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SQL exercises

August 12, 12:17 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: 15144

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		17204
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		20096
8	Sigankov V.I. (vasilyvanc)	33	74	216	2026-07-23 12:13:08		28805
9	Sigankov V.I. (vasilyvanc)	33	74	241	2026-07-21 14:05:13		31572
10	Zajtsev V.S. (Sleeping)	22	118	241	2026-06-16 18:38:55		81699
11	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		116128
12	Komarov A.N. (Shveda Saulya)	37	65	160	2026-05-09 13:24:21		136733
13	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		149792
14	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		160020
15	Vyazovetskov A.S. (alex_v)	6	245	264	2026-04-22 19:15:17		160862
16	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		191574
17	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		284801
18	Lukov D.R. (Gendalf)	247	0	32	2025-12-05 01:36:21		360641
19	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		572345
20	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		806468
21	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		818656
22	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		966509
23	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		967817
24	Frolov K.A. (Murderface_)	135	0	138	2024-09-23 14:49:59		990568
25	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1100106
26	Slavutinskij V.V. (Vasilko)	455	0	5	2024-04-22 17:26:35		1212171
27	Slavutinskij V.V. (Vasilko)	455	0	7	2024-04-22 17:26:21		1212171
28	Williams B. (BW)	35	67	141	2024-04-02 11:30:28		1241327
29	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1267848
30	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1281480
31	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1347522
32	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1350836
33	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1353226
34	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1385890
35	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1438153
36	Rudikov E. (cubie)	136	0	138	2023-10-31 17:27:54		1462730
37	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1779307
38	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1883296
39	Koptel'tsev V. (selber)	19	133	237	2022-11-06 21:16:51		1979461
40	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		2018669
41	Lukov D.R. (Gendalf)	247	0	90	2022-07-21 11:18:50		2135579
42	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2282160
43	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2533917
44	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2662269
45	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2796623
46	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2838809
47	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2842556
48	Kozharinov A. (bubala)	213	0	10	2020-09-30 09:55:07		3084623
49	Samarin A. (not.yet.sql.master)	147	0	112	2020-08-14 15:12:10		3151985
50	Koptel'tsev V. (selber)	19	133	259	2020-06-24 00:22:07		3226316
51	Samarin A. (not.yet.sql.master)	147	0	138	2020-05-09 21:48:04		3291270
52	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3299240
53	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3338755
54	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3362482
55	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3672871
56	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3700153
57	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3708215
58	Kordyum A. (alko58)	231	0	12	2019-07-12 15:58:52		3726499
59	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3770577
60	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3910552
61	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		4008820
62	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		4012001
63	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4154192
64	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4214739
65	Voevutskij S.A. (SergLK)	219	0	45	2018-07-01 13:19:14		4268098
66	Zyrin V.E. (Vezyr)	552	0	29	2018-05-29 14:14:19		4315563
67	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4407630
68	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4411539
69	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4411618
70	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4434247
71	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4448404
72	F (uff)	65	25	95	2018-01-22 15:57:03		4498341
73	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4550009
74	Kordyum A. (alko58)	231	0	101	2017-11-21 18:18:43		4587479
75	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4589240
76	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4590308
77	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4628023
78	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4655140
79	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4688203
80	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4764848
81	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4811393
82	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4815542
83	F (uff)	65	25	185	2017-06-01 10:27:49		4837070
84	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4876943
85	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4938834
86	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5173737
87	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5209210
88	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5288434
89	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5418769
90	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5460868
91	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5630289
92	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5661976
93	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5695975
94	Fomichev A.V. (Fomichev)	200	0	101	2015-10-07 11:21:04		5705337
95	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5731183
96	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5745487
97	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5747173
98	Varenikov D.M. (Dmitriy Varenikov)	20	130	263	2015-08-31 08:35:37		5758782
99	Chebykin D. (GriGrim)	39	62	263	2015-08-28 21:04:30		5762353
100	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5765684

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