Rating of second-stage exercises (average) on SQL Exercises

SQL exercises

May 30, 07:49 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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Rating of second-stage exercises (average)

Rating of 2nd-stage exercises (median)

No - exercise number; Bonus - level of difficulty;
Solved - number of visitors, who have solved this exercise;
Time(min) - the average time (calculated over TOP 20) that has been spent for solution in minutes;
noOK - number of visitors, who have not solved this exercise yet.
(Click on a cell to see list of these);
Rank - average score on a result of voting.

No	Bonus	Solved	Time(min)	noOK	Author	Date	Rank
211	2	13	187896	1	Baser	2014-06-30	9.8
217	4	9	113664	4	pegoopik	2015-08-28	9.2
159	3	17	88573	0	anddros	2012-07-22	8.2
214	4	11	73899	0	pegoopik	2015-05-30	10.0
175	3	29	71452	0	pegoopik	2011-04-28	8.5
190	4	16	70717	1	vlksm	2012-03-17	8.8
220	3	6	70495	1	pegoopik	2016-12-17	10.0
251	4	68	70189	3	paparome	2006-10-01	8.0
255	4	14	68481	3	vlksm	2012-02-14	9.8
101	4	200	66645	15	pegoopik	2010-11-20	9.4
102	4	167	64152	7	GriGrim	2011-07-16	9.4
252	2	34	63484	3	Ozzy	2009-06-14	8.3
178	3	22	63420	1	Baser	2011-08-13	9.1
172	3	21	63251	0	Ozzy	2011-03-11	9.7
304	2	24	63065	0	aks_nsk	2016-02-05	9.3
96	3	399	61496	81	anddros	2008-11-22	8.8
191	3	14	58423	0	qwrqwr	2012-06-08	9.5
143	5	44	54551	14	inkerman	2007-10-07	8.8
189	4	15	52225	0	Baser	2012-02-05	8.6
181	4	15	51625	1	Ozzy	2011-10-08	9.7
259	4	22	50526	1	anddros	2009-08-24	9.5
258	3	25	49820	0	Baser	2014-09-19	7.6
216	3	11	49497	1	pegoopik	2015-05-15	9.9
187	3	24	49210	0	=Maxim=	2011-12-31	8.8
169	3	29	45715	0	Valdaj	2010-09-02	8.4
93	3	152	45443	5	qwrqwr	2014-03-14	9.3
138	5	144	44293	33	Cyrilus	2005-12-09	9.2
205	2	15	40832	0	qwrqwr	2013-11-22	8.9
120	4	91	39861	1	pegoopik	2014-02-14	8.9
165	2	29	38636	3	vlksm	2010-03-18	9.9
194	4	15	37950	1	pegoopik	2012-07-13	10.0
261	1	35	37829	1	Fomichev	2013-12-07	7.0
253	3	30	36920	7	$erges	2008-05-17	8.9
99	3	179	35295	8	Dmitrij Grinkevich	2012-05-05	8.1
188	3	17	34385	1	qwrqwr	2012-02-04	9.8
157	3	24	28226	2	anddros	2009-06-05	9.6
49	2	1097	28161	22	anddros	2009-06-05	7.8
212	3	15	27716	0	Baser	2014-10-14	8.8
92	2	542	27541	10	paparome	2006-07-26	8.4
224	3	10	26714	0	selber	2017-04-14	9.4
163	3	19	26664	0	Ozzy	2010-01-08	9.6
186	1	37	24559	0	Ozzy	2011-12-30	9.2
160	3	26	24221	0	Ozzy	2009-08-07	9.6
154	4	25	23397	3	anddros	2009-03-18	9.9
119	5	92	21673	5	Velmont	2014-03-07	9.7
149	3	33	21496	2	$erges	2008-09-08	9.2
161	3	21	20348	2	Ozzy	2009-11-06	9.2
173	1	52	18776	2	Ozzy	2011-01-13	9.3
