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SQL exercises

February 15, 08:09 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: 15358

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Komarov A.N. (Shveda Saulya)	41	56	150	2023-11-22 17:11:28	2026-02-13 01:49:19	1171238
2	Sarkis'yan G. (gennadi_s)	16	149	194	2026-02-10 15:42:58		6746
3	Sarkis'yan G. (gennadi_s)	16	149	193	2026-02-02 14:48:13	2026-02-06 14:23:09	5735
4	Komarov A.N. (Shveda Saulya)	41	56	149	2023-05-14 13:36:07	2026-02-05 21:16:28	1437580
5	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		28233
6	Lukov D.R. (Gendalf)	244	0	32	2025-12-05 01:36:21		104073
7	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		315776
8	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		437496
9	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		519651
10	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		549899
11	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		562088
12	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		709940
13	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		711248
14	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		733999
15	Komarov A.N. (Shveda Saulya)	41	56	157	2024-09-04 13:29:47		761439
16	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		843538
17	Slavutinskij V.V. (Vasilko)	452	0	5	2024-04-22 17:26:35		955602
18	Slavutinskij V.V. (Vasilko)	452	0	7	2024-04-22 17:26:21		955603
19	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		984759
20	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		1011279
21	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		1024911
22	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1090954
23	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1094267
24	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1096657
25	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1129322
26	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1181584
27	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1206161
28	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1488749
29	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1522739
30	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1626727
31	Koptel'tsev V. (selber)	21	119	237	2022-11-06 21:16:51		1722892
32	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1762101
33	Lukov D.R. (Gendalf)	244	0	90	2022-07-21 11:18:50		1879010
34	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2025591
35	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2277348
36	Fedevych V.I. (labuch_fedev)	37	65	221	2021-07-20 17:09:05		2405700
37	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2540054
38	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2582240
39	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2585988
40	Kozharinov A. (bubala)	208	0	10	2020-09-30 09:55:07		2828054
41	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		2895417
42	Koptel'tsev V. (selber)	21	119	259	2020-06-24 00:22:07		2969747
43	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		3034701
44	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		3042672
45	Fedevych V.I. (labuch_fedev)	37	65	226	2020-04-06 22:22:48		3082186
46	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3105914
47	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3416303
48	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3443585
49	Romanov K.Yu. (kostik)	309	0	12	2019-07-25 08:42:10		3451647
50	Kordyum A. (alko58)	226	0	12	2019-07-12 15:58:52		3469930
51	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3514009
52	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3653984
53	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3752252
54	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3755433
55	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3897624
56	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3958171
57	Voevutskij S.A. (SergLK)	215	0	45	2018-07-01 13:19:14		4011530
58	Zyrin V.E. (Vezyr)	543	0	29	2018-05-29 14:14:19		4058995
59	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		4151061
60	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4154971
61	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4155049
62	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4177679
63	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4191836
64	F (uff)	65	25	95	2018-01-22 15:57:03		4241772
65	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4293440
66	Kordyum A. (alko58)	226	0	101	2017-11-21 18:18:43		4330910
67	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4332672
68	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4333740
69	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4371455
70	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4398572
71	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4431635
72	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4508279
73	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4554824
74	Vorob'ev E.V. (Johnnymnemonic)	161	0	138	2017-06-16 09:15:49		4558973
75	F (uff)	65	25	185	2017-06-01 10:27:49		4580501
76	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4620374
77	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4682265
78	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4917169
79	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4952642
80	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		5031865
81	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5162200
82	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5204300
83	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5373720
84	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5405408
85	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5439407
86	Fomichev A.V. (Fomichev)	196	0	101	2015-10-07 11:21:04		5448768
87	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5474614
88	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5488918
89	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5490604
90	Varenikov D.M. (Dmitriy Varenikov)	19	128	263	2015-08-31 08:35:37		5502213
91	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5505785
92	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5509116
93	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5552801
94	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5554068
95	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5562630
96	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5572360
97	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5580987
98	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5811426
99	Skorohod I. (Dracul4ik)	78	15	252	2015-01-27 11:56:41		5813052
100	Sysoev A.V. (Sysa)	49	39	143	2014-12-25 01:16:19		5861213

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