Github user ankitsinghal commented on a diff in the pull request:
https://github.com/apache/phoenix/pull/154#discussion_r58504649
--- Diff:
phoenix-core/src/main/java/org/apache/phoenix/compile/QueryCompiler.java ---
@@ -168,7 +169,11 @@ public QueryPlan compileUnionAll(SelectStatement
select) throws SQLException {
SelectStatement subSelect = unionAllSelects.get(i);
// Push down order-by and limit into sub-selects.
if (!select.getOrderBy().isEmpty() || select.getLimit() !=
null) {
- subSelect = NODE_FACTORY.select(subSelect,
select.getOrderBy(), select.getLimit());
+ if (select.getOffset() == null) {
+ subSelect = NODE_FACTORY.select(subSelect,
select.getOrderBy(), select.getLimit(), null);
+ } else {
+ subSelect = NODE_FACTORY.select(subSelect,
select.getOrderBy(), null, null);
+ }
--- End diff --
Actually , In case of union , we need to apply offset at the final result
so we can't apply limit or offset in subselect.
but, if offset is not present , limit can be applied
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