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https://issues.apache.org/jira/browse/PHOENIX-927?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13967286#comment-13967286
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ASF GitHub Bot commented on PHOENIX-927:
----------------------------------------
Github user JamesRTaylor commented on a diff in the pull request:
https://github.com/apache/incubator-phoenix/pull/28#discussion_r11556879
--- Diff:
phoenix-core/src/main/java/org/apache/phoenix/join/HashJoinInfo.java ---
@@ -113,6 +115,10 @@ public Expression getPostJoinFilterExpression() {
return postJoinFilterExpression;
}
+ public boolean forceProjection() {
+ return forceProjection;
--- End diff --
When is forceProjection required and why? It'd be good to document that.
> Support derived tables in joins
> -------------------------------
>
> Key: PHOENIX-927
> URL: https://issues.apache.org/jira/browse/PHOENIX-927
> Project: Phoenix
> Issue Type: Sub-task
> Reporter: Maryann Xue
> Assignee: Maryann Xue
> Labels: enhancement
> Fix For: 3.0.0, 4.0.0, 5.0.0
>
> Original Estimate: 240h
> Remaining Estimate: 240h
>
> Support grammar like:
> SELECT a.col1, b.col2, c.col3 FROM
> (SELECT rk, col1 FROM table1 WHERE col1 LIKE 'foo%' AND col300 IS NULL) AS a
> JOIN (SELECT rk, col2 FROM table2 WHERE col2 LIKE 'bar%') AS b ON a.rk=b.rk
> JOIN (SELECT rk, col3 FROM table3 ) AS c ON a.rk=c.rk;
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