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MySQL InnoDB not releasing disk space after deleting data rows from table
I have one MySQL table using the InnoDB storage engine; it contains about 2M data rows. When I deleted data rows from the table, it did not release allocated disk space. Nor did the size of the ibdata1 file reduce after running the optimize table command.
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sed one-liner to convert all uppercase to lowercase?
I have a textfile in which some words are printed in ALL CAPS. I want to be able to just convert everything in the textfile to lowercase, using sed . That means that the first sentence would then read, 'i have a textfile in which some words are printed in all caps.'
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store and retrieve a class object in shared preference
In Android can we store an object of a class in shared preference and retrieve the object later?
13 Answers
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How do I pass data between Activities in Android application?
I have a scenario where, after logging in through a login page, there will be a sign-out button on each activity .
51 An...
Compare if BigDecimal is greater than zero
How can I compare if BigDecimal value is greater than zero?
6 Answers
6
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Display Animated GIF
I want to display animated GIF images in my aplication.
As I found out the hard way Android doesn't support animated GIF natively.
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Does MySQL ignore null values on unique constraints?
I have an email column that I want to be unique. But I also want it to accept null values. Can my database have 2 null emails that way?
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How do I determine if a port is open on a Windows server? [closed]
I'm trying to install a site under an alternative port on a server, but the port may be closed by a firewall. Is there a way to ping out or in, on a specific port, to see if it is open?
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How do I call one constructor from another in Java?
Is it possible to call a constructor from another (within the same class, not from a subclass)? If yes how? And what could be the best way to call another constructor (if there are several ways to do it)?
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Why is nginx responding to any domain name?
I have nginx up and running with a Ruby/Sinatra app and all is well. However, I'm now trying to have a second application running from the same server and I noticed something weird. First, here's my nginx.conf:
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