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SQL exercises

July 22, 09:04 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: 15143

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sigankov V.I. (vasilyvanc)	33	74	241	2026-07-21 14:05:13		1139
2	Sarkis'yan G. (gennadi_s)	15	175	202	2026-07-19 14:34:28	2026-07-20 18:03:08	1649
3	Krasovskij E.A. (pegoopik)	1	265	242	2026-07-18 10:53:25	2026-07-18 19:12:40	499
4	Sarkis'yan G. (gennadi_s)	15	175	242	2026-07-18 13:38:46	2026-07-18 13:39:00	0
5	Timofeeva E.V. (Umrikhina)	26	96	24	2026-07-15 10:55:13	2026-07-15 11:24:36	29
6	Safronov P.A. (Paulus73)	134	0	137	2026-07-13 10:19:08	2026-07-14 00:12:15	833
7	Koptel'tsev V. (selber)	19	130	198	2026-07-12 02:54:38		14770
8	Safronov P.A. (Paulus73)	134	0	136	2026-07-10 10:15:27	2026-07-10 15:00:38	285
9	Safronov P.A. (Paulus73)	134	0	135	2026-07-09 10:47:01	2026-07-10 00:27:56	821
10	Zajtsev V.S. (Sleeping)	22	118	241	2026-06-16 18:38:55		51266
11	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		85695
12	Komarov A.N. (Shveda Saulya)	37	65	160	2026-05-09 13:24:21		106300
13	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		119359
14	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		129587
15	Vyazovetskov A.S. (alex_v)	7	241	264	2026-04-22 19:15:17		130429
16	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		161141
17	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		254368
18	Lukov D.R. (Gendalf)	247	0	32	2025-12-05 01:36:21		330208
19	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		541911
20	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		745786
21	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		776035
22	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		788223
23	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		936076
24	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		937384
25	Frolov K.A. (Murderface_)	135	0	138	2024-09-23 14:49:59		960134
26	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1069673
27	Slavutinskij V.V. (Vasilko)	455	0	5	2024-04-22 17:26:35		1181738
28	Slavutinskij V.V. (Vasilko)	455	0	7	2024-04-22 17:26:21		1181738
29	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1210894
30	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1237415
31	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1251047
32	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1317089
33	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1320403
34	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1322792
35	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1355457
36	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1407720
37	Rudikov E. (cubie)	136	0	138	2023-10-31 17:27:54		1432297
38	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1748874
39	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1852863
40	Koptel'tsev V. (selber)	19	130	237	2022-11-06 21:16:51		1949028
41	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		1988236
42	Lukov D.R. (Gendalf)	247	0	90	2022-07-21 11:18:50		2105146
43	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2251727
44	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2503483
45	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2631835
46	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2766189
47	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2808376
48	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2812123
49	Kozharinov A. (bubala)	213	0	10	2020-09-30 09:55:07		3054189
50	Samarin A. (not.yet.sql.master)	147	0	112	2020-08-14 15:12:10		3121552
51	Koptel'tsev V. (selber)	19	130	259	2020-06-24 00:22:07		3195882
52	Samarin A. (not.yet.sql.master)	147	0	138	2020-05-09 21:48:04		3260836
53	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3268807
54	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3308322
55	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3332049
56	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3642438
57	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3669720
58	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3677782
59	Kordyum A. (alko58)	231	0	12	2019-07-12 15:58:52		3696066
60	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3740144
61	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3880119
62	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		3978387
63	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		3981568
64	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4123759
65	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4184306
66	Voevutskij S.A. (SergLK)	219	0	45	2018-07-01 13:19:14		4237665
67	Zyrin V.E. (Vezyr)	552	0	29	2018-05-29 14:14:19		4285130
68	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4377197
69	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4381106
70	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4381185
71	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4403814
72	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4417971
73	F (uff)	65	25	95	2018-01-22 15:57:03		4467907
74	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4519576
75	Kordyum A. (alko58)	231	0	101	2017-11-21 18:18:43		4557046
76	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4558807
77	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4559875
78	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4597590
79	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4624707
80	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4657770
81	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4734415
82	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4780960
83	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4785109
84	F (uff)	65	25	185	2017-06-01 10:27:49		4806637
85	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4846510
86	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4908401
87	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5143304
88	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5178777
89	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5258000
90	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5388336
91	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5430435
92	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5599856
93	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5631543
94	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5665542
95	Fomichev A.V. (Fomichev)	200	0	101	2015-10-07 11:21:04		5674903
96	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5700750
97	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5715054
98	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5716740
99	Varenikov D.M. (Dmitriy Varenikov)	20	129	263	2015-08-31 08:35:37		5728349
100	Chebykin D. (GriGrim)	39	62	263	2015-08-28 21:04:30		5731920

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