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https://issues.apache.org/jira/browse/CALCITE-3658?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jin Xing updated CALCITE-3658:
------------------------------
Description:
UPDATE clause like below
{code:java}
update emp set empno = empno + 1
{code}
will be converted to
{code:java}
LogicalTableModify(table=[[CATALOG, SALES, EMP]], operation=[UPDATE],
updateColumnList=[[EMPNO]], sourceExpressionList=[[+($cor0.EMPNO, 1)]],
flattened=[true])
LogicalProject(EMPNO=[$0], ENAME=[$1], JOB=[$2], MGR=[$3], HIREDATE=[$4],
SAL=[$5], COMM=[$6], DEPTNO=[$7], SLACKER=[$8], EXPR$0=[+($0, 1)])
LogicalTableScan(table=[[CATALOG, SALES, EMP]])
{code}
However the correlated variables should not exist in *sourceExpressionList*.
It also brings trouble when convert TableModify back to Sql string.
> TableModify of Update contains correlated variable by mistake.
> --------------------------------------------------------------
>
> Key: CALCITE-3658
> URL: https://issues.apache.org/jira/browse/CALCITE-3658
> Project: Calcite
> Issue Type: Improvement
> Reporter: Jin Xing
> Priority: Major
>
> UPDATE clause like below
> {code:java}
> update emp set empno = empno + 1
> {code}
> will be converted to
> {code:java}
> LogicalTableModify(table=[[CATALOG, SALES, EMP]], operation=[UPDATE],
> updateColumnList=[[EMPNO]], sourceExpressionList=[[+($cor0.EMPNO, 1)]],
> flattened=[true])
> LogicalProject(EMPNO=[$0], ENAME=[$1], JOB=[$2], MGR=[$3], HIREDATE=[$4],
> SAL=[$5], COMM=[$6], DEPTNO=[$7], SLACKER=[$8], EXPR$0=[+($0, 1)])
> LogicalTableScan(table=[[CATALOG, SALES, EMP]])
> {code}
> However the correlated variables should not exist in *sourceExpressionList*.
> It also brings trouble when convert TableModify back to Sql string.
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