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SQL exercises

September 19, 00:46 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: 15182

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	14	187	53	2026-09-18 17:50:12		417
2	Krasovskij E.A. (pegoopik)	1	266	53	2026-09-18 15:39:39	2026-09-18 15:39:44	0
3	Krasovskij E.A. (pegoopik)	1	266	303	2026-09-11 20:13:12	2026-09-11 20:13:42	1
4	Vinogradova S.M. (Tigra1)	148	0	138	2026-09-06 14:09:20	2026-09-11 10:52:12	7003
5	Sarkis'yan G. (gennadi_s)	14	187	207	2026-09-08 14:40:13	2026-09-10 12:22:30	2742
6	Koptel'tsev V. (selber)	19	133	183	2026-09-07 08:11:06		16836
7	Komarov A.N. (Shveda Saulya)	35	68	165	2026-08-28 13:41:52		30905
8	Koptel'tsev V. (selber)	19	133	188	2026-08-21 06:33:00		41414
9	Williams B. (BW)	36	67	252	2026-07-31 13:33:49		71233
10	Williams B. (BW)	36	67	264	2026-07-29 13:21:27		74125
11	Sigankov V.I. (vasilyvanc)	33	74	216	2026-07-23 12:13:08		82834
12	Sigankov V.I. (vasilyvanc)	33	74	241	2026-07-21 14:05:13		85602
13	Zajtsev V.S. (Sleeping)	22	118	241	2026-06-16 18:38:55		135728
14	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		170157
15	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		203822
16	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		214050
17	Vyazovetskov A.S. (alex_v)	6	245	264	2026-04-22 19:15:17		214892
18	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		245603
19	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		338831
20	Lukov D.R. (Gendalf)	247	0	32	2025-12-05 01:36:21		414671
21	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		626374
22	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		860497
23	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		872685
24	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		1020538
25	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		1021846
26	Frolov K.A. (Murderface_)	135	0	138	2024-09-23 14:49:59		1044597
27	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1154136
28	Slavutinskij V.V. (Vasilko)	456	0	5	2024-04-22 17:26:35		1266200
29	Slavutinskij V.V. (Vasilko)	456	0	7	2024-04-22 17:26:21		1266201
30	Williams B. (BW)	36	67	141	2024-04-02 11:30:28		1295356
31	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1321877
32	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1335509
33	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1401551
34	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1404865
35	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1407255
36	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1439920
37	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1492182
38	Rudikov E. (cubie)	136	0	138	2023-10-31 17:27:54		1516759
39	Shkarednyj I.N. (Gosha)	37	66	198	2023-03-25 21:10:27		1833336
40	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1937325
41	Koptel'tsev V. (selber)	19	133	237	2022-11-06 21:16:51		2033490
42	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		2072699
43	Lukov D.R. (Gendalf)	247	0	90	2022-07-21 11:18:50		2189608
44	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2336189
45	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2587946
46	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2716298
47	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2850652
48	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2892838
49	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2896586
50	Kozharinov A. (bubala)	213	0	10	2020-09-30 09:55:07		3138652
51	Samarin A. (not.yet.sql.master)	147	0	112	2020-08-14 15:12:10		3206015
52	Koptel'tsev V. (selber)	19	133	259	2020-06-24 00:22:07		3280345
53	Samarin A. (not.yet.sql.master)	147	0	138	2020-05-09 21:48:04		3345299
54	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3353269
55	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3392784
56	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3416511
57	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3726901
58	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3754183
59	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3762245
60	Kordyum A. (alko58)	231	0	12	2019-07-12 15:58:52		3780528
61	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3824607
62	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3964582
63	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		4062849
64	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		4066030
65	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4208221
66	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4268768
67	Voevutskij S.A. (SergLK)	219	0	45	2018-07-01 13:19:14		4322128
68	Zyrin V.E. (Vezyr)	553	0	29	2018-05-29 14:14:19		4369593
69	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4461659
70	Shkarednyj I.N. (Gosha)	37	66	151	2018-03-23 22:38:32		4465568
71	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4465647
72	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4488277
73	Shkarednyj I.N. (Gosha)	37	66	147	2018-02-26 08:13:30		4502433
74	F (uff)	65	25	95	2018-01-22 15:57:03		4552370
75	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4604038
76	Kordyum A. (alko58)	231	0	101	2017-11-21 18:18:43		4641508
77	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4643269
78	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4644338
79	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4682053
80	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4709169
81	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4742232
82	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4818877
83	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4865422
84	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4869571
85	F (uff)	65	25	185	2017-06-01 10:27:49		4891099
86	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4930972
87	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4992863
88	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5227767
89	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5263239
90	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5342463
91	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5472798
92	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5514897
93	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5684318
94	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5716006
95	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5750004
96	Fomichev A.V. (Fomichev)	200	0	101	2015-10-07 11:21:04		5759366
97	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5785212
98	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5799516
99	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5801202
100	Varenikov D.M. (Dmitriy Varenikov)	20	130	263	2015-08-31 08:35:37		5812811

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