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https://issues.apache.org/jira/browse/HIVE-24614?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17352265#comment-17352265
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junnan.yang commented on HIVE-24614:
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# This is similar to HIVE-25169 , may be the patch in HIVE-25169 can resolve
your problem
> using coalesce via vector,when date type of column are different between
> source and target,the result of target is zero
> -----------------------------------------------------------------------------------------------------------------------
>
> Key: HIVE-24614
> URL: https://issues.apache.org/jira/browse/HIVE-24614
> Project: Hive
> Issue Type: Bug
> Components: Vectorization
> Affects Versions: 3.1.2
> Reporter: taoyuyin
> Priority: Major
>
> set hive.vectorized.execution.enabled=true;
>
> CREATE TABLE `tmp.tmp_test_vectorization_source`(
> `rn` string,
> `val_1` int,
> `val_2` bigint)
> stored as parquet;
>
> insert into table `tmp.tmp_test_vectorization_source`
> values('line1',1000,10001),('line1',2000,20001);
>
> select rn,val_1,val_2 from tmp.tmp_test_vectorization_source t;
>
> +---------+-------++--------
> |rn|val_1|val_2|
> +---------+-------++--------
> |line1|1000|10001|
> |line1|2000|20001|
> +---------+-------++--------
>
> CREATE TABLE `tmp.tmp_test_vectorization_target`(
> `rn` string,
> `val_1` bigint,
> `val_2` int)
> stored as parquet;
>
> insert into table tmp.tmp_test_vectorization_target
> select
> rn,
> coalesce(val_1,0),
> coalesce(val_2,0)
> from tmp.tmp_test_vectorization_source;
>
> select rn,val_1,val_2 from tmp.tmp_test_vectorization_target t;
>
> +---------+-------++--------
> |rn|val_1|val_2|
> +---------+-------++--------
> |line1|0|0|
> |line1|0|0|
> +---------+-------++--------
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