Rating of second-stage exercises on SQL Exercises

Language

February 05, 20:40 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.
NOTE: Your browser should support Cookies and Javascript to provide correct usage of this site. If you use content filter, it should allow opening child windows to explore help pages.

Login: Password:
	forgot password? Registration

Ratings

  • Top 100
  • "Liberal" rating
  • Olympic rating
  • TOP 100 of Learning Stage
  • Rating by summation of ranks
  • Top 10 (photos)
  • Last-week results
  • Rating of second-stage exercises (average)
  • Rating of 2nd-stage exercises (median)
  • Author's rating  • 2nd stage rating up to exercise:
   enter No 
  • Rating on the exercise:
   enter No
  • Optimistic rating
   enter factor

Statistics

  • Today statistics
  • Site's old residents
  • Recent leaders activity
  • Сhanges in exercises' TOP 10
  • Results' chart

SQL exercises

  • SELECT (learning stage)
  • SELECT (learning stage,
      choosing DBMS)
  • SELECT (rating stages)
  • DML

Forums

  • Learning stage
  • Rating stages
  • Favorites
  • Search

Certification

  • About certification
  • The first certificate in SQL
  • Certified professionals
  • Statistics
  • Confirm certificate

HELP

Query optimization

Transact-SQL tests

Modelling of data

Exercises voting

For employers

Support SQL-EX.RU

Poll

Would you get the following certificate?

