zhuqi-lucas opened a new pull request, #15730:
URL: https://github.com/apache/datafusion/pull/15730
## Which issue does this PR close?
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This PR removed the unused logic, why it's unused?
Because now we have
## Rationale for this change
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Why are you proposing this change? If this is already explained clearly in
the issue then this section is not needed.
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Because now we have unified DataSourceExec and with fetch support, so the
limit pushdown can be pushed to DataSourceExec, the corner case will not happen
for this logic.
For example:
```rust
query TT
explain select * from testSubQueryLimit as t1 join (select * from
testSubQueryLimit limit 10) limit 2;
----
logical_plan
01)Limit: skip=0, fetch=2
02)--Cross Join:
03)----SubqueryAlias: t1
04)------Limit: skip=0, fetch=2
05)--------TableScan: testsubquerylimit projection=[a, b], fetch=2
06)----Limit: skip=0, fetch=2
07)------TableScan: testsubquerylimit projection=[a, b], fetch=2
physical_plan
01)GlobalLimitExec: skip=0, fetch=2
02)--CrossJoinExec
03)----DataSourceExec: partitions=1, partition_sizes=[1], fetch=2
04)----DataSourceExec: partitions=1, partition_sizes=[1], fetch=2
```
## What changes are included in this PR?
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There is no need to duplicate the description in the issue here but it is
sometimes worth providing a summary of the individual changes in this PR.
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## Are these changes tested?
Yes, the test existed in limit.
## Are there any user-facing changes?
No
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