AND and OR do not give right results with nulls
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Key: PIG-434
URL: https://issues.apache.org/jira/browse/PIG-434
Project: Pig
Issue Type: Bug
Affects Versions: types_branch
Reporter: Pradeep Kamath
Fix For: types_branch
Here are the truth tables for AND and OR - currently we do not short circuit
and return a null if either operand is null (for both AND and OR)
{code}
// truth table for AND
// t = true, n = null, f = false
// AND t n f
// t t n f
// n n n f
// f f f f
// truth table for OR
// t = true, n = null, f = false
// OR t n f
// t t t t
// n t n n
// f t n f
{code}
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