pegoopik)	1	268	192	2026-10-16 18:51:16	2026-10-16 18:51:23	0
3	Safronov P.A. (Paulus73)	117	6	140	2026-10-09 09:42:14	2026-10-15 12:25:59	8804
4	Vinogradova S.M. (Tigra1)	125	4	141	2026-10-10 17:01:15		12097
5	Sarkis'yan G. (gennadi_s)	14	188	208	2026-10-08 15:07:00	2026-10-10 12:57:58	2751
6	Safronov P.A. (Paulus73)	117	6	142	2026-10-08 11:19:23	2026-10-08 22:44:52	685
7	Safronov P.A. (Paulus73)	117	6	139	2026-10-08 10:01:07	2026-10-08 11:01:43	61
8	Safronov P.A. (Paulus73)	117	6	138	2026-10-06 09:41:15	2026-10-07 02:54:18	1033
9	Filippkin D.V. (_dimon_)	2	260	240	2026-10-05 14:13:38	2026-10-06 15:58:40	1545
10	Kostomarov A.V. (al29)	5	245	53	2026-09-30 08:53:59		26984
11	Koptel'tsev V. (selber)	18	133	183	2026-09-07 08:11:06		60147
12	Komarov A.N. (Shveda Saulya)	35	68	165	2026-08-28 13:41:52		74217
13	Koptel'tsev V. (selber)	18	133	188	2026-08-21 06:33:00		84725
14	Williams B. (BW)	36	65	252	2026-07-31 13:33:49		114545
15	Williams B. (BW)	36	65	264	2026-07-29 13:21:27		117437
16	Sigankov V.I. (vasilyvanc)	33	72	216	2026-07-23 12:13:08		126145
17	Sigankov V.I. (vasilyvanc)	33	72	241	2026-07-21 14:05:13		128913
18	Zajtsev V.S. (Sleeping)	22	116	241	2026-06-16 18:38:55		179040
19	Chernov D.V. (Kursist)	3	260	241	2026-05-23 20:49:50		213469
20	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		247133
21	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		257361
22	Vyazovetskov A.S. (alex_v)	6	243	264	2026-04-22 19:15:17		258203
23	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		288915
24	Petrov Y. (YuriPetrov)	32	76	210	2026-01-26 17:36:12		382142
25	Lukov D.R. (Gendalf)	248	0	32	2025-12-05 01:36:21		457982
26	Chebykin D. (GriGrim)	39	60	210	2025-07-11 01:12:59		669685
27	Chuvstvin M. (chuvstvinmaxim)	92	9	141	2025-01-29 11:09:56		903809
28	Chuvstvin M. (chuvstvinmaxim)	92	9	258	2025-01-21 00:01:28		915997
29	Lyubomudrov R.G. (born2tilt)	73	20	162	2024-10-10 07:48:40		1063850
30	Lyubomudrov R.G. (born2tilt)	73	20	202	2024-10-09 10:00:37		1065158
31	Frolov K.A. (Murderface_)	136	0	138	2024-09-23 14:49:59		1087908
32	Zajtsev V.S. (Sleeping)	22	116	164	2024-07-09 13:11:22		1197447
33	Slavutinskij V.V. (Vasilko)	457	0	5	2024-04-22 17:26:35		1309512
34	Slavutinskij V.V. (Vasilko)	457	0	7	2024-04-22 17:26:21		1309512
35	Williams B. (BW)	36	65	141	2024-04-02 11:30:28		1338668
36	Kukushkin S.A. (smog)	16	151	194	2024-03-15 01:29:39		1365189
37	Latyntsev N.G. (aks_nsk)	54	35	253	2024-03-05 14:17:51		1378821
38	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1444863
39	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1448177
40	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1450566
41	Nikolaenko A.V. (Shadow77)	82	14	135	2023-12-24 02:07:10		1483231
42	Boiko D. (Angellore)	9	231	262	2023-11-17 19:04:36		1535494
43	Rudikov E. (cubie)	137	0	138	2023-10-31 17:27:54		1560071
44	Shkarednyj I.N. (Gosha)	37	64	198	2023-03-25 21:10:27		1876648
45	Latyntsev N.G. (aks_nsk)	54	35	255	2023-01-12 16:01:39		1980637
46	Koptel'tsev V. (selber)	18	133	237	2022-11-06 21:16:51		2076802
47	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		2116010
48	Lukov D.R. (Gendalf)	248	0	90	2022-07-21 11:18:50		2232920
49	Pavlov A.V. (Anton)	59	29	141	2022-04-10 16:17:39		2379501
50	Sigankov V.I. (vasilyvanc)	33	72	161	2021-10-17 20:21:01		2631257
