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SQL exercises

March 11, 16:42 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: 15400

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Koptel'tsev V. (selber)	20	122	179	2026-02-21 19:34:16	2026-03-09 22:57:01	23243
2	Sarkis'yan G. (gennadi_s)	15	153	194	2026-02-10 15:42:58	2026-02-26 10:15:00	22712
3	Polyakov V.M. (rock_4)	133	0	138	2026-02-20 17:03:21		27340
4	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		63307
5	Lukov D.R. (Gendalf)	244	0	32	2025-12-05 01:36:21		139147
6	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		350850
7	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		472570
8	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		554725
9	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		584973
10	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		597161
11	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		745014
12	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		746322
13	Frolov K.A. (Murderface_)	134	0	138	2024-09-23 14:49:59		769073
14	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		878612
15	Slavutinskij V.V. (Vasilko)	453	0	5	2024-04-22 17:26:35		990676
16	Slavutinskij V.V. (Vasilko)	453	0	7	2024-04-22 17:26:21		990677
17	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1019832
18	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1046353
19	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		1059985
20	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1126027
21	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1129341
22	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1131731
23	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1164396
24	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1216658
25	Rudikov E. (cubie)	135	0	138	2023-10-31 17:27:54		1241235
26	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1523823
27	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1557812
28	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1661801
29	Koptel'tsev V. (selber)	20	122	237	2022-11-06 21:16:51		1757966
30	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1797175
31	Lukov D.R. (Gendalf)	244	0	90	2022-07-21 11:18:50		1914084
32	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2060665
33	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2312422
34	Fedevych V.I. (labuch_fedev)	37	65	221	2021-07-20 17:09:05		2440774
35	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2575128
36	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2617314
37	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2621062
38	Kozharinov A. (bubala)	210	0	10	2020-09-30 09:55:07		2863128
39	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		2930491
40	Koptel'tsev V. (selber)	20	122	259	2020-06-24 00:22:07		3004821
41	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		3069775
42	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		3077745
43	Fedevych V.I. (labuch_fedev)	37	65	226	2020-04-06 22:22:48		3117260
44	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3140987
45	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3451377
46	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3478659
47	Romanov K.Yu. (kostik)	311	0	12	2019-07-25 08:42:10		3486721
48	Kordyum A. (alko58)	227	0	12	2019-07-12 15:58:52		3505004
49	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3549083
50	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3689058
51	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3787325
52	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3790506
53	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3932697
54	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3993244
55	Voevutskij S.A. (SergLK)	216	0	45	2018-07-01 13:19:14		4046604
56	Zyrin V.E. (Vezyr)	544	0	29	2018-05-29 14:14:19		4094069
57	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		4186135
58	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4190044
59	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4190123
60	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4212753
61	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4226909
62	F (uff)	65	25	95	2018-01-22 15:57:03		4276846
63	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4328514
64	Kordyum A. (alko58)	227	0	101	2017-11-21 18:18:43		4365984
65	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4367745
66	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4368814
67	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4406529
68	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4433645
69	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4466708
70	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4543353
71	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4589898
72	Vorob'ev E.V. (Johnnymnemonic)	161	0	138	2017-06-16 09:15:49		4594047
73	F (uff)	65	25	185	2017-06-01 10:27:49		4615575
74	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4655448
75	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4717339
76	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4952243
77	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4987715
78	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		5066939
79	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5197274
80	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5239373
81	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5408794
82	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5440482
83	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5474480
84	Fomichev A.V. (Fomichev)	198	0	101	2015-10-07 11:21:04		5483842
85	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5509688
86	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5523992
87	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5525678
88	Varenikov D.M. (Dmitriy Varenikov)	19	128	263	2015-08-31 08:35:37		5537287
89	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5540858
90	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5544189
91	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5587875
92	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5589142
93	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5597704
94	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5607434
95	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5616061
96	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5846500
97	Skorohod I. (Dracul4ik)	78	15	252	2015-01-27 11:56:41		5848126
98	Sysoev A.V. (Sysa)	49	39	143	2014-12-25 01:16:19		5896287
99	Grishin (alvigr)	79	15	185	2014-12-05 11:56:29		5924446
100	Fajnberg M.L. (burnall)	73	21	122	2014-10-31 12:46:14		5974797

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