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https://issues.apache.org/jira/browse/CALCITE-3250?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16909535#comment-16909535
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Danny Chan commented on CALCITE-3250:
-------------------------------------
Indeed, very sorry about that, i should have made the issue title and commit
message more accurate.
> Support nested collection type for SqlDataTypeSpec
> ---------------------------------------------------
>
> Key: CALCITE-3250
> URL: https://issues.apache.org/jira/browse/CALCITE-3250
> Project: Calcite
> Issue Type: Sub-task
> Components: core
> Affects Versions: 1.20.0
> Reporter: Danny Chan
> Assignee: Danny Chan
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.21.0
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> According to SQL-2011, collection type can be nested:
> {code:sql}
> <array type> ::=
> <data type> ARRAY [ <left bracket or trigraph> <maximum cardinality> <right
> bracket or trigraph> ]
> <maximum cardinality> ::=
> <unsigned integer>
> {code}
> *Example*:
> {code:sql}
> int array array;
> int multiset array;
> {code}
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