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https://issues.apache.org/jira/browse/HIVE-11880?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15267887#comment-15267887
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WangMeng commented on HIVE-11880:
---------------------------------
Thanks [~aihuaxu].
> filter bug of UNION ALL when hive.ppd.remove.duplicatefilters=true and
> filter condition is type incompatible column
> ---------------------------------------------------------------------------------------------------------------------
>
> Key: HIVE-11880
> URL: https://issues.apache.org/jira/browse/HIVE-11880
> Project: Hive
> Issue Type: Bug
> Components: Logical Optimizer
> Affects Versions: 1.2.1
> Reporter: WangMeng
> Assignee: WangMeng
> Attachments: HIVE-11880.01.patch, HIVE-11880.02.patch,
> HIVE-11880.03.patch, HIVE-11880.04.patch
>
>
> For UNION ALL , when an union operator is constant column (such as '0L',
> BIGINT Type) and its corresponding column has incompatible type (such as INT
> type).
> Query with filter condition on type incompatible column on this UNION ALL
> will cause IndexOutOfBoundsException.
> Such as TPC-H table "orders",in the following query:
> Type of 'orders'.'o_custkey' is INT normally, while the type of
> corresponding constant column "0" is BIGINT( `0L AS `o_custkey` ).
> This following query (with filter "type incompatible column 'o_custkey' ")
> will fail with java.lang.IndexOutOfBoundsException :
> {code}
> set hive.cbo.enable=false;
> set hive.ppd.remove.duplicatefilters=true;
> CREATE TABLE `orders`(
> `o_orderkey` int,
> `o_custkey` int,
> `o_orderstatus` string,
> `o_totalprice` double,
> `o_orderdate` string,
> `o_orderpriority` string,
> `o_clerk` string,
> `o_shippriority` int,
> `o_comment` string);
> SELECT o_orderkey
> FROM (
> SELECT `o_orderkey` ,
> `o_custkey`
> FROM `orders`
> UNION ALL
> SELECT `o_orderkey`,
> 0L AS `o_custkey`
> FROM `orders`) `oo`
> WHERE o_custkey<10;
> {code}
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