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How to get the max of two values in MySQL?
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To get the maximum value of a column across a set of rows:
SELECT MAX(column1) FROM table; -- expect one result
To get the maximum value of a set of columns, literals, or variables for each row:
SELECT GREATEST(column1, 1, 0, @val) FROM table; -- expect many results
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How to get the host name of the current machine as defined in the Ansible hosts file?
I'm setting up an Ansible playbook to set up a couple servers. There are a couple of tasks that I only want to run if the current host is my local dev host, named "local" in my hosts file. How can I do this? I can't find it anywhere in the documentation.
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Why does sudo change the PATH?
...'sudo env PATH=$PATH'
Note the above will work for commands that don't reset the $PATH themselves.
However `su' resets it's $PATH so you must use -p to tell it not to. I.E.:
sudo su -p
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i...
What is a Proxy in Doctrine 2?
... protected $firstname;
@Column protected $lastname;
// bunch of setters/getters here
}
DQL query:
SELECT u.id, u.username FROM Entity\User u WHERE u.id = :id
As you can see this query doesn't return firstname and lastname properties, therefore you cannot create User object. Creation o...
UITableview: How to Disable Selection for Some Rows but Not Others
...dexPath when touched by the user. To avoid this, do as suggested below and set.
cell.userInteractionEnabled = NO;
instead. Also note you may want to set cell.textLabel.enabled = NO; to gray out the item.
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Admob Error in Eclipse for android:configChanges
...f the Android SDK and that you're compiling against at least Android v3.2 (set target in default.properties to android-13).
have a look here: https://developers.google.com/admob/android/quick-start
So I think your tools version is not updated to at least Version 13.
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What is App.config in C#.NET? How to use it?
...of information.
Overview (MSDN)
Connection String Configuration (MSDN)
Settings can be configured using built-in configuration sections such as connectionStrings or appSettings. You can add your own custom configuration sections; this is an advanced topic, but very powerful for building strongly...
BigDecimal setScale and round
...arguments, and therefore scale is never specified in the first statement.
setScale() obviously accepts scale as an argument, as well as RoundingMode, however precision is never specified in the second statement.
If you move the decimal point one place to the right, the difference will become clear...
Remove underline from links in TextView - Android
...);
span = new URLSpanNoUnderline(span.getURL());
s.setSpan(span, start, end, 0);
}
textView.setText(s);
}
This requires a customized version of URLSpan which doesn't enable the TextPaint's "underline" property:
private class URLSpanNoUnderline exten...
Escaping ampersand character in SQL string
...certain row by name in my sql database and it has an ampersand. I tried to set an escape character and then escape the ampersand, but for some reason this isn't working and I'm uncertain as to what exactly my problem is.
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