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Maximum number of records in a MySQL database table
What is the upper limit of records for MySQL database table. I'm wondering about autoincrement field. What would happen if I add milions of records? How to handle this kind of situations?
Thx!
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Swap key with value JSON
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edited Oct 16 '19 at 13:00
KostasX
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The role of #ifdef and #ifndef
... pair will be left in or removed by the pre-processor depending on the condition. ifdef means "if the following is defined" while ifndef means "if the following is not defined".
So:
#define one 0
#ifdef one
printf("one is defined ");
#endif
#ifndef one
printf("one is not defined ");
#endif...
How to pretty print XML from Java?
I have a Java String that contains XML, with no line feeds or indentations. I would like to turn it into a String with nicely formatted XML. How do I do this?
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How to get the first column of a pandas DataFrame as a Series?
...his after June 2017, ix has been deprecated in pandas 0.20.2, so don't use it. Use loc or iloc instead. See comments and other answers to this question.
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Is there a way to make a DIV unselectable?
...le selection some time back: Disabling Selection in jQuery. You can invoke it through $('.button').disableSelection();
Alternately, using CSS (cross-browser):
.button {
user-select: none;
-moz-user-select: none;
-khtml-user-select: none;
-webkit-user-select: none;
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How do I remove all specific characters at the end of a string in PHP?
How do I remove the last character only if it's a period?
9 Answers
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Scala: Nil vs List()
...))
true
scala> println (Nil equals List())
true
scala> System.identityHashCode(Nil)
374527572
scala> System.identityHashCode(List())
374527572
Nil is more idiomatic and can be preferred in most cases.
Questions?
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UIGestureRecognizer on UIImageView
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UIPinchGestureRecognizer *pgr = [[UIPinchGestureRecognizer alloc]
initWithTarget:self action:@selector(handlePinch:)];
pgr.delegate = self;
[imageView addGestureRecognizer:pgr];
[pgr release];
:
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- (void)handlePinch:(UIPinchGestureRecognizer *)pinchGestureRecognizer
{
//handle pinch...
}
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How to unzip a file using the command line? [closed]
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The first URL listed is a true 16-bit application, thus does not work on x64 operating systems. Just a heads up.
– Mark Henderson
Sep 11 '13 at 4:42
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