126	2	178	18684	11	$erges	2008-09-07	8.5
171	3	19	17760	1	Ozzy	2010-12-05	9.3
150	4	35	17228	4	@Nikotin	2008-11-09	8.5
147	4	26	17024	2	$erges	2010-08-06	9.7
122	1	122	16020	2	Dmitrij Grinkevich	2012-09-14	5.9
156	2	51	15525	3	anddros	2009-04-17	9.1
184	2	25	15219	2	Baser	2011-11-26	8.8
176	3	31	14965	0	qwrqwr	2011-05-20	9.5
151	3	32	13744	5	anddros	2008-12-30	8.9
19	1	1886	13536	23	Serge I	2004-06-23	7.5
193	2	21	11860	0	Baser	2012-07-06	8.3
145	3	69	11844	1	pvv	2008-01-07	8.6
174	1	56	11817	0	qwrqwr	2011-02-25	9.3
148	2	65	11640	7	vlksm	2008-09-06	9.3
62	2	633	11566	9	Dmitrij Grinkevich	2012-02-11	8.0
106	3	268	10671	5	vlksm	2008-11-27	8.7
100	4	233	10332	9	qwrqwr	2010-04-27	9.4
164	2	37	10058	1	anddros	2010-04-26	9.7
210	2	14	9550	0	_dimon_	2014-02-07	10.0
206	4	14	9282	0	Baser	2013-11-23	9.1
218	4	12	8905	2	al29	2016-04-04	9.6
257	4	16	8812	2	pegoopik	2012-02-20	9.4
115	2	64	8675	1	selber	2016-05-28	9.1
225	2	9	8561	0	pegoopik	2017-07-15	9.8
208	3	14	8424	0	pegoopik	2013-12-20	8.8
139	2	124	7533	2	Snowbear	2006-09-09	8.3
183	2	30	7303	2	GriGrim	2011-11-12	9.1
155	3	26	6905	2	vlksm	2009-04-17	9.9
223	2	11	6714	1	Baser	2016-11-12	9.7
77	2	281	6577	31	selber	2015-07-10	8.7
137	4	189	6413	24	Cyrilus	2005-03-06	9.2
152	3	46	6388	4	vlksm	2009-01-05	9.7
230	2	7	6349	1	pegoopik	2018-07-27	9.8
180	3	30	6318	0	qwrqwr	2011-09-16	9.6
144	4	44	6306	4	pvv	2008-01-01	7.3
200	3	18	6257	0	qwrqwr	2013-10-05	9.3
153	3	35	6216	4	Ozzy	2009-02-14	9.5
141	4	77	6121	9	vlksm	2006-10-29	9.0
234	3	3	6045	0	Kursist	2020-02-28	9.5
229	3	6	5490	1	al29	2018-03-23	9.6
198	2	23	5416	0	Angellore	2013-09-13	9.4
227	3	9	5136	1	mcrain	2017-12-08	7.0
45	2	350	4995	18	dumkan	2016-04-03	7.9
179	3	17	4926	0	pegoopik	2011-09-17	9.2
231	3	5	4923	0	mcrain	2018-08-24	10.0
123	3	232	4689	39	Ozzy	2009-08-22	9.0
116	5	231	4626	20	$erges	2008-12-13	9.3
140	2	80	4503	2	_Bkmz_	2010-01-30	8.9
121	3	393	4356	4	ZrenBy	2004-02-26	7.8
133	2	88	4315	0	pickman	2011-07-01	8.2
132	3	107	4298	4	risp	2010-01-25	7.7
213	2	25	4184	0	qwrqwr	2014-10-17	9.6
26	1	1377	3992	24	VIG	2003-12-22	7.7
168	2	42	3902	2	qwrqwr	2010-08-27	9.5
215	2	22	3868	1	pegoopik	2015-03-06	9.3
158	3	38	3282	0	Ozzy	2010-04-09	8.9
182	3	22	3230	0	Baser	2011-10-29	8.1
135	3	62	3171	1	qwrqwr	2013-04-19	8.9
232	3	5	3110	0	al29	2018-08-20	10.0
65	3	663	3027	46	Ozzy	2010-01-29	7.7
222	2	11	3016	1	pegoopik	2016-12-23	9.8
131	2	87	2989	1	GriGrim	2012-05-25	8.5
221	2	13	2858	0	Baser	2016-11-05	8.6
98	4	567	2819	46	ZrenBy	2003-09-01	8.2
107	2	390	2778	10	Fiolent	2004-02-26	8.3
72	4	992	2777	151	paparome	2005-12-03	9.2
