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SQL exercises

April 18, 03:27 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: 15058

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sigankov V.I. (vasilyvanc)	33	74	24	2026-04-16 17:02:10	2026-04-16 17:20:47	19
2	Polyakov V.M. (rock_4)	94	9	152	2026-04-16 13:35:42		2272
3	Polyakov V.M. (rock_4)	94	9	162	2026-04-16 13:25:02		2283
4	Polyakov V.M. (rock_4)	94	9	146	2026-04-06 15:53:06	2026-04-15 17:22:34	13049
5	Polyakov V.M. (rock_4)	94	9	24	2026-04-14 15:22:40	2026-04-14 16:03:02	40
6	Sarkis'yan G. (gennadi_s)	15	160	198	2026-04-13 14:57:51		6510
7	Kostomarov A.V. (al29)	5	247	24	2026-04-13 13:11:46	2026-04-13 14:15:15	63
8	Kuritsyn V.N. (ValNick)	139	0	24	2026-04-11 22:13:57	2026-04-11 22:41:38	28
9	Komarov A.N. (Shveda Saulya)	38	62	159	2026-04-10 16:59:02		10709
10	Sarkis'yan G. (gennadi_s)	15	160	197	2026-04-10 12:16:57	2026-04-10 15:25:18	188
11	Komarov A.N. (Shveda Saulya)	38	62	158	2026-04-06 16:38:40	2026-04-07 00:39:10	481
12	Komarov A.N. (Shveda Saulya)	38	62	24	2026-04-06 16:13:31	2026-04-06 16:30:45	17
13	Polyakov V.M. (rock_4)	94	9	254	2026-03-25 09:58:47	2026-04-06 15:22:00	17603
14	Sarkis'yan G. (gennadi_s)	15	160	196	2026-04-04 14:52:32	2026-04-06 14:56:09	2884
15	Chernov D.V. (Kursist)	2	262	24	2026-04-05 21:27:47	2026-04-05 22:13:10	45
16	Koptel'tsev V. (selber)	20	122	24	2026-04-05 18:00:17	2026-04-05 18:20:48	21
17	Kurochkin P.A. (qwrqwr)	11	211	24	2026-04-05 13:51:41	2026-04-05 14:52:27	61
18	Polyakov V.M. (rock_4)	94	9	148	2026-04-01 11:23:28		24004
19	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		117232
20	Lukov D.R. (Gendalf)	245	0	32	2025-12-05 01:36:21		193072
21	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		404775
22	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		526495
23	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		608650
24	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		638898
25	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		651086
26	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		798939
27	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		800247
28	Frolov K.A. (Murderface_)	134	0	138	2024-09-23 14:49:59		822998
29	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		932537
30	Slavutinskij V.V. (Vasilko)	454	0	5	2024-04-22 17:26:35		1044601
31	Slavutinskij V.V. (Vasilko)	454	0	7	2024-04-22 17:26:21		1044602
32	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1073757
33	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1100278
34	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		1113910
35	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1179952
36	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1183266
37	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1185656
38	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1218321
39	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1270583
40	Rudikov E. (cubie)	135	0	138	2023-10-31 17:27:54		1295160
41	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1611737
42	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1715726
43	Koptel'tsev V. (selber)	20	122	237	2022-11-06 21:16:51		1811891
44	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		1851100
45	Lukov D.R. (Gendalf)	245	0	90	2022-07-21 11:18:50		1968009
46	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2114590
47	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2366347
48	Fedevych V.I. (labuch_fedev)	37	65	221	2021-07-20 17:09:05		2494699
49	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2629053
50	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2671239
51	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2674987
52	Kozharinov A. (bubala)	211	0	10	2020-09-30 09:55:07		2917053
53	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		2984416
54	Koptel'tsev V. (selber)	20	122	259	2020-06-24 00:22:07		3058746
55	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		3123700
56	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		3131671
57	Fedevych V.I. (labuch_fedev)	37	65	226	2020-04-06 22:22:48		3171185
58	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3194912
59	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3505302
60	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3532584
61	Romanov K.Yu. (kostik)	311	0	12	2019-07-25 08:42:10		3540646
62	Kordyum A. (alko58)	229	0	12	2019-07-12 15:58:52		3558929
63	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3603008
64	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3742983
65	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3841251
66	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3844431
67	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3986622
68	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		4047170
69	Voevutskij S.A. (SergLK)	217	0	45	2018-07-01 13:19:14		4100529
70	Zyrin V.E. (Vezyr)	546	0	29	2018-05-29 14:14:19		4147994
71	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4240060
72	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4243969
73	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4244048
74	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4266678
75	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4280834
76	F (uff)	65	25	95	2018-01-22 15:57:03		4330771
77	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4382439
78	Kordyum A. (alko58)	229	0	101	2017-11-21 18:18:43		4419909
79	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4421670
80	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4422739
81	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4460454
82	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4487570
83	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4520633
84	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4597278
85	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4643823
86	Vorob'ev E.V. (Johnnymnemonic)	162	0	138	2017-06-16 09:15:49		4647972
87	F (uff)	65	25	185	2017-06-01 10:27:49		4669500
88	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4709373
89	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4771264
90	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		5006168
91	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		5041641
92	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		5120864
93	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5251199
94	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5293298
95	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5462719
96	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5494407
97	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5528405
98	Fomichev A.V. (Fomichev)	199	0	101	2015-10-07 11:21:04		5537767
99	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5563613
100	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5577917

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