Danny Chan created CALCITE-3250:

             Summary: Support nested collection type for  SqlDataTypeSpec
                 Key: CALCITE-3250
                 URL: https://issues.apache.org/jira/browse/CALCITE-3250
             Project: Calcite
          Issue Type: Sub-task
            Reporter: Danny Chan
            Assignee: Danny Chan

According to SQL-2011, collection type can be nested:

<array type> ::=
  <data type> ARRAY [ <left bracket or trigraph> <maximum cardinality> <right 
bracket or trigraph> ]

<maximum cardinality> ::=
  <unsigned integer>

int array array;
int multiset array;

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