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https://issues.apache.org/jira/browse/CALCITE-4630?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17360068#comment-17360068
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Dmitry Sysolyatin commented on CALCITE-4630:
--------------------------------------------
Looks like I was wrong and the bug is in my calcite-adapter. Actually passing
filter through join is correct behavior even subquery has a limit. The main
thing is not passing Filter through Sort.
The problem is that my calcite-adapter transforms a logical plan:
{code:java}
LogicalProject(name=[$8], timestamp_ns=[$9])
LogicalCorrelate(correlation=[$cor0], joinType=[inner], requiredColumns=[{4}])
LogicalFilter(condition=[=(CAST($6):VARCHAR, 'South')])
DataTableScan
LogicalFilter(condition=[<($2, 0.1:DECIMAL(2, 1))])
LogicalSort(sort0=[$1], dir0=[DESC], fetch=[1])
LogicalProject(name=[$4], timestamp_ns=[$0], fuel_state=[$1])
LogicalFilter(condition=[=(CAST($4):VARCHAR,
CAST($cor0.name):VARCHAR)])
DataTableScan
{code}
to
{code:java}
EnumerableCalc
EnumerableCorrelate(correlation=[$cor0], joinType=[inner],
requiredColumns=[{4}])
DBQuery(filter=[fleet='South'], table='trucks')
DBQuery(filter=[fuel_state < 0.1], corrFilter=[name=$cor0.name], limit=1,
sort='timestamp_ns DESC', table='trucks_diagnostics')
{code}
instead of:
{code:java}
EnumerableCalc
EnumerableCorrelate(correlation=[$cor0], joinType=[inner],
requiredColumns=[{4}])
DBQuery(filter=[fleet='South'], table='trucks')
EnumerableCalc
DBQuery(corrFilter=[name=$cor0.name], limit=1, sort='timestamp_ns DESC',
table='trucks_diagnostics')
{code}
I will close the issue
> Wrong logical plan for INNER JOIN with subquery
> -----------------------------------------------
>
> Key: CALCITE-4630
> URL: https://issues.apache.org/jira/browse/CALCITE-4630
> Project: Calcite
> Issue Type: Bug
> Components: core
> Affects Versions: 1.27.0
> Reporter: Dmitry Sysolyatin
> Assignee: Dmitry Sysolyatin
> Priority: Critical
> Labels: pull-request-available
> Fix For: 1.28.0
>
> Time Spent: 40m
> Remaining Estimate: 0h
>
> I tried to execute the following query:
> {code:sql}
> SELECT
> d.name,
> d.timestamp_ns
> FROM trucks t
> INNER JOIN LATERAL (
> SELECT
> name, timestamp_ns, fuel_state
> FROM
> trucks_diagnostics
> WHERE
> trucks_diagnostics.name = t.name
> ORDER BY timestamp_ns DESC
> LIMIT 1) d ON true WHERE t.fleet = 'South' AND d.fuel_state < 0.1
> {code}
> calcite generates me the following logical plan:
> {code:java}
> LogicalProject(name=[$8], timestamp_ns=[$9])
> LogicalCorrelate(correlation=[$cor0], joinType=[inner],
> requiredColumns=[{4}])
> LogicalFilter(condition=[=(CAST($6):VARCHAR, 'South')])
> DataTableScan
> LogicalFilter(condition=[<($2, 0.1:DECIMAL(2, 1))])
> LogicalSort(sort0=[$1], dir0=[DESC], fetch=[1])
> LogicalProject(name=[$4], timestamp_ns=[$0], fuel_state=[$1])
> LogicalFilter(condition=[=(CAST($4):VARCHAR,
> CAST($cor0.name):VARCHAR)])
> DataTableScan
> {code}
> But `LogicalFilter(condition=[<($2, 0.1:DECIMAL(2, 1))])` should not be
> inside LogicalCorrelate . It should be upper than LogicalCorrelate
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