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SQL exercises

June 23, 00:30 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: 15084

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	25	97	173	2025-06-22 15:29:39		541
2	Sarkis'yan G. (gennadi_s)	25	97	172	2025-06-11 18:25:26	2025-06-20 14:07:31	12702
3	Makarov I.A. (_Bkmz_)	74	18	235	2025-06-15 10:19:27	2025-06-15 10:56:09	37
4	Dubinskij A.V. (_velial)	10	223	88	2025-06-14 13:07:56	2025-06-14 13:12:01	4
5	Dubinskij A.V. (_velial)	10	223	32	2025-06-14 11:33:39	2025-06-14 12:59:20	86
6	Makarov I.A. (_Bkmz_)	74	18	203	2025-06-14 11:13:55	2025-06-14 12:44:35	91
7	Makarov I.A. (_Bkmz_)	74	18	236	2025-06-14 10:28:33	2025-06-14 11:03:01	34
8	Dubinskij A.V. (_velial)	10	223	7	2025-06-13 21:25:31	2025-06-13 21:36:57	11
9	Dubinskij A.V. (_velial)	10	223	5	2025-06-13 20:49:56	2025-06-13 21:24:28	35
10	Makarov I.A. (_Bkmz_)	74	18	201	2025-06-13 10:21:16	2025-06-13 12:43:54	143
11	Makarov I.A. (_Bkmz_)	74	18	197	2025-06-12 10:17:44	2025-06-12 15:13:57	296
12	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		95758
13	Fomichev A.V. (Fomichev)	195	0	7	2025-02-25 02:16:37		169814
14	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		177912
15	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		208160
16	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		220349
17	Lyubomudrov R.G. (born2tilt)	70	22	162	2024-10-10 07:48:40		368202
18	Lyubomudrov R.G. (born2tilt)	70	22	202	2024-10-09 10:00:37		369510
19	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		392260
20	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		419700
21	Zajtsev V.S. (Sleeping)	21	112	164	2024-07-09 13:11:22		501799
22	Slavutinskij V.V. (Vasilko)	446	0	5	2024-04-22 17:26:35		613864
23	Slavutinskij V.V. (Vasilko)	446	0	7	2024-04-22 17:26:21		613864
24	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		643020
25	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		669541
26	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		683172
27	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		749215
28	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		752529
29	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		754918
30	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		787583
31	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		832759
32	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		839846
33	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		864422
34	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1109454
35	Zajtsev V.S. (Sleeping)	21	112	150	2023-04-18 11:40:16		1147010
36	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1181000
37	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1284989
38	Koptel'tsev V. (selber)	20	113	237	2022-11-06 21:16:51		1381153
39	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1420362
40	Lukov D.R. (Gendalf)	240	0	90	2022-07-21 11:18:50		1537271
41	Pavlov A.V. (Anton)	59	29	141	2022-04-10 16:17:39		1683853
42	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1797902
43	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		1935609
44	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2063961
45	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2198315
46	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2240502
47	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2244249
48	Kozharinov A. (bubala)	205	0	10	2020-09-30 09:55:07		2486315
49	Samarin A. (not.yet.sql.master)	139	0	112	2020-08-14 15:12:10		2553678
50	Koptel'tsev V. (selber)	20	113	259	2020-06-24 00:22:07		2628008
51	Samarin A. (not.yet.sql.master)	139	0	138	2020-05-09 21:48:04		2692962
52	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2700933
53	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2740447
54	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2764175
55	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3074564
56	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3101846
57	Romanov K.Yu. (kostik)	304	0	12	2019-07-25 08:42:10		3109908
58	Kordyum A. (alko58)	224	0	12	2019-07-12 15:58:52		3128191
59	Pavlov A.V. (Anton)	59	29	168	2019-06-12 01:20:21		3172270
60	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3312245
61	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3410513
62	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3413694
63	Shindin A.V. (AlShin)	24	99	45	2018-09-18 15:45:28		3555885
64	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3616432
65	Voevutskij S.A. (SergLK)	210	0	45	2018-07-01 13:19:14		3669791
66	Zyrin V.E. (Vezyr)	537	0	29	2018-05-29 14:14:19		3717256
67	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3809322
68	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3813232
69	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3813310
70	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		3835940
71	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		3850097
72	F (uff)	64	25	95	2018-01-22 15:57:03		3900033
73	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		3951702
74	Kordyum A. (alko58)	224	0	101	2017-11-21 18:18:43		3989171
75	Zajtsev V.S. (Sleeping)	21	112	190	2017-11-20 12:57:31		3990933
76	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		3992001
77	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4029716
78	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4056833
79	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4089896
80	Grinkevich D.L. (Dmitrij Grinkevich)	22	109	115	2017-07-21 14:09:37		4166541
81	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4213085
82	Vorob'ev E.V. (Johnnymnemonic)	157	0	138	2017-06-16 09:15:49		4217234
83	F (uff)	64	25	185	2017-06-01 10:27:49		4238762
84	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4278635
85	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4340526
86	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4575430
87	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4610903
88	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4690126
89	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4820461
90	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		4862561
91	Sivoglazov M.A. (Gaizenberg)	65	24	127	2015-11-28 14:08:52		5031981
92	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5063669
93	Sivoglazov M.A. (Gaizenberg)	65	24	261	2015-10-13 23:22:26		5097668
94	Fomichev A.V. (Fomichev)	195	0	101	2015-10-07 11:21:04		5107029
95	Grinkevich D.L. (Dmitrij Grinkevich)	22	109	188	2015-09-19 12:34:48		5132875
96	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5147179
97	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5148865
98	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		5160475
99	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5164046
100	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5167377

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