zhuqi-lucas commented on code in PR #14499:
URL: https://github.com/apache/datafusion/pull/14499#discussion_r1942551654
##########
datafusion/sqllogictest/test_files/aggregate.slt:
##########
@@ -5032,18 +5032,17 @@ logical_plan
03)----Aggregate: groupBy=[[aggregate_test_100.c3]],
aggr=[[min(aggregate_test_100.c1)]]
04)------TableScan: aggregate_test_100 projection=[c1, c3]
physical_plan
-01)GlobalLimitExec: skip=0, fetch=5
Review Comment:
We default to use skip=0 for the SortPreservingMergeExec:
```rust
1 => match self.fetch {
Some(fetch) => {
let stream = self.input.execute(0, context)?;
debug!("Done getting stream for
SortPreservingMergeExec::execute with 1 input with {fetch}");
Ok(Box::pin(LimitStream::new(
stream,
0,
Some(fetch),
BaselineMetrics::new(&self.metrics, partition),
)))
}
```
```rust
impl LimitStream {
pub fn new(
input: SendableRecordBatchStream,
skip: usize,
fetch: Option<usize>,
baseline_metrics: BaselineMetrics,
) -> Self {
let schema = input.schema();
Self {
skip,
fetch: fetch.unwrap_or(usize::MAX),
input: Some(input),
schema,
baseline_metrics,
}
}
```
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