NobiGo commented on a change in pull request #2686:
URL: https://github.com/apache/calcite/pull/2686#discussion_r784755748
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File path: core/src/test/resources/org/apache/calcite/test/RelOptRulesTest.xml
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@@ -9004,6 +9005,38 @@ LogicalProject(EXPR$0=[$1], EXPR$1=[$0])
LogicalTableScan(table=[[CATALOG, SALES, EMP]])
LogicalProject(ENAME=[$0])
LogicalTableScan(table=[[CATALOG, SALES, BONUS]])
+]]>
+ </Resource>
+ </TestCase>
+ <TestCase name="testPushProjectPastLeftJoin2">
+ <Resource name="sql">
+ <![CDATA[select coalesce(d.name, b.job, '')
+from emp e
+left join bonus b on e.ename = b.ename
+left join dept d on e.deptno = d.deptno]]>
+ </Resource>
+ <Resource name="planBefore">
+ <![CDATA[
+LogicalProject(EXPR$0=[CASE(IS NOT NULL($14), CAST($14):VARCHAR(10) NOT NULL,
IS NOT NULL($10), CAST($10):VARCHAR(10) NOT NULL, '':VARCHAR(10))])
+ LogicalJoin(condition=[=($7, $13)], joinType=[left])
+ LogicalJoin(condition=[=($1, $9)], joinType=[left])
+ LogicalTableScan(table=[[CATALOG, SALES, EMP]])
+ LogicalTableScan(table=[[CATALOG, SALES, BONUS]])
+ LogicalTableScan(table=[[CATALOG, SALES, DEPT]])
+]]>
+ </Resource>
+ <Resource name="planAfter">
+ <![CDATA[
+LogicalProject(EXPR$0=[CASE(IS NOT NULL($4), CAST($4):VARCHAR(10) NOT NULL,
$1, $2, '':VARCHAR(10))])
+ LogicalJoin(condition=[=($0, $3)], joinType=[left])
+ LogicalProject(DEPTNO=[$1], EXPR$0=[IS NOT NULL($3)],
EXPR$1=[CAST($3):VARCHAR(10) NOT NULL])
Review comment:
Hi, Please try validate this SQL result in out.iq and submit the test in
this PR? I don't know.
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