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SQL exercises

February 25, 17:04 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: 15434

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Koptel'tsev V. (selber)	21	119	179	2026-02-21 19:34:16		5611
2	Polyakov V.M. (rock_4)	134	0	138	2026-02-20 17:03:21		7202
3	Polyakov V.M. (rock_4)	134	0	137	2026-02-13 11:01:59	2026-02-20 16:48:54	10427
4	Komarov A.N. (Shveda Saulya)	41	59	157	2024-09-04 13:29:47	2026-02-19 14:50:22	767601
5	Polyakov V.M. (rock_4)	134	0	135	2026-02-09 12:37:00	2026-02-13 10:46:31	5650
6	Komarov A.N. (Shveda Saulya)	41	59	150	2023-11-22 17:11:28	2026-02-13 01:49:19	1171238
7	Sarkis'yan G. (gennadi_s)	16	149	194	2026-02-10 15:42:58		21682
8	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		43169
9	Lukov D.R. (Gendalf)	244	0	32	2025-12-05 01:36:21		119009
10	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		330712
11	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		452432
12	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		534587
13	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		564835
14	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		577023
15	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		724876
16	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		726184
17	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		748935
18	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		858474
19	Slavutinskij V.V. (Vasilko)	453	0	5	2024-04-22 17:26:35		970538
20	Slavutinskij V.V. (Vasilko)	453	0	7	2024-04-22 17:26:21		970539
21	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		999694
22	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		1026215
23	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		1039847
24	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1105889
25	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1109203
26	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1111593
27	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1144258
28	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1196520
29	Rudikov E. (cubie)	135	0	138	2023-10-31 17:27:54		1221097
30	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1503685
31	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1537674
32	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1641663
33	Koptel'tsev V. (selber)	21	119	237	2022-11-06 21:16:51		1737828
34	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1777037
35	Lukov D.R. (Gendalf)	244	0	90	2022-07-21 11:18:50		1893946
36	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2040527
37	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2292284
38	Fedevych V.I. (labuch_fedev)	37	65	221	2021-07-20 17:09:05		2420636
39	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2554990
40	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2597176
41	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2600924
42	Kozharinov A. (bubala)	210	0	10	2020-09-30 09:55:07		2842990
43	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		2910353
44	Koptel'tsev V. (selber)	21	119	259	2020-06-24 00:22:07		2984683
45	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		3049637
46	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		3057607
47	Fedevych V.I. (labuch_fedev)	37	65	226	2020-04-06 22:22:48		3097122
48	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3120849
49	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3431239
50	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3458521
51	Romanov K.Yu. (kostik)	309	0	12	2019-07-25 08:42:10		3466583
52	Kordyum A. (alko58)	227	0	12	2019-07-12 15:58:52		3484866
53	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3528945
54	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3668920
55	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3767187
56	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3770368
57	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3912559
58	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3973107
59	Voevutskij S.A. (SergLK)	216	0	45	2018-07-01 13:19:14		4026466
60	Zyrin V.E. (Vezyr)	544	0	29	2018-05-29 14:14:19		4073931
61	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		4165997
62	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4169906
63	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4169985
64	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4192615
65	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4206771
66	F (uff)	65	25	95	2018-01-22 15:57:03		4256708
67	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4308376
68	Kordyum A. (alko58)	227	0	101	2017-11-21 18:18:43		4345846
69	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4347607
70	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4348676
71	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4386391
72	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4413507
73	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4446570
74	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4523215
75	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4569760
76	Vorob'ev E.V. (Johnnymnemonic)	161	0	138	2017-06-16 09:15:49		4573909
77	F (uff)	65	25	185	2017-06-01 10:27:49		4595437
78	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4635310
79	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4697201
80	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4932105
81	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4967578
82	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		5046801
83	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5177136
84	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5219235
85	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5388656
86	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5420344
87	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5454342
88	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5463704
89	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5489550
90	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5503854
91	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5505540
92	Varenikov D.M. (Dmitriy Varenikov)	19	128	263	2015-08-31 08:35:37		5517149
93	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5520720
94	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5524051
95	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5567737
96	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5569004
97	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5577566
98	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5587296
99	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5595923
100	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5826362

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