167	3	23	2747	0	qwrqwr	2011-01-18	9.9
87	4	619	2641	89	Roman Golubin	2006-07-14	9.3
256	1	39	2460	1	anddros	2013-11-08	8.9
89	3	399	2425	29	_Bkmz_	2008-06-21	7.8
136	3	111	2289	5	Ozzy	2011-05-12	7.3
146	3	60	2281	3	paparome	2008-01-22	9.7
209	1	33	2198	1	Baser	2013-12-30	8.0
228	1	18	2194	1	qwrqwr	2018-01-12	10.0
302	0	37	2173	0	pegoopik	2012-07-27	7.6
219	2	14	2158	0	pegoopik	2016-04-08	9.9
199	3	20	2073	0	Baser	2013-08-17	8.4
204	1	34	1989	1	anddros	2013-11-19	8.7
166	1	59	1937	2	anddros	2010-07-26	9.6
195	3	26	1845	0	Dmitrij Grinkevich	2013-04-20	9.1
71	3	515	1785	18	anddros	2009-12-26	8.4
196	3	24	1658	0	qwrqwr	2013-05-17	9.4
233	1	12	1643	1	pegoopik	2019-03-08	10.0
125	3	358	1606	3	dimzv	2004-02-29	8.7
58	3	538	1540	10	qwrqwr	2013-03-01	8.1
127	2	54	1511	2	GriGrim	2014-12-21	7.6
130	2	114	1472	0	anddros	2010-05-22	8.8
76	3	428	1420	16	silver	2010-01-23	8.8
85	3	347	1414	18	Ozzy	2009-10-10	8.5
20	2	1383	1410	34	VIG	2003-09-01	8.0
142	2	113	1375	1	paparome	2007-03-24	9.0
185	1	43	1372	3	=Maxim=	2011-11-25	7.9
207	3	14	1337	0	pegoopik	2016-01-15	10.0
84	3	395	1305	18	Ozzy	2009-12-26	8.4
226	3	9	1236	2	pegoopik	2017-10-14	9.2
111	2	439	1229	3	Fiolent	2005-01-19	8.2
134	3	172	1222	4	pvv	2008-01-22	8.6
197	1	43	1194	0	pegoopik	2013-06-10	8.8
105	2	125	1193	0	Baser	2013-09-20	8.5
64	3	546	1167	45	qwrqwr	2010-05-13	7.9
88	3	265	1106	5	crescent	2011-03-23	8.9
110	3	417	1097	11	Snowbear	2006-03-14	8.8
203	1	40	1096	1	=Maxim=	2013-10-05	9.4
80	2	319	1095	10	qwrqwr	2011-10-21	8.9
162	2	59	1019	0	Ozzy	2009-12-26	9.3
66	3	625	1001	52	anddros	2009-12-26	8.4
177	1	53	982	0	pegoopik	2011-07-17	8.5
307	2	18	976	0	Baser	2017-06-29	8.5
40	1	186	972	15	Serge I	2018-09-07	7.2
124	2	364	964	3	DimaN	2004-02-26	8.3
170	2	54	963	1	qwrqwr	2010-10-24	9.0
202	2	29	959	0	qwrqwr	2013-11-01	9.1
32	1	1256	919	7	Roman Golubin	2005-12-13	7.5
114	1	437	891	4	Serge I	2003-12-24	8.4
260	2	52	870	0	qwrqwr	2012-02-03	7.7
201	2	38	794	0	Baser	2013-09-21	8.7
129	2	269	767	7	DimaN	2004-03-01	7.5
254	1	44	763	2	Baser	2011-09-02	8.7
305	1	25	732	0	Baser	2017-01-06	8.9
43	2	433	731	3	qwrqwr	2015-04-24	8.5
23	3	1449	691	119	Palkin	2007-03-29	8.4
91	2	211	669	1	smog	2012-05-26	9.1
103	1	126	595	1	Baser	2013-10-05	7.2
192	2	48	594	0	Baser	2012-03-03	9.2
82	3	366	580	12	_Virt_	2010-04-27	8.2
68	3	257	559	19	pegoopik	2014-08-01	8.0
118	2	413	551	1	Fiolent	2004-01-05	8.2
67	2	541	550	17	Ozzy	2010-04-27	8.3
75	2	373	545	5	qwrqwr	2011-07-22	7.4
60	3	1986	514	119	Serge I	2005-03-05	7.8
47	3	866	512	14	qwrqwr	2010-11-20	8.0
54	2	1258	506	45	Ozzy	2008-09-06	8.2
37	3	664	497	26	qwrqwr	2013-02-22	8.0
