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SQL how to make null values come last when sorting ascending
...s 0, and nulls become 1, which sorts nulls last.
You can also do this for strings:
SELECT *
FROM Employees
ORDER BY ISNULL(LEFT(LastName,0),'a'), LastName
Because 'a' > ''.
This even works with dates by coercing to a nullable int and using the method for ints above:
SELECT *
FROM Employe...
Git Bash is extremely slow on Windows 7 x64
...ve decided to redefine '__git_ps1()' in my ~/.bashrc, and just print empty string. It speeds up all the Bash commands.
– ajukraine
Jun 9 '13 at 18:47
Which version of PostgreSQL am I running?
...ver_version; is very handy in scripts to avoid having to parse in the long string of SELECT version();.
– vaab
Jun 2 '14 at 15:18
...
Checking the equality of two slices
...and []byte(nil)) are not deeply equal.
Other values - numbers, bools, strings, and channels - are deeply
equal if they are equal using Go's == operator.
share
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improve this answer
...
How to add to the PYTHONPATH in Windows, so it finds my modules/packages?
....;C:\My_python_lib If you don't, windows will expand %PYTHONPATH% to empty string as expected, it will keep it as %PYTHONPATH% in the PYTHONPATH and everything will break! Sounds crazy but thats how win7 cmd works...
– ntg
Nov 10 '17 at 12:19
...
Check if an array is empty or exists
...ray && !array.length) // array exists, but empty check; if(str) // string not null and not empty. The only gotcha is don't use on numbers if zero is a valid number.
– Rick Love
Feb 27 '17 at 3:47
...
How to capture the browser window close event?
...wasn't working as is, since the onbeforeunload returnValue is parsed as a string and then displayed in the confirmations box of the browser. So the value true was displayed, like "true".
Just using return worked.
Here is my code
var preventUnloadPrompt;
var messageBeforeUnload = "my message her...
Xcode Find and replace in all project files
...d to press enter for XCode to actually search through to find the matching strings. Otherwise the Replace / Replace All buttons remained disabled.
– Tim Beaudet
Jun 14 '15 at 17:17
...
What exactly is an Assembly in C# or .NET?
...quent calls.
The assembly can also contain resources like icons, bitmaps, string tables and so on. Furthermore, the assembly also contains metadata in the assembly manifest - information like version number, strong name, culture, referenced assemblies and so forth.
In 99% of your cases, one assem...
How to hide first section header in UITableView (grouped style)
...{
if (section == 0)
return 1.0f;
return 32.0f;
}
- (NSString*) tableView:(UITableView *) tableView titleForHeaderInSection:(NSInteger)section
{
if (section == 0) {
return nil;
} else {
// return some string here ...
}
}
- (void) viewDidLoad
{
[su...