Difference between revisions of "Freeside:1.7:Documentation:Dates"

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== Conversion in PostgreSQL ==
 
== Conversion in PostgreSQL ==
  
−
* Conversion from UNIX time (substitute in your own time zone, date field and output field name): <pre><nowiki>
+
* Conversion from UNIX time (substitute in your own time zone, date field and output field name):  
 +
<pre><nowiki>
 
'epoch'::TIMESTAMP WITH TIME ZONE AT TIME ZONE 'PST' + _date_field * '1 second'::INTERVAL AS output_fieldname
 
'epoch'::TIMESTAMP WITH TIME ZONE AT TIME ZONE 'PST' + _date_field * '1 second'::INTERVAL AS output_fieldname
 +
</nowiki></pre>
 +
 +
* Conversion to UNIX time:
 +
<pre><nowiki>
 +
EXTRACT( EPOCH FROM date_column )
 +
</nowiki></pre>
 +
 +
== Conversion in MySQL ==
 +
 +
* Conversion to UNIX time:
 +
<pre><nowiki>
 +
UNIX_TIMESTAMP( date_column )
 
</nowiki></pre>
 
</nowiki></pre>
  

Latest revision as of 17:08, 3 December 2007

Introduction

Freeside stores most dates as "Unix time" - the number of seconds elapsed since midnight UTC on the morning of January 1, 1970, not counting leap seconds.

Conversion in Perl

  • Conversion from UNIX time: see the localtime function or the Date::Format module.
  • Conversion to UNIX time: see the Date::Parse or Time::Local modules, among others.

Conversion in PostgreSQL

  • Conversion from UNIX time (substitute in your own time zone, date field and output field name): 
'epoch'::TIMESTAMP WITH TIME ZONE AT TIME ZONE 'PST' + _date_field * '1 second'::INTERVAL AS output_fieldname
  • Conversion to UNIX time:
EXTRACT( EPOCH FROM date_column )

Conversion in MySQL

  • Conversion to UNIX time:
UNIX_TIMESTAMP( date_column )

Conversion in Crystal Reports

  • Download the U2lwin32 user function library
  • Use the provided "EpochToDateTime" function
  • Works with Crystal Reports 11 by manually installing the U2lwin32.dll to Business Objects\Common\3.5\bin
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