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https://issues.apache.org/jira/browse/PHOENIX-6409?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17299302#comment-17299302
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Lars Hofhansl commented on PHOENIX-6409:
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Something like "SERVER INDEX MERGE". So a plan would look like this:
{code:java}
CLIENT PARALLEL 1-WAY RANGE SCAN OVER table [1]
SERVER FILTER BY FIRST KEY ONLY
SERVER INDEX MERGE
CLIENT MERGE SORT{code}
Could also be "SERVER TABLE MERGE" or "SERVER UNCOVERED MERGE".
> Include local index uncovered columns merge in explain plan.
> ------------------------------------------------------------
>
> Key: PHOENIX-6409
> URL: https://issues.apache.org/jira/browse/PHOENIX-6409
> Project: Phoenix
> Issue Type: Improvement
> Affects Versions: 5.2.0
> Reporter: Lars Hofhansl
> Priority: Minor
>
> This is a nice to have.
> It would be nice if EXPLAIN would show that uncovered columns have to be
> merged during the index scan.
> (Not sure that is easily doable - filing it here for the record.)
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