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MySQL foreign key constraints, cascade delete
...RITY DEFINER
BEGIN
DELETE FROM
`products`
WHERE
`id` IN (
SELECT `products_id`
FROM `categories_products`
WHERE `categories_id` = category_ID
)
;
DELETE FROM `categories`
WHERE `id` = category_ID;
END
You also need to add the following foreign key constraints...
Constructor overloading in Java - best practice
...ht be JTable - the primary constructor takes a TableModel (plus column and selection models) and the other constructors call this primary constructor.
For subclasses where the superclass already has overloaded constructors, I would tend to assume that it is reasonable to treat any of the parent cla...
Can I have multiple :before pseudo-elements for the same element?
...s the case with any other CSS property.
This behavior is described in the Selectors section of CSS2.1:
Pseudo-elements behave just like real elements in CSS with the exceptions described below and elsewhere.
This implies that selectors with pseudo-elements work just like selectors for normal ...
Wrap a delegate in an IEqualityComparer
...
This is nice but if the key being selected was a value type there would be unnecessary boxing. Perhaps would be better to have a TKey for defining the key.
– Graham Ambrose
Aug 12 '11 at 13:19
...
How to change the session timeout in PHP?
..., it was about running 2 additional queries to get these prev/next values. SELECT id FROM gallery WHERE SortOrder > $currentsortorder LIMIT 1
– Your Common Sense
Nov 29 '11 at 13:37
...
What is the difference between public, protected, package-private and private in Java?
... friends -> "The less you know about it the better" ---> It gives selective visibility, which is still superior to package privacy. In C++, it has its uses, because not all functions can be member functions, and friends is better than public'ing. Of course there is a danger of misuse by evi...
Can an angular directive pass arguments to functions in expressions specified in the directive's att
...ve.html'
};
})
In directive template use it in following way:
<select ng-change="myFunction(selectedAmount)">
And then when you use the directive, pass the function like this:
<data-my-directive
data-my-function="setSelectedAmount">
</data-my-directive>
You pass t...
Why should hash functions use a prime number modulus?
...er of buckets. This is convenient and saves having to search around or pre-select a prime number of the right magnitude. So you rely on the hash function not to use even multipliers, which is generally a safe assumption. But you can still get occasional bad hashing behaviours based on hash functions...
How do I find Waldo with Mathematica?
...at should have Waldo in it. Exclude all other areas (e.g., for each area, select a circle twice as big as the average person size), and then run the process that @Heike laid out with removing all but red, and so on.
Any thoughts on how to code this?
Edit:
Thoughts on how to code this . . . e...
Batch script: how to check for admin rights
... after clicking on a start menu icon, then right click on the shortcut and select "Run As Administrator".
echo ##########################################################
echo.
PAUSE
EXIT /B 1
)
@echo ON
Works on WinXP --> Win8 (including 32/64 bit versions).
EDIT: 8/28/2012 Updated...