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SQL exercises

August 09, 14:45 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	178	205	2026-08-07 13:45:21		2940
2	Sarkis'yan G. (gennadi_s)	15	178	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		13032
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		15924
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	178	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		24632
11	Sigankov V.I. (vasilyvanc)	33	74	241	2026-07-21 14:05:13		27400
12	Zajtsev V.S. (Sleeping)	22	118	241	2026-06-16 18:38:55		77527
13	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		111956
14	Komarov A.N. (Shveda Saulya)	37	65	160	2026-05-09 13:24:21		132561
15	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		145620
16	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		155848
17	Vyazovetskov A.S. (alex_v)	6	245	264	2026-04-22 19:15:17		156690
18	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		187402
19	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		280629
20	Lukov D.R. (Gendalf)	247	0	32	2025-12-05 01:36:21		356469
21	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		568173
22	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		802296
23	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		814484
24	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		962337
25	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		963645
26	Frolov K.A. (Murderface_)	135	0	138	2024-09-23 14:49:59		986396
27	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1095934
28	Slavutinskij V.V. (Vasilko)	455	0	5	2024-04-22 17:26:35		1207999
29	Slavutinskij V.V. (Vasilko)	455	0	7	2024-04-22 17:26:21		1207999
30	Williams B. (BW)	35	67	141	2024-04-02 11:30:28		1237155
31	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1263676
32	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1277308
33	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1343350
34	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1346664
35	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1349054
36	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1381718
37	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1433981
38	Rudikov E. (cubie)	136	0	138	2023-10-31 17:27:54		1458558
39	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1775135
40	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1879124
41	Koptel'tsev V. (selber)	19	133	237	2022-11-06 21:16:51		1975289
42	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		2014497
43	Lukov D.R. (Gendalf)	247	0	90	2022-07-21 11:18:50		2131407
44	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2277988
45	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2529745
46	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2658096
47	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2792450
48	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2834637
49	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2838384
50	Kozharinov A. (bubala)	213	0	10	2020-09-30 09:55:07		3080450
51	Samarin A. (not.yet.sql.master)	147	0	112	2020-08-14 15:12:10		3147813
52	Koptel'tsev V. (selber)	19	133	259	2020-06-24 00:22:07		3222143
53	Samarin A. (not.yet.sql.master)	147	0	138	2020-05-09 21:48:04		3287097
54	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3295068
55	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3334583
56	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3358310
57	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3668699
58	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3695981
59	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3704043
60	Kordyum A. (alko58)	231	0	12	2019-07-12 15:58:52		3722327
61	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3766405
62	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3906380
63	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		4004648
64	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		4007829
65	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4150020
66	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4210567
67	Voevutskij S.A. (SergLK)	219	0	45	2018-07-01 13:19:14		4263926
68	Zyrin V.E. (Vezyr)	552	0	29	2018-05-29 14:14:19		4311391
69	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4403458
70	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4407367
71	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4407446
72	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4430075
73	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4444232
74	F (uff)	65	25	95	2018-01-22 15:57:03		4494169
75	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4545837
76	Kordyum A. (alko58)	231	0	101	2017-11-21 18:18:43		4583307
77	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4585068
78	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4586136
79	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4623851
80	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4650968
81	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4684031
82	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4760676
83	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4807221
84	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4811370
85	F (uff)	65	25	185	2017-06-01 10:27:49		4832898
86	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4872771
87	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4934662
88	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5169565
89	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5205038
90	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5284261
91	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5414597
92	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5456696
93	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5626117
94	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5657804
95	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5691803
96	Fomichev A.V. (Fomichev)	200	0	101	2015-10-07 11:21:04		5701164
97	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5727011
98	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5741315
99	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5743001
100	Varenikov D.M. (Dmitriy Varenikov)	20	130	263	2015-08-31 08:35:37		5754610

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