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https://issues.apache.org/jira/browse/ARROW-17199?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17571026#comment-17571026
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David Li commented on ARROW-17199:
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CC [~jduong]: is the behavior for CommandPreparedStatementQuery here expected?
Right now, in DoPut, the Java/C++ servers bind each row successively, but don't
actually execute anything. So when you go to actually execute the query later,
you get only one result row (corresponding to the last parameter row).
> [FlightRPC][C++][Java] Fix example Flight SQL servers
> -----------------------------------------------------
>
> Key: ARROW-17199
> URL: https://issues.apache.org/jira/browse/ARROW-17199
> Project: Apache Arrow
> Issue Type: Bug
> Components: C++, FlightRPC, Java
> Reporter: David Li
> Assignee: David Li
> Priority: Major
>
> There are a number of small bugs in the Java Flight SQL example (e.g. binding
> parameters to the wrong index, not handling null parameter values, not
> properly reporting errors) that should be fixed.
> Also, CommandPreparedStatementQuery is implemented wrong in both C++ and Java
> servers: only the last parameter value will be bound/executed when executing
> a prepared statement that returns a result set. But this contradicts the
> spec, which states "All of the bound parameter sets will be executed as a
> single atomic execution". The server(s) need to cache the uploaded Arrow data
> and execute using all input rows.
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