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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 ------------------------------------------------------------------------------ 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: