摘要:
Flatten OperatorThe FLATTEN operator looks like a UDF syntactically, but it is actually an operator that changes the structure of tuples and bags in a... 阅读全文
摘要:
Example: Nested BlockSuppose we have relations A and B. Note that relation B contains an inner bag.A = LOAD 'data' AS (url:chararray,outlink:chararray... 阅读全文