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SQL exercises

August 08, 16:31 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		1606
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		11698
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		14590
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		23298
11	Sigankov V.I. (vasilyvanc)	33	74	241	2026-07-21 14:05:13		26066
12	Zajtsev V.S. (Sleeping)	22	118	241	2026-06-16 18:38:55		76193
13	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		110622
14	Komarov A.N. (Shveda Saulya)	37	65	160	2026-05-09 13:24:21		131227
15	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		144286
16	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		154514
17	Vyazovetskov A.S. (alex_v)	6	245	264	2026-04-22 19:15:17		155356
18	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		186068
19	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		279295
20	Lukov D.R. (Gendalf)	247	0	32	2025-12-05 01:36:21		355135
21	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		566838
22	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		800961
23	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		813150
24	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		961003
25	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		962311
26	Frolov K.A. (Murderface_)	135	0	138	2024-09-23 14:49:59		985061
27	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1094600
28	Slavutinskij V.V. (Vasilko)	455	0	5	2024-04-22 17:26:35		1206665
29	Slavutinskij V.V. (Vasilko)	455	0	7	2024-04-22 17:26:21		1206665
30	Williams B. (BW)	35	67	141	2024-04-02 11:30:28		1235821
31	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1262342
32	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1275974
33	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1342016
34	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1345330
35	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1347719
36	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1380384
37	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1432647
38	Rudikov E. (cubie)	136	0	138	2023-10-31 17:27:54		1457224
39	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1773801
40	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1877790
41	Koptel'tsev V. (selber)	19	133	237	2022-11-06 21:16:51		1973955
42	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		2013163
43	Lukov D.R. (Gendalf)	247	0	90	2022-07-21 11:18:50		2130073
44	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2276654
45	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2528410
46	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2656762
47	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2791116
48	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2833303
49	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2837050
50	Kozharinov A. (bubala)	213	0	10	2020-09-30 09:55:07		3079116
51	Samarin A. (not.yet.sql.master)	147	0	112	2020-08-14 15:12:10		3146479
52	Koptel'tsev V. (selber)	19	133	259	2020-06-24 00:22:07		3220809
53	Samarin A. (not.yet.sql.master)	147	0	138	2020-05-09 21:48:04		3285763
54	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3293734
55	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3333249
56	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3356976
57	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3667365
58	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3694647
59	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3702709
60	Kordyum A. (alko58)	231	0	12	2019-07-12 15:58:52		3720993
61	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3765071
62	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3905046
63	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		4003314
64	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		4006495
65	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4148686
66	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4209233
67	Voevutskij S.A. (SergLK)	219	0	45	2018-07-01 13:19:14		4262592
68	Zyrin V.E. (Vezyr)	552	0	29	2018-05-29 14:14:19		4310057
69	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4402124
70	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4406033
71	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4406112
72	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4428741
73	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4442898
74	F (uff)	65	25	95	2018-01-22 15:57:03		4492834
75	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4544503
76	Kordyum A. (alko58)	231	0	101	2017-11-21 18:18:43		4581973
77	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4583734
78	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4584802
79	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4622517
80	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4649634
81	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4682697
82	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4759342
83	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4805887
84	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4810036
85	F (uff)	65	25	185	2017-06-01 10:27:49		4831564
86	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4871437
87	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4933328
88	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5168231
89	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5203704
90	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5282927
91	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5413263
92	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5455362
93	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5624783
94	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5656470
95	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5690469
96	Fomichev A.V. (Fomichev)	200	0	101	2015-10-07 11:21:04		5699830
97	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5725677
98	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5739981
99	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5741667
100	Varenikov D.M. (Dmitriy Varenikov)	20	130	263	2015-08-31 08:35:37		5753276

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