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SQL exercises

April 13, 22:05 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: 15064

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	15	160	198	2026-04-13 14:57:51		427
2	Kostomarov A.V. (al29)	5	247	24	2026-04-13 13:11:46	2026-04-13 14:15:15	63
3	Kuritsyn V.N. (ValNick)	139	0	24	2026-04-11 22:13:57	2026-04-11 22:41:38	28
4	Komarov A.N. (Shveda Saulya)	38	62	159	2026-04-10 16:59:02		4626
5	Sarkis'yan G. (gennadi_s)	15	160	197	2026-04-10 12:16:57	2026-04-10 15:25:18	188
6	Komarov A.N. (Shveda Saulya)	38	62	158	2026-04-06 16:38:40	2026-04-07 00:39:10	481
7	Komarov A.N. (Shveda Saulya)	38	62	24	2026-04-06 16:13:31	2026-04-06 16:30:45	17
8	Polyakov V.M. (rock_4)	116	6	146	2026-04-06 15:53:06		10452
9	Polyakov V.M. (rock_4)	116	6	254	2026-03-25 09:58:47	2026-04-06 15:22:00	17603
10	Sarkis'yan G. (gennadi_s)	15	160	196	2026-04-04 14:52:32	2026-04-06 14:56:09	2884
11	Chernov D.V. (Kursist)	2	262	24	2026-04-05 21:27:47	2026-04-05 22:13:10	45
12	Koptel'tsev V. (selber)	20	122	24	2026-04-05 18:00:17	2026-04-05 18:20:48	21
13	Kurochkin P.A. (qwrqwr)	11	211	24	2026-04-05 13:51:41	2026-04-05 14:52:27	61
14	Sarkis'yan G. (gennadi_s)	15	160	24	2026-04-04 13:32:52	2026-04-04 13:45:41	13
15	Krasovskij E.A. (pegoopik)	1	262	24	2026-04-03 23:24:48	2026-04-03 23:24:51	0
16	Polyakov V.M. (rock_4)	116	6	148	2026-04-01 11:23:28		17922
17	Polyakov V.M. (rock_4)	116	6	140	2026-03-31 09:33:07	2026-04-01 10:33:47	1501
18	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		111149
19	Lukov D.R. (Gendalf)	245	0	32	2025-12-05 01:36:21		186989
20	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		398692
21	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		520412
22	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		602567
23	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		632815
24	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		645004
25	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		792856
26	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		794164
27	Frolov K.A. (Murderface_)	134	0	138	2024-09-23 14:49:59		816915
28	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		926454
29	Slavutinskij V.V. (Vasilko)	453	0	5	2024-04-22 17:26:35		1038518
30	Slavutinskij V.V. (Vasilko)	453	0	7	2024-04-22 17:26:21		1038519
31	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1067675
32	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1094195
33	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		1107827
34	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1173870
35	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1177183
36	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1179573
37	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1212238
38	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1264500
39	Rudikov E. (cubie)	135	0	138	2023-10-31 17:27:54		1289077
40	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1605655
41	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1709643
42	Koptel'tsev V. (selber)	20	122	237	2022-11-06 21:16:51		1805808
43	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1845017
44	Lukov D.R. (Gendalf)	245	0	90	2022-07-21 11:18:50		1961926
45	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2108507
46	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2360264
47	Fedevych V.I. (labuch_fedev)	37	65	221	2021-07-20 17:09:05		2488616
48	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2622970
49	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2665156
50	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2668904
51	Kozharinov A. (bubala)	211	0	10	2020-09-30 09:55:07		2910970
52	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		2978333
53	Koptel'tsev V. (selber)	20	122	259	2020-06-24 00:22:07		3052663
54	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		3117617
55	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		3125588
56	Fedevych V.I. (labuch_fedev)	37	65	226	2020-04-06 22:22:48		3165102
57	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3188830
58	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3499219
59	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3526501
60	Romanov K.Yu. (kostik)	311	0	12	2019-07-25 08:42:10		3534563
61	Kordyum A. (alko58)	229	0	12	2019-07-12 15:58:52		3552846
62	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3596925
63	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3736900
64	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3835168
65	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3838349
66	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3980540
67	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		4041087
68	Voevutskij S.A. (SergLK)	217	0	45	2018-07-01 13:19:14		4094446
69	Zyrin V.E. (Vezyr)	545	0	29	2018-05-29 14:14:19		4141911
70	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4233977
71	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4237887
72	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4237965
73	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4260595
74	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4274752
75	F (uff)	65	25	95	2018-01-22 15:57:03		4324688
76	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4376356
77	Kordyum A. (alko58)	229	0	101	2017-11-21 18:18:43		4413826
78	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4415588
79	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4416656
80	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4454371
81	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4481488
82	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4514551
83	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4591195
84	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4637740
85	Vorob'ev E.V. (Johnnymnemonic)	162	0	138	2017-06-16 09:15:49		4641889
86	F (uff)	65	25	185	2017-06-01 10:27:49		4663417
87	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4703290
88	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4765181
89	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		5000085
90	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		5035558
91	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		5114781
92	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5245116
93	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5287216
94	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5456636
95	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5488324
96	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5522323
97	Fomichev A.V. (Fomichev)	199	0	101	2015-10-07 11:21:04		5531684
98	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5557530
99	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5571834
100	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5573520

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