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
155	3	16	68189	2	vlksm	2009-04-17	10.0
96	3	246	63319	84	anddros	2008-11-22	8.6
251	4	54	55276	4	paparome	2006-10-01	7.3
149	3	22	45985	2	$erges	2008-09-08	9.2
253	3	22	33674	7	$erges	2008-05-17	9.3
138	4	101	32357	31	Cyrilus	2005-12-09	9.3
49	1	553	29566	21	anddros	2009-06-05	7.4
157	3	15	29124	2	anddros	2009-06-05	9.0
172	3	12	25250	1	Ozzy	2011-03-11	9.8
143	5	28	24174	12	inkerman	2007-10-07	8.7
154	4	15	23908	3	anddros	2009-03-18	9.8
147	4	15	23314	0	$erges	2010-08-06	10.0
173	1	25	22355	2	Ozzy	2011-01-13	8.9
165	2	13	19212	2	vlksm	2010-03-18	10.0
121	3	304	19165	4	ZrenBy	2004-02-26	7.2
151	3	21	17607	3	anddros	2008-12-30	9.5
62	1	1034	13540	15	Serge I	2004-06-23	7.2
163	3	12	13076	0	Ozzy	2010-01-08	9.4
183	2	8	12928	1	GriGrim	2011-11-12	9.8
141	4	51	12920	6	vlksm	2006-10-29	9.0
252	2	24	12676	4	Ozzy	2009-06-14	7.1
161	3	13	11590	2	Ozzy	2009-11-06	9.6
106	3	160	10435	5	vlksm	2008-11-27	8.9
153	3	18	10312	4	Ozzy	2009-02-14	9.4
171	3	10	9814	0	Ozzy	2010-12-05	9.1
101	4	70	9252	6	Pegoopik	2010-11-20	9.6
160	3	18	7969	0	Ozzy	2009-08-07	9.6
152	3	25	6810	4	vlksm	2009-01-05	9.6
159	3	15	6547	0	anddros	2009-08-24	8.9
139	2	83	5948	2	Snowbear	2006-09-09	8.3
181	2	6	5389	0	Ozzy	2011-10-08	9.5
144	4	27	5336	2	pvv	2008-01-01	7.4
137	4	144	5251	22	Cyrilus	2005-03-06	9.2
102	3	41	5041	4	GriGrim	2011-07-16	9.5
179	3	8	4875	0	Pegoopik	2011-09-17	9.5
146	3	35	4681	2	paparome	2008-01-22	9.8
150	4	23	4160	2	@Nikotin	2008-11-09	8.6
116	4	131	3930	18	$erges	2008-12-13	9.2
132	3	48	3867	2	risp	2010-01-25	7.9
175	3	16	3525	0	Pegoopik	2011-04-28	9.3
126	3	113	3412	6	$erges	2008-09-07	8.6
123	3	139	3248	42	Ozzy	2009-08-22	9.0
187	3	8	3216	0	=Maxim=	2011-12-31	9.5
164	2	17	2997	0	anddros	2010-04-26	9.7
148	2	35	2881	7	vlksm	2008-09-06	9.1
145	3	46	2478	2	pvv	2008-01-07	8.9
65	2	312	2339	35	Ozzy	2010-01-29	8.1
98	3	430	2251	38	ZrenBy	2003-09-01	8.2
167	3	13	2192	0	qwrqwr	2011-01-18	9.7
168	2	17	2026	0	qwrqwr	2010-08-27	9.5
186	1	8	1937	2	Ozzy	2011-12-30	10.0
158	3	18	1896	0	Ozzy	2010-04-09	9.2
156	2	27	1869	2	anddros	2009-04-17	9.5
162	2	27	1657	0	Ozzy	2009-12-26	9.4
100	3	99	1588	4	qwrqwr	2010-04-27	9.4
178	3	7	1574	0	Baser	2011-08-13	9.8
184	2	5	1558	0	Baser	2011-11-26	9.5
87	3	458	1552	81	Roman Golubin	2006-07-14	9.4
99	2	106	1547	0	qwrqwr	2010-05-13	7.8
166	1	29	1485	2	anddros	2010-07-26	9.4
142	2	73	1472	1	paparome	2007-03-24	8.8
140	2	38	1434	0	_Bkmz_	2010-01-30	8.6
110	3	315	1306	10	Snowbear	2006-03-14	9.0
72	3	755	1277	142	paparome	2005-12-03	9.1
174	1	22	1273	0	qwrqwr	2011-02-25	9.5
169	3	16	1268	0	Valdaj	2010-09-02	8.9
176	2	9	1139	0	qwrqwr	2011-05-20	9.9
122	3	283	1130	11	Fiolent	2004-02-26	7.7
52	2	596	1043	8	Roman Golubin	2005-12-13	7.3
125	3	268	1020	5	dimzv	2004-02-29	8.7
182	3	8	867	0	Baser	2011-10-29	9.6
118	2	320	810	1	Fiolent	2004-01-05	8.2
89	3	243	789	27	_Bkmz_	2008-06-21	8.0
134	3	121	762	3	pvv	2008-01-22	8.7
76	2	199	756	7	silver	2010-01-23	8.6
88	1	250	751	2	$erges	2008-09-06	6.2
120	2	46	721	6	Ozzy	2011-05-12	7.9
85	3	160	682	11	Ozzy	2009-10-10	8.3
114	3	337	643	4	Serge I	2003-12-24	8.5
254	1	18	608	0	Baser	2011-09-02	8.8
180	3	11	588	0	qwrqwr	2011-09-16	9.4
129	3	210	570	7	DimaN	2004-03-01	7.4
68	2	810	555	96	Palkin	2007-03-29	8.3
130	2	52	511	0	anddros	2010-05-22	8.9
109	3	375	504	1	VIG	2003-12-23	7.8
170	2	26	492	0	qwrqwr	2010-10-24	9.2
