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SQL exercises

December 09, 17:11 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		6695
6	Sarkis'yan G. (gennadi_s)	18	131	188	2025-11-30 13:49:15		13162
7	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		218398
8	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		340119
9	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		414175
10	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		422273
11	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		452521
12	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		464710
13	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		612563
14	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		613871
15	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		636621
16	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		664061
17	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		746160
18	Slavutinskij V.V. (Vasilko)	448	0	5	2024-04-22 17:26:35		858225
19	Slavutinskij V.V. (Vasilko)	448	0	7	2024-04-22 17:26:21		858225
20	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		887381
21	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		913902
22	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		927533
23	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		993576
24	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		996890
25	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		999279
26	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1031944
27	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		1077120
28	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1084207
29	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1108783
30	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1353815
31	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1391371
32	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1425361
33	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1529350
34	Koptel'tsev V. (selber)	21	116	237	2022-11-06 21:16:51		1625514
35	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1664723
36	Lukov D.R. (Gendalf)	241	0	90	2022-07-21 11:18:50		1781632
37	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1928214
38	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2179970
39	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2308322
40	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2442676
41	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2484863
42	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2488610
43	Kozharinov A. (bubala)	207	0	10	2020-09-30 09:55:07		2730676
44	Samarin A. (not.yet.sql.master)	143	0	112	2020-08-14 15:12:10		2798039
45	Koptel'tsev V. (selber)	21	116	259	2020-06-24 00:22:07		2872369
46	Samarin A. (not.yet.sql.master)	143	0	138	2020-05-09 21:48:04		2937323
47	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2945294
48	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2984808
49	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		3008536
50	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3318925
51	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3346207
52	Romanov K.Yu. (kostik)	307	0	12	2019-07-25 08:42:10		3354269
53	Kordyum A. (alko58)	225	0	12	2019-07-12 15:58:52		3372552
54	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3416631
55	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3556606
56	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3654874
57	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3658055
58	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3800246
59	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3860793
60	Voevutskij S.A. (SergLK)	214	0	45	2018-07-01 13:19:14		3914152
61	Zyrin V.E. (Vezyr)	540	0	29	2018-05-29 14:14:19		3961617
62	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		4053683
63	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		4057593
64	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4057671
65	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4080301
66	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		4094458
67	F (uff)	65	25	95	2018-01-22 15:57:03		4144394
68	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4196063
69	Kordyum A. (alko58)	225	0	101	2017-11-21 18:18:43		4233532
70	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4235294
71	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4236362
72	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4274077
73	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4301194
74	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4334257
75	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4410902
76	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4457446
77	Vorob'ev E.V. (Johnnymnemonic)	161	0	138	2017-06-16 09:15:49		4461595
78	F (uff)	65	25	185	2017-06-01 10:27:49		4483123
79	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4522996
80	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4584887
81	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4819791
82	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4855264
83	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4934487
84	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5064822
85	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5106922
86	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5276342
87	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5308030
88	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5342029
89	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5351390
90	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5377236
91	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5391540
92	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5393226
93	Varenikov D.M. (Dmitriy Varenikov)	19	128	263	2015-08-31 08:35:37		5404836
94	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5408407
95	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5411738
96	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5455423
97	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5456690
98	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5465252
99	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5474982
100	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5483609

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