Github user gparai commented on a diff in the pull request:
https://github.com/apache/drill/pull/1096#discussion_r171708410
--- Diff:
exec/java-exec/src/main/java/org/apache/drill/exec/planner/common/DrillRelOptUtil.java
---
@@ -224,4 +226,64 @@ public Void visitInputRef(RexInputRef inputRef) {
}
}
+ public static boolean isLimit0(RexNode fetch) {
+ if (fetch != null && fetch.isA(SqlKind.LITERAL)) {
+ RexLiteral l = (RexLiteral) fetch;
+ switch (l.getTypeName()) {
+ case BIGINT:
+ case INTEGER:
+ case DECIMAL:
+ if (((long) l.getValue2()) == 0) {
+ return true;
+ }
+ }
+ }
+ return false;
+ }
+
+ public static boolean isProjectOutputRowcountUnknown(RelNode project) {
--- End diff --
Done
---
