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SQL exercises

April 20, 09:51 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	162	198	2026-04-13 14:57:51	2026-04-19 13:46:18	8568
2	Sigankov V.I. (vasilyvanc)	33	74	24	2026-04-16 17:02:10	2026-04-16 17:20:47	19
3	Polyakov V.M. (rock_4)	94	9	152	2026-04-16 13:35:42		5535
4	Polyakov V.M. (rock_4)	94	9	162	2026-04-16 13:25:02		5546
5	Polyakov V.M. (rock_4)	94	9	146	2026-04-06 15:53:06	2026-04-15 17:22:34	13049
6	Polyakov V.M. (rock_4)	94	9	24	2026-04-14 15:22:40	2026-04-14 16:03:02	40
7	Kostomarov A.V. (al29)	5	247	24	2026-04-13 13:11:46	2026-04-13 14:15:15	63
8	Kuritsyn V.N. (ValNick)	139	0	24	2026-04-11 22:13:57	2026-04-11 22:41:38	28
9	Komarov A.N. (Shveda Saulya)	38	62	159	2026-04-10 16:59:02		13972
10	Sarkis'yan G. (gennadi_s)	15	162	197	2026-04-10 12:16:57	2026-04-10 15:25:18	188
11	Komarov A.N. (Shveda Saulya)	38	62	158	2026-04-06 16:38:40	2026-04-07 00:39:10	481
12	Polyakov V.M. (rock_4)	94	9	148	2026-04-01 11:23:28		27268
13	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		120495
14	Lukov D.R. (Gendalf)	245	0	32	2025-12-05 01:36:21		196335
15	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		408038
16	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		529758
17	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		611913
18	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		642161
19	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		654350
20	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		802202
21	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		803510
22	Frolov K.A. (Murderface_)	134	0	138	2024-09-23 14:49:59		826261
23	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		935800
24	Slavutinskij V.V. (Vasilko)	454	0	5	2024-04-22 17:26:35		1047864
25	Slavutinskij V.V. (Vasilko)	454	0	7	2024-04-22 17:26:21		1047865
26	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1077021
27	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1103541
28	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		1117173
29	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1183216
30	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1186529
31	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1188919
32	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1221584
33	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1273846
34	Rudikov E. (cubie)	135	0	138	2023-10-31 17:27:54		1298423
35	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1615001
36	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1718989
37	Koptel'tsev V. (selber)	20	122	237	2022-11-06 21:16:51		1815154
38	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		1854363
39	Lukov D.R. (Gendalf)	245	0	90	2022-07-21 11:18:50		1971272
40	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2117853
41	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2369610
42	Fedevych V.I. (labuch_fedev)	37	65	221	2021-07-20 17:09:05		2497962
43	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2632316
44	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2674502
45	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2678250
46	Kozharinov A. (bubala)	211	0	10	2020-09-30 09:55:07		2920316
47	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		2987679
48	Koptel'tsev V. (selber)	20	122	259	2020-06-24 00:22:07		3062009
49	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		3126963
50	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		3134934
51	Fedevych V.I. (labuch_fedev)	37	65	226	2020-04-06 22:22:48		3174448
52	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3198176
53	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3508565
54	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3535847
55	Romanov K.Yu. (kostik)	311	0	12	2019-07-25 08:42:10		3543909
56	Kordyum A. (alko58)	229	0	12	2019-07-12 15:58:52		3562192
57	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3606271
58	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3746246
59	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3844514
60	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3847695
61	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3989886
62	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		4050433
63	Voevutskij S.A. (SergLK)	217	0	45	2018-07-01 13:19:14		4103792
64	Zyrin V.E. (Vezyr)	547	0	29	2018-05-29 14:14:19		4151257
65	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4243323
66	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4247233
67	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4247311
68	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4269941
69	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4284098
70	F (uff)	65	25	95	2018-01-22 15:57:03		4334034
71	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4385702
72	Kordyum A. (alko58)	229	0	101	2017-11-21 18:18:43		4423172
73	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4424934
74	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4426002
75	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4463717
76	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4490834
77	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4523896
78	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4600541
79	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4647086
80	Vorob'ev E.V. (Johnnymnemonic)	162	0	138	2017-06-16 09:15:49		4651235
81	F (uff)	65	25	185	2017-06-01 10:27:49		4672763
82	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4712636
83	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4774527
84	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		5009431
85	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		5044904
86	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		5124127
87	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5254462
88	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5296562
89	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5465982
90	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5497670
91	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5531669
92	Fomichev A.V. (Fomichev)	199	0	101	2015-10-07 11:21:04		5541030
93	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5566876
94	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5581180
95	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5582866
96	Varenikov D.M. (Dmitriy Varenikov)	19	128	263	2015-08-31 08:35:37		5594475
97	Chebykin D. (GriGrim)	39	62	263	2015-08-28 21:04:30		5598047
98	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5601378
99	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5645063
100	Khromulyak O.M. (ChOleg)	121	5	150	2015-07-26 08:20:51		5646330

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