morrySnow commented on code in PR #13601:
URL: https://github.com/apache/doris/pull/13601#discussion_r1044121987
##########
fe/fe-core/src/main/java/org/apache/doris/nereids/rules/rewrite/logical/ReorderJoin.java:
##########
@@ -90,6 +91,11 @@ public Plan joinToMultiJoin(Plan plan) {
return plan;
}
+ // Can't reorder the join inputs if this join has hints.
+ if (plan instanceof LogicalJoin && ((LogicalJoin) plan).hasJoinHint())
{
+ return plan;
+ }
+
Review Comment:
could we still eliminate all cross join if we add this?
##########
fe/fe-core/src/test/java/org/apache/doris/nereids/util/ExceptionChecker.java:
##########
@@ -37,6 +37,7 @@ public ExceptionChecker assertMessageEquals(String message) {
}
public ExceptionChecker assertMessageContains(String context) {
+ System.out.println(exception.getMessage());
Assertions.assertTrue(exception.getMessage().contains(context));
Review Comment:
Assertions.assertTrue(exception.getMessage().contains(context),
exception.getMessage());
##########
fe/fe-core/src/main/antlr4/org/apache/doris/nereids/DorisParser.g4:
##########
@@ -122,7 +122,13 @@ relation
;
joinRelation
- : (joinType) JOIN right=relationPrimary joinCriteria?
+ : (joinType) JOIN joinHint? right=relationPrimary joinCriteria?
+ ;
Review Comment:
```suggestion
: (joinType) JOIN joinHint? right=relationPrimary joinCriteria?
;
```
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