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Restrict varchar() column to specific values?
...n. For
example, the range of values for a
salary column can be limited by
creating a CHECK constraint that
allows for only data that ranges from
$15,000 through $100,000. This
prevents salaries from being entered
beyond the regular salary range.
You want something like:
ALTER TABLE ...
How to create an array of 20 random bytes?
How can I create an array of 20 random bytes in Java?
6 Answers
6
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How to do Mercurial's 'hg remove' for all missing files?
...gotten at the next commit.)
The flags are well-documented elsewhere (e.g. by the hg command itself), but in brief:
-n means "filename only"
-d means "select files that have been deleted"
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OnCreateOptionsMenu() not called in Fragment
...e,but app crashes with 11-27 01:55:34.468: E/AndroidRuntime(12294): Caused by: java.lang.ClassCastException: com.android.internal.view.menu.MenuItemImpl cannot be cast to android.widget.SearchView
– Android_programmer_office
Nov 26 '13 at 20:26
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What is the best way to deal with the NSDateFormatter locale “feechur”?
...teStyle properties - this way you're not having an explicit dateFormat set by yourself, thus falsely assuming that format will be used.
This means UI is driven by user preferences (am/pm vs 24 hour, and date strings formatted correctly to user choice - from iOS settings), whereas dates that are "c...
jQuery slideUp().remove() doesn't seem to show the slideUp animation before remove occurs
...
Might be able to fix it by putting the call to remove in a callback arg to slideUp?
e.g
selectedLi.slideUp("normal", function() { $(this).remove(); } );
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Uninstall old versions of Ruby gems
I have several versions of a Ruby gem:
6 Answers
6
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Why would one omit the close tag?
...gateway, and redirect user to a specific URL after successful confirmation by the payment processor. If some kind of PHP error, even a warning, or an excess line ending happens, the payment may remain unprocessed and the user may still seem unbilled. This is also one of the reasons why needless redi...
Why does changing the returned variable in a finally block not change the return value?
...value of s at the time the return statement executes is the value returned by the method. The fact that the finally clause later changes the value of s (after the return statement completes) does not (at that point) change the return value.
Note that the above deals with changes to the value of s it...
Is returning null bad design? [closed]
...r one pointers to objects. (That's certainly how it's explicitly modelled by Haskell's Maybe in those cases, and is all the better for doing so.)
– Andrzej Doyle
Aug 6 '12 at 14:37
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