jinxing64 commented on a change in pull request #1680: [CALCITE-3621] Push down
sort to DB, SQL of Sort rel contains explicit field name instead of *
URL: https://github.com/apache/calcite/pull/1680#discussion_r360714260
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File path: core/src/main/java/org/apache/calcite/adapter/jdbc/JdbcRules.java
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@@ -765,10 +766,11 @@ public RelNode convert(RelNode rel) {
*/
public RelNode convert(Sort sort, boolean convertInputTraits) {
final RelTraitSet traitSet = sort.getTraitSet().replace(out);
+ RelTraitSet inputTraitSet = traitSet.replace(RelCollations.EMPTY);
Review comment:
Why it's not as below
```
final RelTraitSet inputTraitSet = sort.getInput().getTraitSet().replace(out);
```
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