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https://issues.apache.org/jira/browse/IMPALA-9330?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Work on IMPALA-9330 started by Quanlong Huang.
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> Support masking queries containing correlated collection references
> -------------------------------------------------------------------
>
> Key: IMPALA-9330
> URL: https://issues.apache.org/jira/browse/IMPALA-9330
> Project: IMPALA
> Issue Type: Improvement
> Reporter: Quanlong Huang
> Assignee: Quanlong Huang
> Priority: Critical
>
> Let's say table complextypestbl (id bigint, int_arr array<int>) has column
> masking policy on id: "id => id * 100". The following query is not rewritten
> correctly:
> {code:sql}
> select t.id, a.pos, a.item from complextypestbl t, t.int_arr a;
> {code}
> Because its AST will be rewritten to the AST of
> {code:sql}
> select t.id, a.pos, a.item from (
> select cast(id * 100 as BIGINT) id
> from complextypestbl
> ) t, t.int_arr a;
> {code}
> Currently, the analyzer can't resolve "t.int_arr" correctly.
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