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Swapping column values in MySQL
...d to deal with the same and I'll summarize my findings.
The UPDATE table SET X=Y, Y=X approach obviously doesn't work, as it'll just set both values to Y.
Here's a method that uses a temporary variable. Thanks to Antony from the comments of http://beerpla.net/2009/02/17/swapping-column-values-in-m...
Uri to default sound notification?
...RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
builder.setSound(uri);
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SQL how to increase or decrease one for a int column in one command
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To answer the first:
UPDATE Orders SET Quantity = Quantity + 1 WHERE ...
To answer the second:
There are several ways to do this. Since you did not specify a database, I will assume MySQL.
INSERT INTO table SET x=1, y=2 ON DUPLICATE KEY UPDATE x=x+1, y=y...
How to specialize std::hash::operator() for user-defined type in unordered containers?
To support user-defined key types in std::unordered_set<Key> and std::unordered_map<Key, Value>
one has to provide operator==(Key, Key) and a hash functor:
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JPQL IN clause: Java-Arrays (or Lists, Sets…)?
I would like to load all objects that have a textual tag set to any of a small but arbitrary number of values from our database. The logical way to go about this in SQL would be to build an "IN" clause. JPQL allows for IN, but it seems to require me to specify every single parameter to IN directly (...
how to set a value for a span using JQuery
How to set a value for a span using JQuery..
5 Answers
5
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How do you programmatically set an attribute?
Suppose I have a python object x and a string s , how do I set the attribute s on x ? So:
4 Answers
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How to get folder path from file path with CMD
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So if you want a cmd script to set the working directory to the location of the script: cd /d "%~dp0" (from stackoverflow.com/questions/4451668)
– Nigel Touch
Mar 20 '14 at 15:47
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What is meant by Ems? (Android TextView)
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android:ems or setEms(n) sets the width of a TextView to fit a text of n 'M' letters regardless of the actual text extension and text size. See wikipedia Em unit
but only when the layout_width is set to "wrap_content". Other layout_width v...
Linux: is there a read or recv from socket with timeout?
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You can use the setsockopt function to set a timeout on receive operations:
SO_RCVTIMEO
Sets the timeout value that specifies
the maximum amount of time an input
function waits until it completes. It
accepts a timeval structur...