[jira] [Created] (CALCITE-5795) Type inference for VALUES with numeric values infers incorrect scale

["Mihai Budiu (Jira)" <ji...@apache.org>]

Mihai Budiu created CALCITE-5795:
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             Summary: Type inference for VALUES with numeric values infers incorrect scale
                 Key: CALCITE-5795
                 URL: https://issues.apache.org/jira/browse/CALCITE-5795
             Project: Calcite
          Issue Type: Bug
          Components: core
    Affects Versions: 1.34.0
            Reporter: Mihai Budiu


Consider this query (using the Babel parser for the :: cast notation from Postgres)

WITH v(x) AS (VALUES(0::numeric),(4.2)) SELECT x FROM v as v1(x)

Calcite simplifies this to 0, 4, simplified at compilation time.

However, Postgres returns 0, 4.2, as expected.

It seems that this happens because the type inference for VALUES infers a scale of 0.

Note that the following variants of the query give correct results:

WITH v(x) AS (VALUES(0::numeric),(4.2::numeric)) SELECT x FROM v as v1(x)

WITH v(x) AS (VALUES(0),(4.2)) SELECT x FROM v as v1(x)



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