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Get records with max value for each group of grouped SQL results
...max() etc, and also the problems of returning multiple rows when there are more than one with the same maximum value (as the other answers would do)
Note: This is a mysql-only solution. All other databases I know will throw an SQL syntax error with the message "non aggregated columns are not listed ...
When do you use the “this” keyword? [closed]
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245
votes
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How to bind RadioButtons to an enum?
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You could use a more generic converter
public class EnumBooleanConverter : IValueConverter
{
#region IValueConverter Members
public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture...
“Code too large” compilation error in Java
Is there any maximum size for code in Java? I wrote a function with more than 10,000 lines. Actually, each line assigns a value to an array variable.
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What is more efficient? Using pow to square or just multiply it with itself?
What of these two methods is in C more efficient? And how about:
7 Answers
7
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angularJS: How to call child scope function in parent scope
.../jsfiddle.net/wUPdW/2/
UPDATE: There is another version, less coupled and more testable:
function ParentCntl($scope) {
$scope.msg = "";
$scope.get = function(){
$scope.$broadcast ('someEvent');
return $scope.msg;
}
$scope.$on('pingBack', function(e,data) {...
MySQL pagination without double-querying?
...so want to think of just not retrieving the total results. It's becoming a more common practice to implement auto-paging methods. Sites like Facebook, Twitter, Bing, and Google have been using this method for ages.
– Thomas B
Nov 30 '12 at 6:24
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Does it make sense to use “as” instead of a cast even if there is no null check? [closed]
...ould use a normal cast when you are sure of the type. Besides generating a more sensible exception, it also fails fast. If you're wrong about your assumption about the type, your program will fail immediately and you'll be able to see the cause of failure immediately rather than waiting for a NullRe...
How do I return the response from an asynchronous call?
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→ For a more general explanation of async behaviour with different examples, please see Why is my variable unaltered after I modify it inside of a function? - Asynchronous code reference
→ If you already understand the problem, ski...
Add UIPickerView & a Button in Action sheet - How?
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A much more elegant solution IMHO is to set your textfield's input view to UIPickerView and its accessory to UIToolbar. You can check out the QuickDialog project for an example.
– Steve Moser
J...