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SQL exercises

September 20, 21:13 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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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: 15185

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Koptel'tsev V. (selber)	19	133	53	2026-09-20 05:35:11		938
2	Sarkis'yan G. (gennadi_s)	14	187	53	2026-09-18 17:50:12	2026-09-19 18:45:38	1495
3	Krasovskij E.A. (pegoopik)	1	266	53	2026-09-18 15:39:39	2026-09-18 15:39:44	0
4	Krasovskij E.A. (pegoopik)	1	266	303	2026-09-11 20:13:12	2026-09-11 20:13:42	1
5	Vinogradova S.M. (Tigra1)	148	0	138	2026-09-06 14:09:20	2026-09-11 10:52:12	7003
6	Sarkis'yan G. (gennadi_s)	14	187	207	2026-09-08 14:40:13	2026-09-10 12:22:30	2742
7	Koptel'tsev V. (selber)	19	133	183	2026-09-07 08:11:06		19502
8	Komarov A.N. (Shveda Saulya)	35	68	165	2026-08-28 13:41:52		33571
9	Koptel'tsev V. (selber)	19	133	188	2026-08-21 06:33:00		44080
10	Williams B. (BW)	36	67	252	2026-07-31 13:33:49		73899
11	Williams B. (BW)	36	67	264	2026-07-29 13:21:27		76792
12	Sigankov V.I. (vasilyvanc)	33	74	216	2026-07-23 12:13:08		85500
13	Sigankov V.I. (vasilyvanc)	33	74	241	2026-07-21 14:05:13		88268
14	Zajtsev V.S. (Sleeping)	22	118	241	2026-06-16 18:38:55		138394
15	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		172823
16	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		206488
17	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		216716
18	Vyazovetskov A.S. (alex_v)	6	245	264	2026-04-22 19:15:17		217558
19	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		248270
20	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		341497
21	Lukov D.R. (Gendalf)	247	0	32	2025-12-05 01:36:21		417337
22	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		629040
23	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		863163
24	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		875352
25	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		1023204
26	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		1024512
27	Frolov K.A. (Murderface_)	135	0	138	2024-09-23 14:49:59		1047263
28	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1156802
29	Slavutinskij V.V. (Vasilko)	456	0	5	2024-04-22 17:26:35		1268867
30	Slavutinskij V.V. (Vasilko)	456	0	7	2024-04-22 17:26:21		1268867
31	Williams B. (BW)	36	67	141	2024-04-02 11:30:28		1298023
32	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1324543
33	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1338175
34	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1404218
35	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1407531
36	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1409921
37	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1442586
38	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1494848
39	Rudikov E. (cubie)	136	0	138	2023-10-31 17:27:54		1519425
40	Shkarednyj I.N. (Gosha)	37	66	198	2023-03-25 21:10:27		1836003
41	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1939991
42	Koptel'tsev V. (selber)	19	133	237	2022-11-06 21:16:51		2036156
43	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		2075365
44	Lukov D.R. (Gendalf)	247	0	90	2022-07-21 11:18:50		2192274
45	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2338855
46	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2590612
47	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2718964
48	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2853318
49	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2895504
50	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2899252
51	Kozharinov A. (bubala)	213	0	10	2020-09-30 09:55:07		3141318
52	Samarin A. (not.yet.sql.master)	147	0	112	2020-08-14 15:12:10		3208681
53	Koptel'tsev V. (selber)	19	133	259	2020-06-24 00:22:07		3283011
54	Samarin A. (not.yet.sql.master)	147	0	138	2020-05-09 21:48:04		3347965
55	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3355936
56	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3395450
57	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3419178
58	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3729567
59	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3756849
60	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3764911
61	Kordyum A. (alko58)	231	0	12	2019-07-12 15:58:52		3783194
62	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3827273
63	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3967248
64	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		4065516
65	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		4068697
66	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4210888
67	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4271435
68	Voevutskij S.A. (SergLK)	219	0	45	2018-07-01 13:19:14		4324794
69	Zyrin V.E. (Vezyr)	553	0	29	2018-05-29 14:14:19		4372259
70	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4464325
71	Shkarednyj I.N. (Gosha)	37	66	151	2018-03-23 22:38:32		4468235
72	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4468313
73	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4490943
74	Shkarednyj I.N. (Gosha)	37	66	147	2018-02-26 08:13:30		4505100
75	F (uff)	65	25	95	2018-01-22 15:57:03		4555036
76	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4606704
77	Kordyum A. (alko58)	231	0	101	2017-11-21 18:18:43		4644174
78	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4645936
79	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4647004
80	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4684719
81	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4711836
82	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4744899
83	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4821543
84	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4868088
85	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4872237
86	F (uff)	65	25	185	2017-06-01 10:27:49		4893765
87	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4933638
88	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4995529
89	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5230433
90	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5265906
91	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5345129
92	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5475464
93	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5517564
94	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5686984
95	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5718672
96	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5752671
97	Fomichev A.V. (Fomichev)	200	0	101	2015-10-07 11:21:04		5762032
98	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5787878
99	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5802182
100	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5803868

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