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https://issues.apache.org/jira/browse/SOLR-9916?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15803133#comment-15803133
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Joel Bernstein commented on SOLR-9916:
--------------------------------------
Looks really good to me.
I'm just about to commit a small change so that LeafOperations can accept a
metric identifier without single quotes. Currently you have to do the following
or the parser will parse the metric and not know how to use it as a value
operand.
{code}
having(expr, eq('sum(a_i)', 9))
{code}
After this small commit it will support:
{code}
having(expr, eq(sum(a_i), 9))
{code}
This will just be relevant for Solr 6.4 which is coming in a few days.
The work you're doing on this ticket will supersede this change but it's nice
to have for 6.4.
> Add arithmetic operations to the SelectStream
> ---------------------------------------------
>
> Key: SOLR-9916
> URL: https://issues.apache.org/jira/browse/SOLR-9916
> Project: Solr
> Issue Type: New Feature
> Security Level: Public(Default Security Level. Issues are Public)
> Reporter: Joel Bernstein
>
> One of the things that will be needed as the SQL implementation matures is
> the ability to do arithmetic operations. For example:
> select (a+b) from x;
> select sum(a)+sum(b) from x;
> We will need to support arithmetic operations within the Streaming API to
> support these types of operations.
> It looks like adding arithmetic operations to the SelectStream is the best
> place to add this functionality.
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