[jira] [Created] (BEAM-5056) [SQL] Nullability of aggregation expressions isn't inferred properly

["Gleb Kanterov (JIRA)" <ji...@apache.org>]

Gleb Kanterov created BEAM-5056:
-----------------------------------

             Summary: [SQL] Nullability of aggregation expressions isn't inferred properly
                 Key: BEAM-5056
                 URL: https://issues.apache.org/jira/browse/BEAM-5056
             Project: Beam
          Issue Type: Bug
          Components: dsl-sql
            Reporter: Gleb Kanterov
            Assignee: Xu Mingmin


Given schema and rows:
{code:java}
Schema schema =
    Schema.builder()
        .addNullableField("f_int1", Schema.FieldType.INT32)
        .addNullableField("f_int2", Schema.FieldType.INT32)
        .build();

List<Row> rows =
    TestUtils.RowsBuilder.of(schema)
        .addRows(null, null)
        .getRows();
{code}
Following query fails:
{code:sql}
SELECT AVG(f_int1) FROM PCOLLECTION GROUP BY f_int2
{code}
{code:java}
Caused by: java.lang.IllegalArgumentException: Field EXPR$0 is not nullable{code}
 

 



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