大约有 30,000 项符合查询结果（耗时：0.0327秒） [XML]
What is the Oracle equivalent of SQL Server's IsNull() function?
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How do you get the width and height of a multi-dimensional array?
...th(), rather than Length.
int rowsOrHeight = ary.GetLength(0);
int colsOrWidth = ary.GetLength(1);
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jquery-ui sortable | How to get it work on iPad/touchdevices?
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This works on Android tablet too. Specifically tested on a Samsung Galaxy tab 10.1 on Android 3.1.
– absynce
Jan 10 '12 at 20:50
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must appear in the GROUP BY clause or be used in an aggregate function
...ted primary key, resulting in the following incorrect query: SELECT cname, id, MAX(avg) FROM makerar GROUP BY cname;, which did give this misleading error.
– Roberto
Mar 2 at 15:21
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Representing Monetary Values in Java [closed]
...omized currency list (loaded via CVS).
This library has a small number of files that one can quickly go through if modifications are needed. Joda-Money is published under the Apache 2.0 license.
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What's the @ in front of a string in C#?
...ter that is now escaped is ", escaped to "". This is especially useful for file paths and regex:
var path = @"c:\some\location";
var tsql = @"SELECT *
FROM FOO
WHERE Bar = 1";
var escaped = @"a "" b";
etc
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Regex how to match an optional character
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Tim, I honestly am not sure as I didn't write this regex. I'm still pretty new to regex. If you see a better way of writing this, I'm open to suggestions.
– jim
Oct 24 '10 at 6:45
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How to sort the result from string_agg()
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The question was about string_agg. Postgres was incidental to his question and he mentioned it last. The question is useful to others as well.
– nomen
Mar 5 at 17:42
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mysqli or PDO - what are the pros and cons? [closed]
...u do like object mapping, it's REALLY cool :
class Student {
public $id;
public $first_name;
public $last_name
public function getFullName() {
return $this->first_name.' '.$this->last_name
}
}
try
{
$dbh = new PDO("mysql:host=$hostname;dbname=school", $user...
Invert “if” statement to reduce nesting
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A return in the middle of the method is not necessarily bad. It might be better to return immediately if it makes the intent of the code clearer. For example:
double getPayAmount() {
double result;
if (_isDead) result = deadAmount();...