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Is a view faster than a simple query?
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Yes, views can have a clustered index assigned and, when they do, they'll store temporary results that can speed up resulting queries.
Update: At least three people have voted me down on this one. With all due respect, I think that they are just wrong; ...
PHP Warning: POST Content-Length of 8978294 bytes exceeds the limit of 8388608 bytes in Unknown on l
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8388608 bytes is 8M, the default limit in PHP. Update your post_max_size in php.ini to a larger value.
upload_max_filesize sets the max file size that a user can upload while
post_max_size sets the maximum amount of data that can be sent via a POST in a form.
So y...
Increasing nesting function calls limit
There is one very bad limit in PHP: if you call some function a1() that calls a2(), that calls a3... so when a99() will call a100() you will see
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Configure WAMP server to send email
...th me.
If you just want to test, here is a great tool for testing mail locally, that requires almost no configuration:
http://www.toolheap.com/test-mail-server-tool/
It worked right off the bat for me, hope this helps you.
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How to use a switch case 'or' in PHP
...ase 2:
echo "the value is either 1 or 2.";
break;
}
This is called "falling through" the case block. The term exists in most languages implementing a switch statement.
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How do I check if a column is empty or null in MySQL?
...unction on a column in the WHERE clause as it makes it difficult to use an index. If you simply want to check if a column is null or empty, you may be better off doing this:
SELECT myCol
FROM MyTable
WHERE MyCol IS NULL OR MyCol = ''
See TRIM COALESCE and IS NULL for more info.
Also Working with ...
Using Node.js only vs. using Node.js with Apache/Nginx
... Node isn't that good huh? centminmod.com/siegebenchmarks/2013/020313/index.html, zgadzaj.com/…
– el vis
May 27 '13 at 10:48
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PHP开发利器EPP4发布 基于Eclipse核心 - IT产品资讯 - 清泛网 - 专注C/C++及内核技术
PHP开发利器EPP4发布 基于Eclipse核心EclipsePHP Studio 简体中文版介绍 - EPPEclipsePHP Studio 简称 EPP ，EPP 使用的 Eclipse 核心编译而来。针对PHP开发者提供的
EclipsePHP Studio 简体中文版介绍 - EPP
EclipsePHP Studio 简称 “EPP ”，EP...
Import multiple csv files into pandas and concatenate into one DataFrame
....csv")
li = []
for filename in all_files:
df = pd.read_csv(filename, index_col=None, header=0)
li.append(df)
frame = pd.concat(li, axis=0, ignore_index=True)
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Pandas: drop a level from a multi-level column index?
If I've got a multi-level column index:
7 Answers
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