drill-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From zfong <...@git.apache.org>
Subject [GitHub] drill pull request #748: DRILL-5263: Prevent left NLJoin with non scalar sub...
Date Tue, 14 Feb 2017 16:08:49 GMT
Github user zfong commented on a diff in the pull request:

    --- Diff: exec/java-exec/src/main/java/org/apache/drill/exec/planner/physical/NestedLoopJoinPrule.java
    @@ -49,7 +49,7 @@ protected boolean checkPreconditions(DrillJoinRel join, RelNode left,
RelNode ri
           PlannerSettings settings) {
         JoinRelType type = join.getJoinType();
    -    if (! (type == JoinRelType.INNER || type == JoinRelType.LEFT)) {
    +    if (!(type == JoinRelType.INNER || (type == JoinRelType.LEFT && JoinUtils.hasScalarSubqueryInput(left,
right)))) {
    --- End diff --
    Don't we want to disallow left outer joins in all cases, even if one of the join inputs
is a scalar?

If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at infrastructure@apache.org or file a JIRA ticket
with INFRA.

View raw message