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How can I convert m/d/yyyy to YYYY-MM-DD in a CSV file?

Posted on 2011-02-25
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Last Modified: 2012-05-11
Hi EEs,
  I'm working on converting and cleansing a database dump from an older FileMaker Pro database to import into MySQL (for a web project) and need a nice tidy way to convert the date format of m/d/yyyy to YYYY-MM-DD.  I know perl, sed and awk should be able to do the trick, but what I've found so far hasn't worked (definitely a syntax problem).  It'd be great if your solution was a perl script that could be run as "date-fmt.pl FILENAME", but even a simple sed command would be appreciated.  I'm dealing with a database that has over 230,000 entries and using OpenOffice extensions to change the format takes wayyyyy too long.

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Question by:digitaly
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6 Comments
 

Author Comment

by:digitaly
ID: 34984274
While I'm at it, if you can add the process in this sed command to the script, too, that'd be excellent.  No sweat if you can't or don't though.



sed -e 's/\"//g' -e 's/\\//g' -e 's/^/\"/' -e 's/$/\"/' -e 's/\t/\"\,\"/g'
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LVL 16

Expert Comment

by:sjklein42
ID: 34984515
perl script

while ( <> )
{
	# m/d/yyyy
	# YYYY-MM-DD
	while (/([0-9]+)\/([0-9]+)\/([0-9]+)/)
	{
	    $_ = $` . $3 . '-' . sprintf("%02d",$1) . '-' . sprintf("%02d",$2) . $';
	}

	print $_;
}

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Accepted Solution

by:
sjklein42 earned 2000 total points
ID: 34984604
Including your sed commands:

while ( <> )
{
	# m/d/yyyy
	# YYYY-MM-DD
	while (/([0-9]+)\/([0-9]+)\/([0-9]+)/)
	{
	    $_ = $` . $3 . '-' . sprintf("%02d",$1) . '-' . sprintf("%02d",$2) . $';
	}

	s/\"//g;
	s/\\//g;
	s/^/\"/;
	s/$/\"/;
	s/\t/\"\,\"/g;
	
	print $_;
}

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Author Comment

by:digitaly
ID: 34985214
Awesome!  Worked great!  Thanks a load!!! :-)
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Author Closing Comment

by:digitaly
ID: 34985217
Excellent, accurate and FAST response.  THANK YOU!!!
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LVL 16

Expert Comment

by:sjklein42
ID: 34985248
thanks
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