[Enchancement](sort) do a little optimization for full sort (#56944)

qzsee · garenshi · hello-stephen · web-flow · commit 2cfcc0ff6d2a · 2026-01-06T00:28:50.000+08:00
Co-authored-by: garenshi &lt;garenshi@tencnet.com&gt;
Co-authored-by: Dongyang Li &lt;lidongyang@selectdb.com&gt;
Co-authored-by: garenshi &lt;garenshi@tencent.com&gt;
diff --git a/be/src/vec/common/sort/partition_sorter.cpp b/be/src/vec/common/sort/partition_sorter.cpp
@@ -191,8 +191,7 @@ Status PartitionSorter::_read_row_rank(Block* output_block, bool* eos, int batch
                 _output_distinct_rows++;
             }
             for (size_t i = 0; i < num_columns; ++i) {
-                merged_columns[i]->insert_from(*current->impl->block->get_columns()[i],
-                                               current->impl->pos);
+                merged_columns[i]->insert_from(*current->impl->columns[i], current->impl->pos);
             }
             merged_rows++;
             _output_total_rows++;

Original file line number	Diff line number	Diff line change
`@@ -191,8 +191,7 @@ Status PartitionSorter::_read_row_rank(Block* output_block, bool* eos, int batch`
`191`	`191`	`_output_distinct_rows++;`
`192`	`192`	`}`
`193`	`193`	`for (size_t i = 0; i < num_columns; ++i) {`
`194`		`- merged_columns[i]->insert_from(*current->impl->block->get_columns()[i],`
`195`		`- current->impl->pos);`
	`194`	`+ merged_columns[i]->insert_from(*current->impl->columns[i], current->impl->pos);`
`196`	`195`	`}`
`197`	`196`	`merged_rows++;`
`198`	`197`	`_output_total_rows++;`