chunweilei commented on a change in pull request #1158: [CALCITE-2992] Make
implicit conversions when generating hash join keys for an equiCondition
URL: https://github.com/apache/calcite/pull/1158#discussion_r275099898
##########
File path:
core/src/main/java/org/apache/calcite/adapter/enumerable/PhysTypeImpl.java
##########
@@ -582,7 +590,8 @@ public Expression generateAccessor(
// }
Expressions.FluentList<Expression> list = Expressions.list();
for (int field : fields) {
- list.add(fieldReference(v1, field));
+ list.add(
+ Expressions.call(CONVERT2STRING_METHOD, fieldReference(v1,
field)));
}
Review comment:
Need test case at least. Besides, I really don't think it's a good idea to
convert join keys to strings considering its costs.
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