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https://issues.apache.org/jira/browse/HIVE-15229?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15977180#comment-15977180
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Vineet Garg commented on HIVE-15229:
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[~cartershanklin] I don't think this patch will help much for supporting
quantified comparison predicates since this patch is catering to only 'like
any'. For quantified comparison predicate we will need more generic UDF to deal
with all datatypes and operators or may be rewrite it to avoid adding UDF.
Is there a JIRA for supporting quantified comparison predicates?
> 'like any' and 'like all' operators in hive
> -------------------------------------------
>
> Key: HIVE-15229
> URL: https://issues.apache.org/jira/browse/HIVE-15229
> Project: Hive
> Issue Type: New Feature
> Components: Operators
> Reporter: Simanchal Das
> Assignee: Simanchal Das
> Priority: Minor
> Attachments: HIVE-15229.1.patch, HIVE-15229.2.patch,
> HIVE-15229.3.patch, HIVE-15229.4.patch, HIVE-15229.5.patch
>
>
> In Teradata 'like any' and 'like all' operators are mostly used when we are
> matching a text field with numbers of patterns.
> 'like any' and 'like all' operator are equivalents of multiple like operator
> like example below.
> {noformat}
> --like any
> select col1 from table1 where col2 like any ('%accountant%', '%accounting%',
> '%retail%', '%bank%', '%insurance%');
> --Can be written using multiple like condition
> select col1 from table1 where col2 like '%accountant%' or col2 like
> '%accounting%' or col2 like '%retail%' or col2 like '%bank%' or col2 like
> '%insurance%' ;
> --like all
> select col1 from table1 where col2 like all ('%accountant%', '%accounting%',
> '%retail%', '%bank%', '%insurance%');
> --Can be written using multiple like operator
> select col1 from table1 where col2 like '%accountant%' and col2 like
> '%accounting%' and col2 like '%retail%' and col2 like '%bank%' and col2 like
> '%insurance%' ;
> {noformat}
> Problem statement:
> Now a days so many data warehouse projects are being migrated from Teradata
> to Hive.
> Always Data engineer and Business analyst are searching for these two
> operator.
> If we introduce these two operator in hive then so many scripts will be
> migrated smoothly instead of converting these operators to multiple like
> operators.
> Result:
> 1. 'LIKE ANY' operator return true if a text(column value) matches to any
> pattern.
> 2. 'LIKE ALL' operator return true if a text(column value) matches to all
> patterns.
> 3. 'LIKE ANY' and 'LIKE ALL' returns NULL not only if the expression on the
> left hand side is NULL, but also if one of the pattern in the list is NULL.
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