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SQL exercises

August 03, 04:34 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: 15138

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Koptel'tsev V. (selber)	19	132	198	2026-07-12 02:54:38	2026-07-31 20:31:37	28417
2	Williams B. (BW)	35	67	252	2026-07-31 13:33:49		3780
3	Williams B. (BW)	35	67	236	2026-07-29 13:21:56	2026-07-31 13:32:08	2890
4	Vyazovetskov A.S. (alex_v)	6	245	181	2026-07-29 14:43:59	2026-07-30 18:38:40	1675
5	Williams B. (BW)	35	67	264	2026-07-29 13:21:27		6673
6	Williams B. (BW)	35	67	308	2026-07-23 14:59:30	2026-07-29 13:19:06	8540
7	Sarkis'yan G. (gennadi_s)	15	176	203	2026-07-28 14:11:50	2026-07-28 15:38:56	87
8	Filippkin D.V. (_dimon_)	3	259	264	2026-07-23 15:54:45	2026-07-23 15:55:46	1
9	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04	2026-07-23 15:27:06	747609
10	Sigankov V.I. (vasilyvanc)	33	74	216	2026-07-23 12:13:08		15381
11	Sigankov V.I. (vasilyvanc)	33	74	241	2026-07-21 14:05:13		18149
12	Zajtsev V.S. (Sleeping)	22	118	241	2026-06-16 18:38:55		68275
13	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		102704
14	Komarov A.N. (Shveda Saulya)	37	65	160	2026-05-09 13:24:21		123310
15	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		136369
16	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		146597
17	Vyazovetskov A.S. (alex_v)	6	245	264	2026-04-22 19:15:17		147439
18	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		178151
19	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		271378
20	Lukov D.R. (Gendalf)	247	0	32	2025-12-05 01:36:21		347218
21	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		558921
22	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		793044
23	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		805233
24	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		953086
25	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		954394
26	Frolov K.A. (Murderface_)	135	0	138	2024-09-23 14:49:59		977144
27	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1086683
28	Slavutinskij V.V. (Vasilko)	455	0	5	2024-04-22 17:26:35		1198748
29	Slavutinskij V.V. (Vasilko)	455	0	7	2024-04-22 17:26:21		1198748
30	Williams B. (BW)	35	67	141	2024-04-02 11:30:28		1227904
31	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1254425
32	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1268056
33	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1334099
34	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1337413
35	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1339802
36	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1372467
37	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1424730
38	Rudikov E. (cubie)	136	0	138	2023-10-31 17:27:54		1449306
39	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1765884
40	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1869873
41	Koptel'tsev V. (selber)	19	132	237	2022-11-06 21:16:51		1966037
42	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		2005246
43	Lukov D.R. (Gendalf)	247	0	90	2022-07-21 11:18:50		2122155
44	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2268737
45	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2520493
46	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2648845
47	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2783199
48	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2825386
49	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2829133
50	Kozharinov A. (bubala)	213	0	10	2020-09-30 09:55:07		3071199
51	Samarin A. (not.yet.sql.master)	147	0	112	2020-08-14 15:12:10		3138562
52	Koptel'tsev V. (selber)	19	132	259	2020-06-24 00:22:07		3212892
53	Samarin A. (not.yet.sql.master)	147	0	138	2020-05-09 21:48:04		3277846
54	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3285817
55	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3325332
56	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3349059
57	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3659448
58	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3686730
59	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3694792
60	Kordyum A. (alko58)	231	0	12	2019-07-12 15:58:52		3713075
61	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3757154
62	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3897129
63	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		3995397
64	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		3998578
65	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4140769
66	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4201316
67	Voevutskij S.A. (SergLK)	219	0	45	2018-07-01 13:19:14		4254675
68	Zyrin V.E. (Vezyr)	552	0	29	2018-05-29 14:14:19		4302140
69	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4394207
70	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4398116
71	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4398194
72	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4420824
73	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4434981
74	F (uff)	65	25	95	2018-01-22 15:57:03		4484917
75	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4536586
76	Kordyum A. (alko58)	231	0	101	2017-11-21 18:18:43		4574056
77	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4575817
78	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4576885
79	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4614600
80	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4641717
81	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4674780
82	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4751425
83	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4797969
84	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4802118
85	F (uff)	65	25	185	2017-06-01 10:27:49		4823646
86	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4863519
87	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4925410
88	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5160314
89	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5195787
90	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5275010
91	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5405346
92	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5447445
93	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5616865
94	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5648553
95	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5682552
96	Fomichev A.V. (Fomichev)	200	0	101	2015-10-07 11:21:04		5691913
97	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5717760
98	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5732063
99	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5733749
100	Varenikov D.M. (Dmitriy Varenikov)	20	129	263	2015-08-31 08:35:37		5745359

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