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SQL exercises

December 19, 04:22 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: 15361

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Petrov Y. (YuriPetrov)	36	65	236	2025-12-19 00:26:50	2025-12-19 01:32:46	66
2	Kostomarov A.V. (al29)	5	247	88	2025-12-16 13:08:02	2025-12-16 14:28:09	80
3	Sarkis'yan G. (gennadi_s)	17	134	188	2025-11-30 13:49:15	2025-12-15 18:47:38	21898
4	Petrov Y. (YuriPetrov)	36	65	88	2025-12-10 15:24:13	2025-12-10 15:35:04	11
5	Kostomarov A.V. (al29)	5	247	32	2025-12-08 12:39:14	2025-12-09 14:51:32	1572
6	Petrov Y. (YuriPetrov)	36	65	32	2025-12-09 02:20:04	2025-12-09 03:54:09	94
7	Petrov Y. (YuriPetrov)	36	65	5	2025-12-08 14:40:28	2025-12-08 15:14:01	34
8	Kostomarov A.V. (al29)	5	247	5	2025-12-05 14:04:47	2025-12-08 10:54:29	4130
9	Lukov D.R. (Gendalf)	242	0	32	2025-12-05 01:36:21		20326
10	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		232030
11	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		353750
12	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		427806
13	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		435905
14	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		466153
15	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		478341
16	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		626194
17	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		627502
18	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		650253
19	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		677693
20	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		759791
21	Slavutinskij V.V. (Vasilko)	448	0	5	2024-04-22 17:26:35		871856
22	Slavutinskij V.V. (Vasilko)	448	0	7	2024-04-22 17:26:21		871856
23	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		901012
24	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		927533
25	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		941165
26	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1007207
27	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1010521
28	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1012911
29	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1045576
30	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		1090751
31	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1097838
32	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1122415
33	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1367447
34	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1405003
35	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1438992
36	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1542981
37	Koptel'tsev V. (selber)	21	116	237	2022-11-06 21:16:51		1639146
38	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1678354
39	Lukov D.R. (Gendalf)	242	0	90	2022-07-21 11:18:50		1795264
40	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1941845
41	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2193602
42	Fedevych V.I. (labuch_fedev)	37	65	221	2021-07-20 17:09:05		2321954
43	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2456308
44	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2498494
45	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2502242
46	Kozharinov A. (bubala)	207	0	10	2020-09-30 09:55:07		2744308
47	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		2811671
48	Koptel'tsev V. (selber)	21	116	259	2020-06-24 00:22:07		2886001
49	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		2950955
50	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2958925
51	Fedevych V.I. (labuch_fedev)	37	65	226	2020-04-06 22:22:48		2998440
52	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3022167
53	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3332557
54	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3359839
55	Romanov K.Yu. (kostik)	307	0	12	2019-07-25 08:42:10		3367901
56	Kordyum A. (alko58)	225	0	12	2019-07-12 15:58:52		3386184
57	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3430262
58	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3570238
59	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3668505
60	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3671686
61	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3813877
62	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3874424
63	Voevutskij S.A. (SergLK)	214	0	45	2018-07-01 13:19:14		3927784
64	Zyrin V.E. (Vezyr)	540	0	29	2018-05-29 14:14:19		3975248
65	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		4067315
66	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		4071224
67	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4071303
68	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4093932
69	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		4108089
70	F (uff)	65	25	95	2018-01-22 15:57:03		4158026
71	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4209694
72	Kordyum A. (alko58)	225	0	101	2017-11-21 18:18:43		4247164
73	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4248925
74	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4249994
75	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4287708
76	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4314825
77	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4347888
78	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4424533
79	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4471078
80	Vorob'ev E.V. (Johnnymnemonic)	161	0	138	2017-06-16 09:15:49		4475227
81	F (uff)	65	25	185	2017-06-01 10:27:49		4496755
82	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4536628
83	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4598519
84	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4833423
85	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4868895
86	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4948119
87	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5078454
88	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5120553
89	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5289974
90	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5321661
91	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5355660
92	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5365022
93	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5390868
94	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5405172
95	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5406858
96	Varenikov D.M. (Dmitriy Varenikov)	19	128	263	2015-08-31 08:35:37		5418467
97	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5422038
98	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5425369
99	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5469055
100	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5470322

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