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SQL exercises

August 08, 15:24 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: 15146

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	22	109	178	2025-08-04 14:40:56	2025-08-07 19:55:02	4634
2	Chernov D.V. (Kursist)	2	262	240	2025-07-26 20:49:03	2025-08-04 23:04:01	13095
3	Sarkis'yan G. (gennadi_s)	22	109	177	2025-07-23 13:53:32	2025-07-26 14:19:28	4346
4	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		41172
5	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		162892
6	Fomichev A.V. (Fomichev)	196	0	7	2025-02-25 02:16:37		236948
7	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		245046
8	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		275295
9	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		287483
10	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		435336
11	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		436644
12	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		459395
13	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		486835
14	Zajtsev V.S. (Sleeping)	21	112	164	2024-07-09 13:11:22		568933
15	Slavutinskij V.V. (Vasilko)	446	0	5	2024-04-22 17:26:35		680998
16	Slavutinskij V.V. (Vasilko)	446	0	7	2024-04-22 17:26:21		680998
17	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		710154
18	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		736675
19	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		750307
20	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		816349
21	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		819663
22	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		822052
23	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		854717
24	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		899893
25	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		906980
26	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		931557
27	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1176588
28	Zajtsev V.S. (Sleeping)	21	112	150	2023-04-18 11:40:16		1214144
29	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1248134
30	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1352123
31	Koptel'tsev V. (selber)	20	113	237	2022-11-06 21:16:51		1448288
32	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1487496
33	Lukov D.R. (Gendalf)	240	0	90	2022-07-21 11:18:50		1604406
34	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1750987
35	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1865037
36	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2002744
37	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2131095
38	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2265449
39	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2307636
40	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2311383
41	Kozharinov A. (bubala)	206	0	10	2020-09-30 09:55:07		2553449
42	Samarin A. (not.yet.sql.master)	140	0	112	2020-08-14 15:12:10		2620812
43	Koptel'tsev V. (selber)	20	113	259	2020-06-24 00:22:07		2695142
44	Samarin A. (not.yet.sql.master)	140	0	138	2020-05-09 21:48:04		2760096
45	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2768067
46	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2807582
47	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2831309
48	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3141698
49	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3168980
50	Romanov K.Yu. (kostik)	305	0	12	2019-07-25 08:42:10		3177042
51	Kordyum A. (alko58)	224	0	12	2019-07-12 15:58:52		3195326
52	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3239404
53	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3379379
54	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3477647
55	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3480828
56	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3623019
57	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3683566
58	Voevutskij S.A. (SergLK)	211	0	45	2018-07-01 13:19:14		3736925
59	Zyrin V.E. (Vezyr)	537	0	29	2018-05-29 14:14:19		3784390
60	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3876457
61	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3880366
62	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3880445
63	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		3903074
64	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		3917231
65	F (uff)	65	25	95	2018-01-22 15:57:03		3967167
66	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4018836
67	Kordyum A. (alko58)	224	0	101	2017-11-21 18:18:43		4056306
68	Zajtsev V.S. (Sleeping)	21	112	190	2017-11-20 12:57:31		4058067
69	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4059135
70	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4096850
71	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4123967
72	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4157030
73	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4233675
74	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4280220
75	Vorob'ev E.V. (Johnnymnemonic)	158	0	138	2017-06-16 09:15:49		4284369
76	F (uff)	65	25	185	2017-06-01 10:27:49		4305897
77	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4345770
78	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4407661
79	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4642564
80	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4678037
81	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4757260
82	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4887596
83	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		4929695
84	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5099116
85	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5130803
86	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5164802
87	Fomichev A.V. (Fomichev)	196	0	101	2015-10-07 11:21:04		5174163
88	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5200010
89	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5214314
90	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5216000
91	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		5227609
92	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5231180
93	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5234511
94	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5278197
95	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5279464
96	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5288025
97	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5297756
98	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5306382
99	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5536821
100	Skorohod I. (Dracul4ik)	78	15	252	2015-01-27 11:56:41		5538448

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