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SQL exercises

April 19, 13:40 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: 15060

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sigankov V.I. (vasilyvanc)	33	74	24	2026-04-16 17:02:10	2026-04-16 17:20:47	19
2	Polyakov V.M. (rock_4)	94	9	152	2026-04-16 13:35:42		4325
3	Polyakov V.M. (rock_4)	94	9	162	2026-04-16 13:25:02		4335
4	Polyakov V.M. (rock_4)	94	9	146	2026-04-06 15:53:06	2026-04-15 17:22:34	13049
5	Polyakov V.M. (rock_4)	94	9	24	2026-04-14 15:22:40	2026-04-14 16:03:02	40
6	Sarkis'yan G. (gennadi_s)	15	160	198	2026-04-13 14:57:51		8562
7	Kostomarov A.V. (al29)	5	247	24	2026-04-13 13:11:46	2026-04-13 14:15:15	63
8	Kuritsyn V.N. (ValNick)	139	0	24	2026-04-11 22:13:57	2026-04-11 22:41:38	28
9	Komarov A.N. (Shveda Saulya)	38	62	159	2026-04-10 16:59:02		12761
10	Sarkis'yan G. (gennadi_s)	15	160	197	2026-04-10 12:16:57	2026-04-10 15:25:18	188
11	Komarov A.N. (Shveda Saulya)	38	62	158	2026-04-06 16:38:40	2026-04-07 00:39:10	481
12	Komarov A.N. (Shveda Saulya)	38	62	24	2026-04-06 16:13:31	2026-04-06 16:30:45	17
13	Polyakov V.M. (rock_4)	94	9	254	2026-03-25 09:58:47	2026-04-06 15:22:00	17603
14	Sarkis'yan G. (gennadi_s)	15	160	196	2026-04-04 14:52:32	2026-04-06 14:56:09	2884
15	Polyakov V.M. (rock_4)	94	9	148	2026-04-01 11:23:28		26057
16	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		119284
17	Lukov D.R. (Gendalf)	245	0	32	2025-12-05 01:36:21		195124
18	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		406827
19	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		528548
20	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		610702
21	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		640950
22	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		653139
23	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		800992
24	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		802300
25	Frolov K.A. (Murderface_)	134	0	138	2024-09-23 14:49:59		825050
26	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		934589
27	Slavutinskij V.V. (Vasilko)	454	0	5	2024-04-22 17:26:35		1046654
28	Slavutinskij V.V. (Vasilko)	454	0	7	2024-04-22 17:26:21		1046654
29	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1075810
30	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1102331
31	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		1115962
32	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1182005
33	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1185319
34	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1187708
35	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1220373
36	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1272636
37	Rudikov E. (cubie)	135	0	138	2023-10-31 17:27:54		1297212
38	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1613790
39	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1717779
40	Koptel'tsev V. (selber)	20	122	237	2022-11-06 21:16:51		1813943
41	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		1853152
42	Lukov D.R. (Gendalf)	245	0	90	2022-07-21 11:18:50		1970061
43	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2116643
44	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2368399
45	Fedevych V.I. (labuch_fedev)	37	65	221	2021-07-20 17:09:05		2496751
46	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2631105
47	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2673292
48	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2677039
49	Kozharinov A. (bubala)	211	0	10	2020-09-30 09:55:07		2919105
50	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		2986468
51	Koptel'tsev V. (selber)	20	122	259	2020-06-24 00:22:07		3060798
52	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		3125752
53	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		3133723
54	Fedevych V.I. (labuch_fedev)	37	65	226	2020-04-06 22:22:48		3173238
55	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3196965
56	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3507354
57	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3534636
58	Romanov K.Yu. (kostik)	311	0	12	2019-07-25 08:42:10		3542698
59	Kordyum A. (alko58)	229	0	12	2019-07-12 15:58:52		3560981
60	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3605060
61	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3745035
62	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3843303
63	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3846484
64	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3988675
65	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		4049222
66	Voevutskij S.A. (SergLK)	217	0	45	2018-07-01 13:19:14		4102581
67	Zyrin V.E. (Vezyr)	546	0	29	2018-05-29 14:14:19		4150046
68	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4242113
69	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4246022
70	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4246100
71	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4268730
72	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4282887
73	F (uff)	65	25	95	2018-01-22 15:57:03		4332823
74	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4384492
75	Kordyum A. (alko58)	229	0	101	2017-11-21 18:18:43		4421962
76	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4423723
77	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4424791
78	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4462506
79	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4489623
80	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4522686
81	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4599331
82	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4645875
83	Vorob'ev E.V. (Johnnymnemonic)	162	0	138	2017-06-16 09:15:49		4650025
84	F (uff)	65	25	185	2017-06-01 10:27:49		4671553
85	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4711425
86	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4773316
87	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		5008220
88	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		5043693
89	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		5122916
90	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5253252
91	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5295351
92	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5464771
93	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5496459
94	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5530458
95	Fomichev A.V. (Fomichev)	199	0	101	2015-10-07 11:21:04		5539819
96	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5565666
97	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5579969
98	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5581655
99	Varenikov D.M. (Dmitriy Varenikov)	19	128	263	2015-08-31 08:35:37		5593265
100	Chebykin D. (GriGrim)	39	62	263	2015-08-28 21:04:30		5596836

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