[jira] [Created] (FLINK-17681) TableEnvironment fromValues not work with map type and SQL

["Jingsong Lee (Jira)" <ji...@apache.org>]

Jingsong Lee created FLINK-17681:
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             Summary: TableEnvironment fromValues not work with map type and SQL
                 Key: FLINK-17681
                 URL: https://issues.apache.org/jira/browse/FLINK-17681
             Project: Flink
          Issue Type: Bug
          Components: Table SQL / API
            Reporter: Jingsong Lee
             Fix For: 1.11.0


{code:java}
Map<Integer, Integer> mapData = new HashMap<>();
      mapData.put(1, 1);
      mapData.put(2, 2);
      Row row = Row.of(mapData);
      tEnv().createTemporaryView("values_t", tEnv().fromValues(Collections.singletonList(row)));
      Iterator<Row> iter = tEnv().executeSql("select * from values_t").collect();

      List<Row> results = new ArrayList<>();
      while (iter.hasNext()) {
         results.add(iter.next());
      }
      System.out.println(results);
{code}
Not work, will occur exception:
{code:java}
java.lang.AssertionError: Conversion to relational algebra failed to preserve datatypes:
validated type:
RecordType((INTEGER NOT NULL, INTEGER NOT NULL) MAP f0) NOT NULL
converted type:
RecordType((INTEGER NOT NULL, INTEGER NOT NULL) MAP NOT NULL f0) NOT NULL
{code}
If change to {{Iterator<Row> iter = tEnv().from("values_t").execute().collect();}} will work.



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