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SQL exercises

June 15, 02:57 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: 15076

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Dubinskij A.V. (_velial)	10	223	88	2025-06-14 13:07:56	2025-06-14 13:12:01	4
2	Dubinskij A.V. (_velial)	10	223	32	2025-06-14 11:33:39	2025-06-14 12:59:20	86
3	Makarov I.A. (_Bkmz_)	75	16	203	2025-06-14 11:13:55	2025-06-14 12:44:35	91
4	Makarov I.A. (_Bkmz_)	75	16	236	2025-06-14 10:28:33	2025-06-14 11:03:01	34
5	Dubinskij A.V. (_velial)	10	223	7	2025-06-13 21:25:31	2025-06-13 21:36:57	11
6	Dubinskij A.V. (_velial)	10	223	5	2025-06-13 20:49:56	2025-06-13 21:24:28	35
7	Makarov I.A. (_Bkmz_)	75	16	201	2025-06-13 10:21:16	2025-06-13 12:43:54	143
8	Makarov I.A. (_Bkmz_)	75	16	197	2025-06-12 10:17:44	2025-06-12 15:13:57	296
9	Sarkis'yan G. (gennadi_s)	28	94	172	2025-06-11 18:25:26		4832
10	Sarkis'yan G. (gennadi_s)	28	94	171	2025-05-26 13:59:15	2025-06-08 15:02:17	18783
11	Makarov I.A. (_Bkmz_)	75	16	192	2025-06-07 10:24:39	2025-06-07 11:11:34	47
12	Makarov I.A. (_Bkmz_)	75	16	256	2025-06-07 09:56:25	2025-06-07 10:16:52	20
13	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		84385
14	Fomichev A.V. (Fomichev)	195	0	7	2025-02-25 02:16:37		158441
15	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		166540
16	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		196788
17	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		208976
18	Lyubomudrov R.G. (born2tilt)	70	22	162	2024-10-10 07:48:40		356829
19	Lyubomudrov R.G. (born2tilt)	70	22	202	2024-10-09 10:00:37		358137
20	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		380888
21	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		408328
22	Zajtsev V.S. (Sleeping)	21	112	164	2024-07-09 13:11:22		490426
23	Slavutinskij V.V. (Vasilko)	446	0	5	2024-04-22 17:26:35		602491
24	Slavutinskij V.V. (Vasilko)	446	0	7	2024-04-22 17:26:21		602491
25	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		631647
26	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		658168
27	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		671800
28	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		737842
29	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		741156
30	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		743546
31	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		776210
32	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		821386
33	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		828473
34	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		853050
35	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1098082
36	Zajtsev V.S. (Sleeping)	21	112	150	2023-04-18 11:40:16		1135637
37	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1169627
38	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1273616
39	Koptel'tsev V. (selber)	20	113	237	2022-11-06 21:16:51		1369781
40	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1408989
41	Lukov D.R. (Gendalf)	240	0	90	2022-07-21 11:18:50		1525899
42	Pavlov A.V. (Anton)	59	29	141	2022-04-10 16:17:39		1672480
43	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1786530
44	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		1924237
45	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2052589
46	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2186943
47	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2229129
48	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2232876
49	Kozharinov A. (bubala)	205	0	10	2020-09-30 09:55:07		2474943
50	Samarin A. (not.yet.sql.master)	139	0	112	2020-08-14 15:12:10		2542305
51	Koptel'tsev V. (selber)	20	113	259	2020-06-24 00:22:07		2616636
52	Samarin A. (not.yet.sql.master)	139	0	138	2020-05-09 21:48:04		2681590
53	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2689560
54	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2729075
55	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2752802
56	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3063191
57	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3090473
58	Romanov K.Yu. (kostik)	304	0	12	2019-07-25 08:42:10		3098535
59	Kordyum A. (alko58)	223	0	12	2019-07-12 15:58:52		3116819
60	Pavlov A.V. (Anton)	59	29	168	2019-06-12 01:20:21		3160897
61	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3300872
62	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3399140
63	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3402321
64	Shindin A.V. (AlShin)	24	99	45	2018-09-18 15:45:28		3544512
65	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3605059
66	Voevutskij S.A. (SergLK)	210	0	45	2018-07-01 13:19:14		3658418
67	Zyrin V.E. (Vezyr)	537	0	29	2018-05-29 14:14:19		3705883
68	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3797950
69	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3801859
70	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3801938
71	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		3824567
72	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		3838724
73	F (uff)	64	25	95	2018-01-22 15:57:03		3888661
74	Aliev R. (y4nzi)	26	95	259	2017-12-17 18:48:39		3940329
75	Kordyum A. (alko58)	223	0	101	2017-11-21 18:18:43		3977799
76	Zajtsev V.S. (Sleeping)	21	112	190	2017-11-20 12:57:31		3979560
77	Aliev R. (y4nzi)	26	95	257	2017-11-19 19:09:17		3980628
78	Aliev R. (y4nzi)	26	95	255	2017-10-24 14:34:21		4018343
79	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4045460
80	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4078523
81	Grinkevich D.L. (Dmitrij Grinkevich)	22	109	115	2017-07-21 14:09:37		4155168
82	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4201713
83	Vorob'ev E.V. (Johnnymnemonic)	157	0	138	2017-06-16 09:15:49		4205862
84	F (uff)	64	25	185	2017-06-01 10:27:49		4227390
85	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4267263
86	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4329154
87	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4564057
88	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4599530
89	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4678754
90	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4809089
91	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		4851188
92	Sivoglazov M.A. (Gaizenberg)	65	24	127	2015-11-28 14:08:52		5020609
93	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5052296
94	Sivoglazov M.A. (Gaizenberg)	65	24	261	2015-10-13 23:22:26		5086295
95	Fomichev A.V. (Fomichev)	195	0	101	2015-10-07 11:21:04		5095657
96	Grinkevich D.L. (Dmitrij Grinkevich)	22	109	188	2015-09-19 12:34:48		5121503
97	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5135807
98	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5137493
99	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		5149102
100	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5152673

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