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SQL exercises

December 09, 17:00 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: 15371

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Kostomarov A.V. (al29)	5	247	32	2025-12-08 12:39:14	2025-12-09 14:51:32	1572
2	Petrov Y. (YuriPetrov)	37	64	32	2025-12-09 02:20:04	2025-12-09 03:54:09	94
3	Petrov Y. (YuriPetrov)	37	64	5	2025-12-08 14:40:28	2025-12-08 15:14:01	34
4	Kostomarov A.V. (al29)	5	247	5	2025-12-05 14:04:47	2025-12-08 10:54:29	4130
5	Lukov D.R. (Gendalf)	241	0	32	2025-12-05 01:36:21		6684
6	Sarkis'yan G. (gennadi_s)	18	131	188	2025-11-30 13:49:15		13151
7	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		218388
8	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		340108
9	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		414164
10	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		422263
11	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		452511
12	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		464699
13	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		612552
14	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		613860
15	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		636611
16	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		664051
17	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		746149
18	Slavutinskij V.V. (Vasilko)	448	0	5	2024-04-22 17:26:35		858214
19	Slavutinskij V.V. (Vasilko)	448	0	7	2024-04-22 17:26:21		858214
20	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		887370
21	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		913891
22	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		927523
23	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		993565
24	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		996879
25	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		999269
26	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1031934
27	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		1077109
28	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1084196
29	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1108773
30	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1353805
31	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1391360
32	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1425350
33	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1529339
34	Koptel'tsev V. (selber)	21	116	237	2022-11-06 21:16:51		1625504
35	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1664712
36	Lukov D.R. (Gendalf)	241	0	90	2022-07-21 11:18:50		1781622
37	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1928203
38	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2179960
39	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2308312
40	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2442666
41	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2484852
42	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2488600
43	Kozharinov A. (bubala)	207	0	10	2020-09-30 09:55:07		2730666
44	Samarin A. (not.yet.sql.master)	143	0	112	2020-08-14 15:12:10		2798029
45	Koptel'tsev V. (selber)	21	116	259	2020-06-24 00:22:07		2872359
46	Samarin A. (not.yet.sql.master)	143	0	138	2020-05-09 21:48:04		2937313
47	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2945283
48	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2984798
49	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		3008525
50	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3318914
51	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3346197
52	Romanov K.Yu. (kostik)	307	0	12	2019-07-25 08:42:10		3354259
53	Kordyum A. (alko58)	225	0	12	2019-07-12 15:58:52		3372542
54	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3416620
55	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3556595
56	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3654863
57	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3658044
58	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3800235
59	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3860782
60	Voevutskij S.A. (SergLK)	214	0	45	2018-07-01 13:19:14		3914141
61	Zyrin V.E. (Vezyr)	540	0	29	2018-05-29 14:14:19		3961606
62	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		4053673
63	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		4057582
64	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4057661
65	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4080290
66	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		4094447
67	F (uff)	65	25	95	2018-01-22 15:57:03		4144384
68	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4196052
69	Kordyum A. (alko58)	225	0	101	2017-11-21 18:18:43		4233522
70	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4235283
71	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4236351
72	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4274066
73	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4301183
74	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4334246
75	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4410891
76	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4457436
77	Vorob'ev E.V. (Johnnymnemonic)	161	0	138	2017-06-16 09:15:49		4461585
78	F (uff)	65	25	185	2017-06-01 10:27:49		4483113
79	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4522986
80	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4584877
81	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4819780
82	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4855253
83	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4934477
84	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5064812
85	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5106911
86	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5276332
87	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5308019
88	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5342018
89	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5351380
90	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5377226
91	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5391530
92	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5393216
93	Varenikov D.M. (Dmitriy Varenikov)	19	128	263	2015-08-31 08:35:37		5404825
94	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5408396
95	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5411727
96	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5455413
97	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5456680
98	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5465242
99	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5474972
100	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5483599

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