79	1	945	484	14	Serge I	2003-06-05	7.7
41	3	1033	481	17	qwrqwr	2010-04-26	8.0
69	2	133	449	7	Gosha	2017-12-15	9.1
35	3	470	445	10	Baser	2015-09-18	8.7
50	1	741	398	6	mslava	2003-12-22	8.2
109	2	479	380	1	VIG	2003-12-23	7.9
86	2	329	377	0	Ozzy	2010-03-05	8.6
78	2	394	357	3	_ORA_	2010-04-27	7.5
51	1	472	356	12	Fiolent	2004-06-23	8.0
63	1	1256	323	5	VIG	2003-06-05	7.6
59	2	834	322	7	VIG	2003-12-22	8.2
73	1	433	319	2	Ruslan1707	2010-11-02	7.4
34	2	1073	313	25	qwrqwr	2010-09-24	7.9
90	1	223	305	0	Dmitrij Grinkevich	2012-03-03	7.8
44	2	649	285	7	Serge I	2011-11-25	7.8
61	2	888	284	5	risp	2009-12-26	8.4
38	2	935	280	21	ZrenBy	2003-09-01	7.6
12	1	235	280	37	Serge I	2019-04-12	7.3
25	2	1125	274	30	DimaN	2004-06-22	7.0
97	1	354	269	3	dimzv	2004-03-01	7.6
74	2	643	266	8	vlksm	2008-06-21	8.3
262	2	10	254	0	selber	2019-06-21	5.8
46	2	1110	250	127	Serge I	2009-08-12	6.7
104	1	126	245	0	pegoopik	2013-07-19	8.3
33	2	1152	223	24	DimaN	2004-03-01	7.6
113	1	121	222	0	smog	2013-03-29	8.4
128	1	223	222	4	inkerman	2007-09-14	8.3
95	1	78	216	2	qwrqwr	2017-12-01	9.4
112	2	419	215	3	VIG	2005-06-26	7.5
57	2	1777	212	14	Serge I	2005-05-07	7.8
17	2	1525	208	21	VIG	2003-04-29	8.1
18	1	1520	173	7	ZrenBy	2003-09-01	7.6
83	2	517	172	4	lepton	2006-09-29	8.4
70	1	642	169	3	Serge I	2009-04-17	7.8
9	2	1253	166	22	vasia armor	2010-05-21	7.9
30	1	1649	138	3	Serge I	2003-08-28	7.9
81	2	575	138	12	$erges	2008-05-10	8.2
94	2	240	130	0	pickman	2011-04-27	8.3
52	1	409	128	3	Serge I	2015-01-10	8.7
108	1	482	127	0	mslava	2003-12-23	7.3
56	1	970	126	3	Fiolent	2004-06-22	7.9
16	2	780	115	62	qwrqwr	2014-07-18	7.4
36	3	934	113	20	risp	2011-05-06	7.9
42	1	1531	111	14	Serge I	2003-06-05	7.6
21	1	1094	104	9	paparome	2006-03-14	8.0
13	1	1605	98	21	ZrenBy	2003-09-01	7.4
53	1	1382	98	25	DimaN	2004-03-01	7.6
39	2	1287	97	20	Serge I	2003-08-28	7.5
28	1	1101	94	14	ZrenBy	2003-09-01	7.5
14	1	2326	88	37	Serge I	2003-04-08	7.5
29	2	971	78	42	GiBis	2011-09-17	7.5
24	2	1517	77	7	Aaz	2004-02-26	6.9
31	1	933	63	7	Fiolent	2004-06-22	7.8
117	1	415	56	0	Fiolent	2003-12-26	7.6
8	2	2184	55	103	Serge I	2003-04-08	7.9
55	2	1307	49	72	Serge I	2008-06-21	7.6
48	1	1072	41	6	Serge I	2009-06-22	7.3
11	1	1772	41	16	ZrenBy	2003-09-01	7.4
22	1	1514	38	11	ZrenBy	2003-09-01	7.2
27	1	1171	36	8	Fiolent	2004-02-26	7.3
7	1	2350	32	74	Serge I	2006-11-17	8.0
10	1	576	25	40	Serge I	2017-01-20	8.1
15	1	1089	22	7	Dmitrij Grinkevich	2012-04-21	7.5
306	1	7	14	0	Kursist	2020-04-17	9.0
303	0	33	9	0	Serge I	2013-06-28	9.5
301	0	43	7	0	pegoopik	2012-03-23	8.9

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