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Posted to commits@pig.apache.org by Apache Wiki <wi...@apache.org> on 2008/09/16 23:22:16 UTC

[Pig Wiki] Trivial Update of "PigFaq" by DavidPhillips

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The following page has been changed by DavidPhillips:
http://wiki.apache.org/pig/PigFaq

The comment on the change is:
turn #7 into a question

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  Pig does support regular expression matching via `matches` keyword. It uses java.util.regexp matches which means your pattern has to match the entire string (ie if your string is "hi fred" and you want to find "fred" you have to give a pattern of ".*fred" not "fred").
  
- '''7. How to prevent failure if some records don't have the needed number of columns.'''
+ '''7. How do I prevent failure if some records don't have the needed number of columns?'''
  
  You can filter away those records by including the following in your Pig program: