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From ankitsinghal <...@git.apache.org>
Subject [GitHub] phoenix pull request: PHOENIX-2722 support mysql limit,offset clau...
Date Tue, 05 Apr 2016 08:48:32 GMT
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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