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https://issues.apache.org/jira/browse/PIG-434?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Pradeep Kamath updated PIG-434:
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Description:
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}
was:
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}
> AND and OR do not give right results with nulls
> -----------------------------------------------
>
> 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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