liukun4515 opened a new issue, #3557: URL: https://github.com/apache/arrow-datafusion/issues/3557
**Is your feature request related to a problem or challenge? Please describe what you are trying to do.** A clear and concise description of what the problem is. Ex. I'm always frustrated when [...] (This section helps Arrow developers understand the context and *why* for this feature, in addition to the *what*) When I do https://github.com/apache/arrow-datafusion/pull/3396, the `type coercion` should be first do before other optimization. But for the recursion subquery, we can't do the type coercion before generated the subquery sub expr or plan. like in this test `correlated_recursive_scalar_subquery` If I move the type coercion to the first rule of the optimizer, i will get the changes ``` Sort: #customer.c_custkey ASC NULLS LAST Projection: #customer.c_custkey Filter: CAST(#customer.c_acctbal AS Decimal128(25, 2)) < #__sq_2.__value Inner Join: #customer.c_custkey = #__sq_2.o_custkey TableScan: customer projection=[c_custkey, c_acctbal] Projection: #orders.o_custkey, #SUM(orders.o_totalprice) AS __value, alias=__sq_2 Aggregate: groupBy=[[#orders.o_custkey]], aggr=[[SUM(#orders.o_totalprice)]] Filter: CAST(#orders.o_totalprice AS Decimal128(25, 2)) < #__sq_1.__value Inner Join: #orders.o_orderkey = #__sq_1.l_orderkey TableScan: orders projection=[o_orderkey, o_custkey, o_totalprice] Projection: #lineitem.l_orderkey, #SUM(lineitem.l_extendedprice) AS price AS __value, alias=__sq_1 Aggregate: groupBy=[[#lineitem.l_orderkey]], aggr=[[SUM(#lineitem.l_extendedprice)]] TableScan: lineitem projection=[l_orderkey, l_extendedprice] ``` to ``` Sort: #customer.c_custkey ASC NULLS LAST Projection: #customer.c_custkey Filter: CAST(#customer.c_acctbal AS Decimal128(25, 2)) < #__sq_2.__value Inner Join: #customer.c_custkey = #__sq_2.o_custkey TableScan: customer projection=[c_custkey, c_acctbal] Projection: #orders.o_custkey, #SUM(orders.o_totalprice) AS __value, alias=__sq_2 Aggregate: groupBy=[[#orders.o_custkey]], aggr=[[SUM(#orders.o_totalprice)]] Filter: #orders.o_totalprice < #__sq_1.__value Inner Join: #orders.o_orderkey = #__sq_1.l_orderkey TableScan: orders projection=[o_orderkey, o_custkey, o_totalprice] Projection: #lineitem.l_orderkey, #SUM(lineitem.l_extendedprice) AS price AS __value, alias=__sq_1 Aggregate: groupBy=[[#lineitem.l_orderkey]], aggr=[[SUM(#lineitem.l_extendedprice)]] TableScan: lineitem projection=[l_orderkey, l_extendedprice] ``` Can't get the type coercion result of `Filter: #orders.o_totalprice < #__sq_1.__value` **Describe the solution you'd like** A clear and concise description of what you want to happen. **Describe alternatives you've considered** A clear and concise description of any alternative solutions or features you've considered. **Additional context** Add any other context or screenshots about the feature request here. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
