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https://issues.apache.org/jira/browse/DRILL-6834?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16715991#comment-16715991
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Bridget Bevens commented on DRILL-6834:
---------------------------------------
Hi [~KazydubB],
I’m planning to add a note to the following pages about the behavior and new
option:
* [https://drill.apache.org/docs/interfaces-introduction/]
* [https://drill.apache.org/docs/create-table-as-ctas/]
* [https://drill.apache.org/docs/create-view/]
* [https://drill.apache.org/docs/create-function-using-jar/]
* [https://drill.apache.org/docs/drop-function-using-jar/]
* [https://drill.apache.org/docs/drop-table/]
* [https://drill.apache.org/docs/drop-view/]
* [https://drill.apache.org/docs/use/]
* [https://drill.apache.org/docs/set/]
I’m planning to add the following note:
*********************
*NOTE:*
_By default, Drill returns a result set when you issue DDL statements, such as
CTAS and CREATE VIEW. If the client tool from which you connect to Drill (via
JDBC) does not expect a result set when you issue DDL statements, set the
exec.return_result_set_for_ddl option to false, as shown, to prevent the client
from canceling queries:_
_SET `exec.return_result_set_for_ddl` = false_
_When set to false, Drill returns the affected rows count, and the result set
is null._
_***********************_
Please let me know if this is okay, or if I need to make any changes.
Thanks,
Bridget
**
> Introduce option to disable result set for DDL queries for JDBC connection
> --------------------------------------------------------------------------
>
> Key: DRILL-6834
> URL: https://issues.apache.org/jira/browse/DRILL-6834
> Project: Apache Drill
> Issue Type: Improvement
> Reporter: Bohdan Kazydub
> Assignee: Bohdan Kazydub
> Priority: Major
> Labels: doc-impacting, ready-to-commit
> Fix For: 1.15.0
>
>
> There are some tools (Unica, dBeaver, TalenD) that do not expect to obtain
> result set on CTAS query. As a result the query gets canceled. