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SQL exercises

August 10, 21:42 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: 15142

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	15	180	205	2026-08-07 13:45:21	2026-08-10 17:09:13	4524
2	Sarkis'yan G. (gennadi_s)	15	180	204	2026-08-04 12:34:26	2026-08-04 13:41:32	67
3	Koptel'tsev V. (selber)	19	133	198	2026-07-12 02:54:38	2026-07-31 20:31:37	28417
4	Williams B. (BW)	35	67	252	2026-07-31 13:33:49		14889
5	Williams B. (BW)	35	67	236	2026-07-29 13:21:56	2026-07-31 13:32:08	2890
6	Vyazovetskov A.S. (alex_v)	6	245	181	2026-07-29 14:43:59	2026-07-30 18:38:40	1675
7	Williams B. (BW)	35	67	264	2026-07-29 13:21:27		17781
8	Williams B. (BW)	35	67	308	2026-07-23 14:59:30	2026-07-29 13:19:06	8540
9	Sarkis'yan G. (gennadi_s)	15	180	203	2026-07-28 14:11:50	2026-07-28 15:38:56	87
10	Sigankov V.I. (vasilyvanc)	33	74	216	2026-07-23 12:13:08		26490
11	Sigankov V.I. (vasilyvanc)	33	74	241	2026-07-21 14:05:13		29258
12	Zajtsev V.S. (Sleeping)	22	118	241	2026-06-16 18:38:55		79384
13	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		113813
14	Komarov A.N. (Shveda Saulya)	37	65	160	2026-05-09 13:24:21		134419
15	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		147478
16	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		157706
17	Vyazovetskov A.S. (alex_v)	6	245	264	2026-04-22 19:15:17		158548
18	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		189259
19	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		282487
20	Lukov D.R. (Gendalf)	247	0	32	2025-12-05 01:36:21		358327
21	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		570030
22	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		804153
23	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		816341
24	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		964194
25	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		965502
26	Frolov K.A. (Murderface_)	135	0	138	2024-09-23 14:49:59		988253
27	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1097792
28	Slavutinskij V.V. (Vasilko)	455	0	5	2024-04-22 17:26:35		1209856
29	Slavutinskij V.V. (Vasilko)	455	0	7	2024-04-22 17:26:21		1209857
30	Williams B. (BW)	35	67	141	2024-04-02 11:30:28		1239012
31	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1265533
32	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1279165
33	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1345207
34	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1348521
35	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1350911
36	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1383576
37	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1435838
38	Rudikov E. (cubie)	136	0	138	2023-10-31 17:27:54		1460415
39	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1776992
40	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1880981
41	Koptel'tsev V. (selber)	19	133	237	2022-11-06 21:16:51		1977146
42	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		2016355
43	Lukov D.R. (Gendalf)	247	0	90	2022-07-21 11:18:50		2133264
44	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2279845
45	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2531602
46	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2659954
47	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2794308
48	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2836494
49	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2840242
50	Kozharinov A. (bubala)	213	0	10	2020-09-30 09:55:07		3082308
51	Samarin A. (not.yet.sql.master)	147	0	112	2020-08-14 15:12:10		3149671
52	Koptel'tsev V. (selber)	19	133	259	2020-06-24 00:22:07		3224001
53	Samarin A. (not.yet.sql.master)	147	0	138	2020-05-09 21:48:04		3288955
54	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3296926
55	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3336440
56	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3360167
57	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3670557
58	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3697839
59	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3705901
60	Kordyum A. (alko58)	231	0	12	2019-07-12 15:58:52		3724184
61	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3768263
62	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3908238
63	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		4006506
64	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		4009686
65	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4151877
66	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4212425
67	Voevutskij S.A. (SergLK)	219	0	45	2018-07-01 13:19:14		4265784
68	Zyrin V.E. (Vezyr)	552	0	29	2018-05-29 14:14:19		4313249
69	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4405315
70	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4409224
71	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4409303
72	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4431933
73	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4446089
74	F (uff)	65	25	95	2018-01-22 15:57:03		4496026
75	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4547694
76	Kordyum A. (alko58)	231	0	101	2017-11-21 18:18:43		4585164
77	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4586925
78	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4587994
79	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4625709
80	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4652825
81	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4685888
82	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4762533
83	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4809078
84	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4813227
85	F (uff)	65	25	185	2017-06-01 10:27:49		4834755
86	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4874628
87	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4936519
88	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5171423
89	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5206896
90	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5286119
91	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5416454
92	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5458553
93	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5627974
94	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5659662
95	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5693661
96	Fomichev A.V. (Fomichev)	200	0	101	2015-10-07 11:21:04		5703022
97	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5728868
98	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5743172
99	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5744858
100	Varenikov D.M. (Dmitriy Varenikov)	20	130	263	2015-08-31 08:35:37		5756467

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