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SQL exercises

December 10, 23:12 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: 15398

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Petrov Y. (YuriPetrov)	37	64	88	2025-12-10 15:24:13	2025-12-10 15:35:04	11
2	Kostomarov A.V. (al29)	5	247	32	2025-12-08 12:39:14	2025-12-09 14:51:32	1572
3	Petrov Y. (YuriPetrov)	37	64	32	2025-12-09 02:20:04	2025-12-09 03:54:09	94
4	Petrov Y. (YuriPetrov)	37	64	5	2025-12-08 14:40:28	2025-12-08 15:14:01	34
5	Kostomarov A.V. (al29)	5	247	5	2025-12-05 14:04:47	2025-12-08 10:54:29	4130
6	Lukov D.R. (Gendalf)	241	0	32	2025-12-05 01:36:21		8497
7	Sarkis'yan G. (gennadi_s)	18	131	188	2025-11-30 13:49:15		14964
8	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		220200
9	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		341920
10	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		415976
11	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		424075
12	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		454323
13	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		466512
14	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		614364
15	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		615672
16	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		638423
17	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		665863
18	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		747962
19	Slavutinskij V.V. (Vasilko)	448	0	5	2024-04-22 17:26:35		860026
20	Slavutinskij V.V. (Vasilko)	448	0	7	2024-04-22 17:26:21		860027
21	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		889183
22	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		915703
23	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		929335
24	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		995377
25	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		998691
26	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1001081
27	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1033746
28	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		1078922
29	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1086008
30	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1110585
31	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1355617
32	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1393173
33	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1427163
34	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1531151
35	Koptel'tsev V. (selber)	21	116	237	2022-11-06 21:16:51		1627316
36	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1666525
37	Lukov D.R. (Gendalf)	241	0	90	2022-07-21 11:18:50		1783434
38	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1930015
39	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2181772
40	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2310124
41	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2444478
42	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2486664
43	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2490412
44	Kozharinov A. (bubala)	207	0	10	2020-09-30 09:55:07		2732478
45	Samarin A. (not.yet.sql.master)	143	0	112	2020-08-14 15:12:10		2799841
46	Koptel'tsev V. (selber)	21	116	259	2020-06-24 00:22:07		2874171
47	Samarin A. (not.yet.sql.master)	143	0	138	2020-05-09 21:48:04		2939125
48	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2947096
49	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2986610
50	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		3010337
51	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3320727
52	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3348009
53	Romanov K.Yu. (kostik)	307	0	12	2019-07-25 08:42:10		3356071
54	Kordyum A. (alko58)	225	0	12	2019-07-12 15:58:52		3374354
55	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3418433
56	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3558408
57	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3656676
58	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3659857
59	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3802048
60	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3862595
61	Voevutskij S.A. (SergLK)	214	0	45	2018-07-01 13:19:14		3915954
62	Zyrin V.E. (Vezyr)	540	0	29	2018-05-29 14:14:19		3963419
63	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		4055485
64	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		4059394
65	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4059473
66	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4082103
67	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		4096259
68	F (uff)	65	25	95	2018-01-22 15:57:03		4146196
69	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4197864
70	Kordyum A. (alko58)	225	0	101	2017-11-21 18:18:43		4235334
71	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4237095
72	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4238164
73	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4275879
74	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4302996
75	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4336058
76	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4412703
77	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4459248
78	Vorob'ev E.V. (Johnnymnemonic)	161	0	138	2017-06-16 09:15:49		4463397
79	F (uff)	65	25	185	2017-06-01 10:27:49		4484925
80	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4524798
81	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4586689
82	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4821593
83	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4857066
84	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4936289
85	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5066624
86	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5108723
87	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5278144
88	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5309832
89	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5343831
90	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5353192
91	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5379038
92	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5393342
93	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5395028
94	Varenikov D.M. (Dmitriy Varenikov)	19	128	263	2015-08-31 08:35:37		5406637
95	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5410208
96	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5413540
97	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5457225
98	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5458492
99	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5467054
100	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5476784

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