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https://issues.apache.org/jira/browse/JENA-783?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14126910#comment-14126910
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Andy Seaborne commented on JENA-783:
------------------------------------

The difference is {{(extend)}} of one assignment over {{(expend)}} of another 
assignment to {{(extend)}} two assignments.

> qparse detects inconsistency on multiple BIND separated by {}
> -------------------------------------------------------------
>
>                 Key: JENA-783
>                 URL: https://issues.apache.org/jira/browse/JENA-783
>             Project: Apache Jena
>          Issue Type: Improvement
>            Reporter: Andy Seaborne
>            Assignee: Andy Seaborne
>            Priority: Minor
>
> {noformat}
> SELECT * {
>    BIND(1 AS ?s)
>    {}
>    BIND(2 AS ?w)
> }
> {noformat}
> {noformat}
>  qparse --print=op
> {noformat}
> gives 
> {noformat}
> **** Check failure: reparsed algebra expression does not equal query algebra
> {noformat}
> because the empty graph pattern has been simplified away.
> The algebra reparsed is correct.



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