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_r360874450
##########
File path:
core/src/main/java/org/apache/calcite/rel/rel2sql/RelToSqlConverter.java
##########
@@ -634,6 +634,13 @@ public Result visit(Sort e) {
}
Result x = visitChild(0, e.getInput());
Builder builder = x.builder(e, Clause.ORDER_BY);
+ if (builder.select.getSelectList() == null) {
Review comment:
Thanks for explanation ~
Since it's very common to execute sql like `select * from XXX order by col`,
shall we wrap the change within a check like below:
```
if (stack.getLast().r != e) {
...
}
```
Thus we can save the change in`RelToSqlConverterTest.java` and keep the
converted Sql String simplier.
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