133	2	26	469	1	pickman	2011-07-01	8.3
185	1	13	463	0	=Maxim=	2011-11-25	8.9
124	3	275	455	3	DimaN	2004-02-26	7.9
67	3	239	412	10	Ozzy	2010-04-27	8.1
84	2	202	407	14	Ozzy	2009-12-26	8.1
111	3	337	384	3	Fiolent	2005-01-19	8.4
136	3	181	379	0	Fiolent	2004-06-23	8.1
66	2	313	375	33	anddros	2009-12-26	8.4
82	2	164	371	4	_Virt_	2010-04-27	8.1
177	1	18	357	0	Pegoopik	2011-07-17	8.9
80	2	78	328	10	qwrqwr	2011-10-21	9.3
60	1	1494	321	119	Serge I	2005-03-05	7.3
128	2	161	320	5	inkerman	2007-09-14	8.4
92	2	390	298	10	paparome	2006-07-26	8.5
103	3	393	288	1	VIG	2003-12-22	8.0
190	1	4	270	0	qwrqwr	2012-02-03	10.0
54	1	732	268	47	Ozzy	2008-09-06	8.0
97	2	480	263	1	ZrenBy	2003-09-01	7.6
51	1	368	255	6	qwrqwr	2010-05-01	7.0
50	3	868	253	9	VIG	2003-04-29	7.8
71	2	239	253	15	anddros	2009-12-26	8.6
112	2	319	249	3	VIG	2005-06-26	7.2
74	2	405	245	9	vlksm	2008-06-21	8.1
41	1	433	229	17	qwrqwr	2010-04-26	7.4
40	1	1480	225	75	Serge I	2003-04-08	7.7
107	2	304	202	3	lepton	2006-09-29	8.2
79	2	744	198	15	Serge I	2003-06-05	7.2
77	2	539	187	11	yuriy.rozhok	2007-03-24	7.5
115	3	335	185	1	Serge I	2003-12-26	8.0
64	2	1267	174	14	Serge I	2005-05-07	7.3
47	2	290	171	13	qwrqwr	2010-11-20	7.5
81	2	372	154	13	$erges	2008-05-10	7.9
86	1	144	152	0	Ozzy	2010-03-05	8.9
45	2	401	151	3	vasia armor	2010-05-21	7.2
42	2	957	136	12	Serge I	2003-06-05	7.2
104	1	203	134	0	DimaN	2004-06-22	6.2
30	2	940	122	5	Serge I	2003-08-28	7.4
61	2	373	111	2	risp	2009-12-26	8.2
90	3	544	107	3	VIG	2003-09-01	7.4
113	2	295	106	0	paparome	2006-03-14	7.6
119	2	316	104	0	mslava	2004-01-05	7.3
26	2	577	104	10	VIG	2003-12-22	7.3
28	2	957	102	4	Serge I	2003-08-28	7.3
117	2	322	96	0	Fiolent	2003-12-26	7.0
95	2	346	95	1	Fiolent	2004-06-22	7.3
105	3	389	93	0	mslava	2003-12-22	8.1
127	2	235	89	2	dimzv	2004-03-01	7.4
83	2	687	89	2	Serge I	2003-08-28	6.8
57	2	1401	88	26	Serge I	2003-04-08	7.2
34	2	374	88	18	qwrqwr	2010-09-24	7.7
69	1	64	87	6	Serge I	2011-11-25	7.7
46	1	554	86	126	Serge I	2009-08-12	6.0
91	3	81	84	4	crescent	2011-03-23	8.4
93	2	516	81	0	ZrenBy	2003-09-01	7.2
131	1	198	74	1	Serge I	2004-06-22	6.4
78	2	176	73	2	_ORA_	2010-04-27	6.9
32	1	1086	71	25	mslava	2003-09-01	6.7
70	1	371	68	3	Serge I	2009-04-17	7.6
27	1	691	66	6	Aaz	2004-02-26	6.1
36	2	235	65	10	risp	2011-05-06	7.7
75	1	113	60	1	qwrqwr	2011-07-22	7.2
108	3	378	56	0	mslava	2003-12-23	7.1
56	2	430	55	3	Fiolent	2004-06-22	7.5
94	2	75	54	0	pickman	2011-04-27	8.0
135	1	136	51	0	Serge I	2007-09-07	7.5
53	1	861	48	26	DimaN	2004-03-01	7.3
43	2	464	47	2	Fiolent	2004-02-26	6.6
39	1	813	47	0	ZrenBy	2003-09-01	6.5
73	1	173	47	2	Ruslan1707	2010-11-02	6.8
33	2	437	45	24	DimaN	2004-03-01	7.5
55	1	783	45	73	Serge I	2008-06-21	7.0
29	1	176	42	16	GiBis	2011-09-17	7.3
35	2	659	38	1	ZrenBy	2003-09-01	6.8
38	2	722	36	3	ZrenBy	2003-09-01	6.7
63	2	754	36	5	VIG	2003-06-05	7.0
37	1	1584	34	53	paparome	2005-12-02	7.2
44	1	682	33	2	ZrenBy	2003-09-01	6.5
58	1	1350	28	53	Serge I	2006-11-17	7.6
48	1	526	27	7	Serge I	2009-06-22	6.9
59	1	345	24	1	qwrqwr	2010-04-26	6.9
31	1	998	21	4	Serge I	2003-08-28	6.5
25	1	1286	18	7	Serge I	2003-04-29	6.8
188	3	1		0	qwrqwr	2012-02-04
189	4	1		0	Baser	2012-02-05

| Курсы 1с бухгалтерия 7 7. Обучение 1с, курсы 1с бухгалтерия, аудиторские услуги. | Офисная мебель от от лучшего поставщика коллекция Рационал . |

Home
Week news

Certification

SQL exercises

Forums

Ratings

HELP

Performance

Profile
References