[ https://issues.apache.org/jira/browse/PIG-927?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12753249#action_12753249 ]
Alan Gates commented on PIG-927: -------------------------------- It seems that the right semantic would be to follow SQL consistently, as that is what we say we do. > null should be handled consistently in Join > ------------------------------------------- > > Key: PIG-927 > URL: https://issues.apache.org/jira/browse/PIG-927 > Project: Pig > Issue Type: Bug > Affects Versions: 0.3.0 > Reporter: Pradeep Kamath > > Currenlty Pig mostly follows SQL semantics for handling null. However there > are certain cases where pig may need to handle nulls correctly. One example > is the join - joins on single keys results in null keys not matching to > produce an output. However if the join is on >1 keys, in the key tuple, if > one of the values is null, it still matches with another key tuple which has > a null for that value. We need to decide the right semantics here. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.