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Efficient SQL test query or validation query that will work across all (or most) databases
...himpsky)
PostgreSQL
SQLite
SELECT 1 FROM DUAL
Oracle
SELECT 1 FROM any_existing_table WHERE 1=0
or
SELECT 1 FROM INFORMATION_SCHEMA.SYSTEM_USERS
or
CALL NOW()
HSQLDB (tested with version 1.8.0.10)
Note: I tried using a WHERE 1=0 clause on the second query, but it didn't work as a value for Ap...
How do I create a unique ID in Java? [duplicate]
...,'L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z',
'-','.','_','~'
};
}
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Converting a JS object to an array using jQuery
...r on the www i see lacks the conversion of keys.
– TD_Nijboer
Apr 9 '14 at 11:59
55
You can also ...
How can I pass an argument to a PowerShell script?
...ode in the file.
param([string]$path)
Get-ChildItem $path | Where-Object {$_.LinkType -eq 'SymbolicLink'} | select name, target
This creates a script with a path parameter. It will list all symbolic links within the path provided as well as the specified target of the symbolic link.
...
What's the difference between array_merge and array + array?
...ce is:
The + operator takes the union of the two arrays, whereas the array_merge function takes the union BUT the duplicate keys are overwritten.
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Can I change the color of auto detected links on UITextView?
...er won't.
If you want to set appearance for whole application, application(_:didFinishLaunchingWithOptions:) is good place for calling such code.
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Detecting when user has dismissed the soft keyboard
...int keyCode, KeyEvent event) {
if (event.getKeyCode() == KeyEvent.KEYCODE_BACK) {
// Do your thing.
return true; // So it is not propagated.
}
return super.dispatchKeyEvent(event);
}
Here is a link on how to use your custom views (for when you subclass EditText):
http://developer.an...
Capitalize first letter. MySQL
... change to use the CONCAT() function instead of the + operator :
UPDATE tb_Company
SET CompanyIndustry = CONCAT(UCASE(LEFT(CompanyIndustry, 1)),
SUBSTRING(CompanyIndustry, 2));
This would turn hello to Hello, wOrLd to WOrLd, BLABLA to BLABLA, etc. If you want to uppe...
uncaught syntaxerror unexpected token U JSON
...fined. I just spent 30 minutes finding that out.
– ug_
Feb 3 '14 at 3:53
13
@ns47731 That is actu...
Floating View 扩展：悬浮视图扩展，将组件转换为悬浮窗口 · App Inventor 2 中文网
...3. 视频播放悬浮窗
悬浮视频播放器：
当 Button_悬浮播放.点击
调用 FloatingView1.SetView 视图组件为 VideoPlayer 可点击为true 位置X为200 位置Y为300
调用 FloatingView1.EnableMove 启用为true
4. 快捷工具悬浮窗
...