Need to clarify how COUNT handles nulls
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Key: PIG-1626
URL: https://issues.apache.org/jira/browse/PIG-1626
Project: Pig
Issue Type: Bug
Components: documentation
Reporter: Olga Natkovich
Assignee: Corinne Chandel
Fix For: 0.8.0
The current documentation just states: "The COUNT function ignores NULL values.
If you want to include NULL values in the count computation, use COUNT_STAR. "
The new text should be something like
"The COUNT function follows syntax semantics and ignores nulls. What this means
is that a tuple in the bag will not be counted if the first field in this tuple
is NULL. If you want to include NULL values in the count computation, use
COUNT_STAR. "
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