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Pig latin schema

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Pig latin schema

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Hello! My question is about Pig latin schema. Lets say we have two files: One with 200 fields (or columns) and other one 100 fields (or columns) and we wanna join them. Thats quite easy, unless Pig latin refuses to join them because they dont have valid schema. So question goes: Is there any easy way to assign schema, or do I have to manually type fieldone:chararray, fieldtwo:chararray etc. ? I hope not ..