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https://issues.apache.org/jira/browse/CALCITE-5795?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mihai Budiu updated CALCITE-5795:
---------------------------------
Description:
Consider this query (using the Babel parser for the :: cast notation from
Postgres)
{code:sql}
WITH v(x) AS (VALUES(0::numeric),(4.2)) SELECT x FROM v as v1(x)
{code}
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:
{code:sql}
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)
{code}
was:
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)
> 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
> Priority: Minor
>
> Consider this query (using the Babel parser for the :: cast notation from
> Postgres)
> {code:sql}
> WITH v(x) AS (VALUES(0::numeric),(4.2)) SELECT x FROM v as v1(x)
> {code}
> 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:
> {code:sql}
> 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)
> {code}
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