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https://issues.apache.org/jira/browse/SPARK-28322?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16881694#comment-16881694
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Yuming Wang commented on SPARK-28322:
-------------------------------------
{{DIV}} and {{/}} are a little different:
{code:sql}
select 12345678901234567890 / 123;
?column?
--------------------
100371373180768845
(1 row)
select div(12345678901234567890, 123);
div
--------------------
100371373180768844
(1 row)
{code}
[https://github.com/postgres/postgres/blob/REL_12_BETA2/src/test/regress/expected/numeric.out#L1564-L1574]
> DIV support decimal type
> ------------------------
>
> Key: SPARK-28322
> URL: https://issues.apache.org/jira/browse/SPARK-28322
> Project: Spark
> Issue Type: Sub-task
> Components: SQL
> Affects Versions: 3.0.0
> Reporter: Yuming Wang
> Priority: Major
>
> Spark SQL:
> {code:sql}
> spark-sql> SELECT DIV(CAST(10 AS DECIMAL), CAST(3 AS DECIMAL));
> Error in query: cannot resolve '(CAST(10 AS DECIMAL(10,0)) div CAST(3 AS
> DECIMAL(10,0)))' due to data type mismatch: '(CAST(10 AS DECIMAL(10,0)) div
> CAST(3 AS DECIMAL(10,0)))' requires integral type, not decimal(10,0); line 1
> pos 7;
> 'Project [unresolvedalias((cast(10 as decimal(10,0)) div cast(3 as
> decimal(10,0))), None)]
> +- OneRowRelation
> {code}
> PostgreSQL:
> {code:sql}
> postgres=# SELECT DIV(CAST(10 AS DECIMAL), CAST(3 AS DECIMAL));
> div
> -----
> 3
> (1 row)
> {code}
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