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How to use GROUP BY to concatenate strings in MySQL?

...e GROUP BY id; http://dev.mysql.com/doc/refman/5.0/en/group-by-functions.html#function_group-concat From the link above, GROUP_CONCAT: This function returns a string result with the concatenated non-NULL values from a group. It returns NULL if there are no non-NULL values. ...
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Alter a MySQL column to be AUTO_INCREMENT

...he MySQL documentation: http://dev.mysql.com/doc/refman/5.1/en/alter-table.html for the modify column syntax and http://dev.mysql.com/doc/refman/5.1/en/create-table.html for more information about specifying columns. share ...
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How to properly URL encode a string in PHP?

...st a special variant of the Percent-Encoding and is only applied to encode HTML form data. – Gumbo Jan 20 '11 at 8:44 1 ...
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In which language are the Java compiler and JVM written?

...The HotSpot JVM is written in C++ - www2.research.att.com/~bs/applications.html – devdimi Mar 19 '12 at 11:05 5 ...
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Implementing slicing in __getitem__

...slice__ for python 2.X versions. see docs.python.org/2/reference/datamodel.html#object.__getslice__ – gregorySalvan Aug 28 '14 at 5:17 ...
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Cleanest and most Pythonic way to get tomorrow's date?

...me.strftime handles leap seconds: see Note 2: docs.python.org/library/time.html#time.strftime and Note 3: docs.python.org/library/datetime.html#strftime-behavior – Mark Rushakoff Oct 2 '09 at 0:18 ...
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What does ellipsize mean in android?

...lags will override the value of singleLine. Check out the docs at R.attr.html#singleLine – Filipe Bezerra de Sousa Sep 8 '16 at 12:24 ...
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How to echo or print an array in PHP?

...y unformatted bounds of data. To see it formatted you should then view the html page source. – j.c Sep 29 '16 at 9:00 add a comment  |  ...
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JavaScript global event mechanism

...g, url, line, col, error) { // Note that col & error are new to the HTML 5 spec and may not be // supported in every browser. It worked for me in Chrome. var extra = !col ? '' : '\ncolumn: ' + col; extra += !error ? '' : '\nerror: ' + error; // You can view the information in a...
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Finding element's position relative to the document

... No it does not, when any parent (especially html element!!!) has margins, paddings or borders. – Flash Thunder Nov 20 '14 at 15:10 ...