[jira] [Created] (CALCITE-5570) Support nested map type for SqlDataTypeSpec

["Sergey Nuyanzin (Jira)" <ji...@apache.org>]

Sergey Nuyanzin created CALCITE-5570:
----------------------------------------

             Summary: Support nested map type for SqlDataTypeSpec
                 Key: CALCITE-5570
                 URL: https://issues.apache.org/jira/browse/CALCITE-5570
             Project: Calcite
          Issue Type: Improvement
          Components: core
            Reporter: Sergey Nuyanzin


There was added a similar support for arrays/multisets at https://issues.apache.org/jira/browse/CALCITE-3250
however there is no support for maps so far.

The issue is to add such support.

 

I think I'd like to clarify is syntax for maps since it has 2 internal subtypes for keys and values may be something similar to ROW with delimiter like
{code:sql}
SELECT CAST(NULL AS MAP(INT, INT));
-- or with square brackets similar to map constructor
SELECT CAST(NULL AS MAP[INT, INT]);
-- or with angle (Flink syntax)
SELECT CAST(NULL AS MAP<INT, INT>);
{code}
 

 



--
This message was sent by Atlassian Jira
(v8.20.10#820010)