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SQL exercises

August 07, 15:34 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: 15156

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		109
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		10201
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		13093
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		21801
11	Sigankov V.I. (vasilyvanc)	33	74	241	2026-07-21 14:05:13		24569
12	Zajtsev V.S. (Sleeping)	22	118	241	2026-06-16 18:38:55		74695
13	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		109124
14	Komarov A.N. (Shveda Saulya)	37	65	160	2026-05-09 13:24:21		129730
15	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		142789
16	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		153017
17	Vyazovetskov A.S. (alex_v)	6	245	264	2026-04-22 19:15:17		153859
18	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		184571
19	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		277798
20	Lukov D.R. (Gendalf)	247	0	32	2025-12-05 01:36:21		353638
21	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		565341
22	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		799464
23	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		811653
24	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		959506
25	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		960814
26	Frolov K.A. (Murderface_)	135	0	138	2024-09-23 14:49:59		983564
27	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1093103
28	Slavutinskij V.V. (Vasilko)	455	0	5	2024-04-22 17:26:35		1205168
29	Slavutinskij V.V. (Vasilko)	455	0	7	2024-04-22 17:26:21		1205168
30	Williams B. (BW)	35	67	141	2024-04-02 11:30:28		1234324
31	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1260845
32	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1274476
33	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1340519
34	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1343833
35	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1346222
36	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1378887
37	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1431150
38	Rudikov E. (cubie)	136	0	138	2023-10-31 17:27:54		1455726
39	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1772304
40	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1876293
41	Koptel'tsev V. (selber)	19	133	237	2022-11-06 21:16:51		1972457
42	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		2011666
43	Lukov D.R. (Gendalf)	247	0	90	2022-07-21 11:18:50		2128575
44	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2275157
45	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2526913
46	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2655265
47	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2789619
48	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2831806
49	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2835553
50	Kozharinov A. (bubala)	213	0	10	2020-09-30 09:55:07		3077619
51	Samarin A. (not.yet.sql.master)	147	0	112	2020-08-14 15:12:10		3144982
52	Koptel'tsev V. (selber)	19	133	259	2020-06-24 00:22:07		3219312
53	Samarin A. (not.yet.sql.master)	147	0	138	2020-05-09 21:48:04		3284266
54	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3292237
55	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3331752
56	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3355479
57	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3665868
58	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3693150
59	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3701212
60	Kordyum A. (alko58)	231	0	12	2019-07-12 15:58:52		3719495
61	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3763574
62	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3903549
63	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		4001817
64	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		4004998
65	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4147189
66	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4207736
67	Voevutskij S.A. (SergLK)	219	0	45	2018-07-01 13:19:14		4261095
68	Zyrin V.E. (Vezyr)	552	0	29	2018-05-29 14:14:19		4308560
69	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4400627
70	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4404536
71	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4404614
72	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4427244
73	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4441401
74	F (uff)	65	25	95	2018-01-22 15:57:03		4491337
75	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4543006
76	Kordyum A. (alko58)	231	0	101	2017-11-21 18:18:43		4580476
77	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4582237
78	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4583305
79	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4621020
80	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4648137
81	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4681200
82	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4757845
83	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4804389
84	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4808539
85	F (uff)	65	25	185	2017-06-01 10:27:49		4830067
86	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4869939
87	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4931830
88	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5166734
89	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5202207
90	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5281430
91	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5411766
92	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5453865
93	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5623285
94	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5654973
95	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5688972
96	Fomichev A.V. (Fomichev)	200	0	101	2015-10-07 11:21:04		5698333
97	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5724180
98	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5738483
99	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5740169
100	Varenikov D.M. (Dmitriy Varenikov)	20	130	263	2015-08-31 08:35:37		5751779

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