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SQL exercises

August 10, 07:00 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: 15142

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	15	178	205	2026-08-07 13:45:21		3915
2	Sarkis'yan G. (gennadi_s)	15	178	204	2026-08-04 12:34:26	2026-08-04 13:41:32	67
3	Koptel'tsev V. (selber)	19	133	198	2026-07-12 02:54:38	2026-07-31 20:31:37	28417
4	Williams B. (BW)	35	67	252	2026-07-31 13:33:49		14006
5	Williams B. (BW)	35	67	236	2026-07-29 13:21:56	2026-07-31 13:32:08	2890
6	Vyazovetskov A.S. (alex_v)	6	245	181	2026-07-29 14:43:59	2026-07-30 18:38:40	1675
7	Williams B. (BW)	35	67	264	2026-07-29 13:21:27		16899
8	Williams B. (BW)	35	67	308	2026-07-23 14:59:30	2026-07-29 13:19:06	8540
9	Sarkis'yan G. (gennadi_s)	15	178	203	2026-07-28 14:11:50	2026-07-28 15:38:56	87
10	Sigankov V.I. (vasilyvanc)	33	74	216	2026-07-23 12:13:08		25607
11	Sigankov V.I. (vasilyvanc)	33	74	241	2026-07-21 14:05:13		28375
12	Zajtsev V.S. (Sleeping)	22	118	241	2026-06-16 18:38:55		78501
13	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		112930
14	Komarov A.N. (Shveda Saulya)	37	65	160	2026-05-09 13:24:21		133536
15	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		146595
16	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		156823
17	Vyazovetskov A.S. (alex_v)	6	245	264	2026-04-22 19:15:17		157665
18	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		188377
19	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		281604
20	Lukov D.R. (Gendalf)	247	0	32	2025-12-05 01:36:21		357444
21	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		569147
22	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		803270
23	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		815459
24	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		963312
25	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		964620
26	Frolov K.A. (Murderface_)	135	0	138	2024-09-23 14:49:59		987370
27	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1096909
28	Slavutinskij V.V. (Vasilko)	455	0	5	2024-04-22 17:26:35		1208974
29	Slavutinskij V.V. (Vasilko)	455	0	7	2024-04-22 17:26:21		1208974
30	Williams B. (BW)	35	67	141	2024-04-02 11:30:28		1238130
31	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1264651
32	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1278282
33	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1344325
34	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1347639
35	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1350028
36	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1382693
37	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1434956
38	Rudikov E. (cubie)	136	0	138	2023-10-31 17:27:54		1459532
39	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1776110
40	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1880099
41	Koptel'tsev V. (selber)	19	133	237	2022-11-06 21:16:51		1976263
42	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		2015472
43	Lukov D.R. (Gendalf)	247	0	90	2022-07-21 11:18:50		2132381
44	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2278963
45	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2530719
46	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2659071
47	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2793425
48	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2835612
49	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2839359
50	Kozharinov A. (bubala)	213	0	10	2020-09-30 09:55:07		3081425
51	Samarin A. (not.yet.sql.master)	147	0	112	2020-08-14 15:12:10		3148788
52	Koptel'tsev V. (selber)	19	133	259	2020-06-24 00:22:07		3223118
53	Samarin A. (not.yet.sql.master)	147	0	138	2020-05-09 21:48:04		3288072
54	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3296043
55	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3335557
56	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3359285
57	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3669674
58	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3696956
59	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3705018
60	Kordyum A. (alko58)	231	0	12	2019-07-12 15:58:52		3723301
61	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3767380
62	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3907355
63	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		4005623
64	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		4008804
65	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4150995
66	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4211542
67	Voevutskij S.A. (SergLK)	219	0	45	2018-07-01 13:19:14		4264901
68	Zyrin V.E. (Vezyr)	552	0	29	2018-05-29 14:14:19		4312366
69	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4404432
70	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4408342
71	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4408420
72	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4431050
73	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4445207
74	F (uff)	65	25	95	2018-01-22 15:57:03		4495143
75	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4546812
76	Kordyum A. (alko58)	231	0	101	2017-11-21 18:18:43		4584281
77	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4586043
78	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4587111
79	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4624826
80	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4651943
81	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4685006
82	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4761651
83	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4808195
84	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4812344
85	F (uff)	65	25	185	2017-06-01 10:27:49		4833872
86	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4873745
87	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4935636
88	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5170540
89	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5206013
90	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5285236
91	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5415571
92	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5457671
93	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5627091
94	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5658779
95	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5692778
96	Fomichev A.V. (Fomichev)	200	0	101	2015-10-07 11:21:04		5702139
97	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5727985
98	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5742289
99	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5743975
100	Varenikov D.M. (Dmitriy Varenikov)	20	130	263	2015-08-31 08:35:37		5755585

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