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https://issues.apache.org/jira/browse/CALCITE-4683?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17491943#comment-17491943
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xiong duan commented on CALCITE-4683:
-------------------------------------
[~yanjing.wang]
1) How about we change the issue summary to( capitalize the keyword)
"IN-list converted to JOIN throws type mismatch exception"?
2) Please reformat the description log by 'Preformatted'.
> In-list to join causes field datatypes not matched
> --------------------------------------------------
>
> Key: CALCITE-4683
> URL: https://issues.apache.org/jira/browse/CALCITE-4683
> Project: Calcite
> Issue Type: Bug
> Components: core
> Affects Versions: 1.26.0, 1.27.0
> Environment: jdk8
>
> Reporter: yanjing.wang
> Assignee: yanjing.wang
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.30.0
>
> Time Spent: 50m
> Remaining Estimate: 0h
>
> The sql query is
> {code:java}
> SELECT * FROM (
> SELECT '20210101' AS dt, deptno
> FROM emp
> GROUP BY deptno
> ) t
> WHERE cast(deptno as varchar) in ('1')
> {code}
> When Calcite converts the in list to a join, the original leave rel will be
> replaced by a new rel, but the new rel hasn't been set as a leave rel, This
> will cause mismatched field type.
> Finally, the query results
> java.lang.AssertionError: Conversion to relational algebra failed to preserve
> datatypes:
> validated type:
> RecordType(CHAR(8) NOT NULL dt, INTEGER deptno) NOT NULL
> converted type:
> RecordType(INTEGER dt, INTEGER deptno) NOT NULL
> rel:
> LogicalProject(dt=[$0], deptno=[$1])
> LogicalJoin(condition=[=($2, $3)], joinType=[inner])
> LogicalProject(dt=['20210101'], deptno=[$0], deptno0=[CAST($0):VARCHAR])
> LogicalAggregate(group=[\{0}])
> LogicalProject(deptno=[$1])
> HiveTableScan(table=[[default, emp]])
> LogicalAggregate(group=[\{0}])
> LogicalValues(tuples=[[\{ '1' }]])
> at
> org.apache.calcite.sql2rel.SqlToRelConverter.checkConvertedType(SqlToRelConverter.java:467)
> at
> org.apache.calcite.sql2rel.SqlToRelConverter.convertQuery(SqlToRelConverter.java:582)
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