大约有 41,000 项符合查询结果（耗时：0.0452秒） [XML]
SQL Server Management Studio, how to get execution time down to milliseconds
...able in your proc:
DECLARE @EndTime datetime
DECLARE @StartTime datetime
SELECT @StartTime=GETDATE()
-- Write Your Query
SELECT @EndTime=GETDATE()
--This will return execution time of your query
SELECT DATEDIFF(ms,@StartTime,@EndTime) AS [Duration in millisecs]
AND see this
Measuring Quer...
How to use range-based for() loop with std::map?
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If copy assignment operator of foo and bar is cheap (eg. int, char, pointer etc), you can do the following:
foo f; bar b;
BOOST_FOREACH(boost::tie(f,b),testing)
{
cout << "Foo is " << f << " Bar is " << b;
}
...
Trigger change() event when setting 's value with val() function
... easiest and best way to trigger change event when setting the value of select element.
5 Answers
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How do I clear all options in a dropdown box?
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You can use the following to clear all the elements.
var select = document.getElementById("DropList");
var length = select.options.length;
for (i = length-1; i >= 0; i--) {
select.options[i] = null;
}
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How to remove all namespaces from XML with C#?
... return new XElement(xmlDocument.Name.LocalName, xmlDocument.Elements().Select(el => RemoveAllNamespaces(el)));
}
It's working 100%, but I have not tested it much so it may not cover some special cases... But it is good base to start.
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Retain precision with double in Java
... Types, Formats, and Values of the Java Language Specification.
The byte, char, int, long types are fixed-point numbers, which are exact representions of numbers. Unlike fixed point numbers, floating point numbers will some times (safe to assume "most of the time") not be able to return an exact re...
jQuery autocomplete tagging plug-in like StackOverflow's input tags? [closed]
...otstrap-tagsinput/examples/
(demo?) http://jcesar.artelogico.com/jquery-tagselector/
(demo?) http://remysharp.com/wp-content/uploads/2007/12/tagging.php
(demo?) http://pietschsoft.com/post/2011/09/09/Tag-Editor-Field-using-jQuery-similar-to-StackOverflow.aspx
Related:
https://meta.stackexchange....
What is so bad about singletons? [closed]
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I disagree with you. Since comments are allowed only 600 chars, I have written a Blog Post to comment on this, please see the link below. jorudolph.wordpress.com/2009/11/22/singleton-considerations
– Johannes Rudolph
Nov 22 '09 at 14:35
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Explicit vs implicit SQL joins
...e joined and how they are joined. Try compare larger SQL queries where you selecting from 8 different tables and you have lots of filtering in the where. By using join syntax you separate out the parts where the tables are joined, to the part where you are filtering the rows.
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postgresql list and order tables by size
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select table_name, pg_relation_size(quote_ident(table_name))
from information_schema.tables
where table_schema = 'public'
order by 2
This shows you the size of all tables in the schema public if you have multiple schemas, y...