51	Fedevych V.I. (labuch_fedev)	38	63	221	2021-07-20 17:09:05		2759609
52	Pusev D.V. (Pusev_Denis)	19	132	234	2021-04-18 09:55:08		2893963
53	Kukushkin S.A. (smog)	16	151	12	2021-03-20 02:48:36		2936150
54	Pusev D.V. (Pusev_Denis)	19	132	159	2021-03-17 12:21:10		2939897
55	Kozharinov A. (bubala)	214	0	10	2020-09-30 09:55:07		3181963
56	Samarin A. (not.yet.sql.master)	148	0	112	2020-08-14 15:12:10		3249326
57	Koptel'tsev V. (selber)	18	133	259	2020-06-24 00:22:07		3323656
58	Samarin A. (not.yet.sql.master)	148	0	138	2020-05-09 21:48:04		3388610
59	Karasyova N.V. (vlksm)	10	223	230	2020-05-04 08:57:25		3396581
60	Fedevych V.I. (labuch_fedev)	38	63	226	2020-04-06 22:22:48		3436096
61	Pusev D.V. (Pusev_Denis)	19	132	184	2020-03-21 10:55:32		3459823
62	Fokin A. (Vizitor )	44	50	263	2019-08-18 21:46:14		3770212
63	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3797494
64	Romanov K.Yu. (kostik)	313	0	12	2019-07-25 08:42:10		3805556
65	Kordyum A. (alko58)	233	0	12	2019-07-12 15:58:52		3823840
66	Pavlov A.V. (Anton)	59	29	168	2019-06-12 01:20:21		3867918
67	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		4007893
68	Kurochkin P.A. (qwrqwr)	12	209	227	2018-12-28 14:37:25		4106161
69	Grishunin M.F. (MikhailFG)	90	10	144	2018-12-26 09:36:27		4109342
70	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4251533
71	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4312080
72	Voevutskij S.A. (SergLK)	220	0	45	2018-07-01 13:19:14		4365439
73	Zyrin V.E. (Vezyr)	553	0	29	2018-05-29 14:14:19		4412904
74	Chebykin D. (GriGrim)	39	60	228	2018-03-26 15:47:45		4504971
75	Shkarednyj I.N. (Gosha)	37	64	151	2018-03-23 22:38:32		4508880
76	Boiko D. (Angellore)	9	231	229	2018-03-23 21:19:51		4508959
77	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4531588
78	Shkarednyj I.N. (Gosha)	37	64	147	2018-02-26 08:13:30		4545745
79	F (uff)	66	23	95	2018-01-22 15:57:03		4595681
80	Aliev R. (y4nzi)	27	93	259	2017-12-17 18:48:39		4647350
81	Kordyum A. (alko58)	233	0	101	2017-11-21 18:18:43		4684820
82	Zajtsev V.S. (Sleeping)	22	116	190	2017-11-20 12:57:31		4686581
83	Aliev R. (y4nzi)	27	93	257	2017-11-19 19:09:17		4687649
84	Aliev R. (y4nzi)	27	93	255	2017-10-24 14:34:21		4725364
85	Kukushkin S.A. (smog)	16	151	171	2017-10-05 18:37:27		4752481
86	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4785544
87	Grinkevich D.L. (Dmitrij Grinkevich)	23	107	115	2017-07-21 14:09:37		4862189
88	Bezhaev A.Yu. (Baser)	8	234	220	2017-06-19 06:24:54		4908734
89	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4912883
90	F (uff)	66	23	185	2017-06-01 10:27:49		4934411
91	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4974284
92	Movlyanov A.P. (Oct)	13	191	218	2017-03-22 18:23:50		5036175
93	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5271078
94	Sysoev A.V. (Sysa)	53	37	165	2016-09-16 00:07:24		5306551
95	Sysoev A.V. (Sysa)	53	37	168	2016-07-22 23:44:07		5385774
96	Karasyova N.V. (vlksm)	10	223	263	2016-04-23 11:28:43		5516110
97	Titovskij P.S. (kli3ma)	46	45	164	2016-03-25 05:49:30		5558209
98	Sivoglazov M.A. (Gaizenberg)	70	22	127	2015-11-28 14:08:52		5727630
99	Maslyaev V.S. (Velmont)	94	9	170	2015-11-06 14:01:20		5759317
100	Sivoglazov M.A. (Gaizenberg)	70	22	261	2015-10-13 23:22:26		5793316

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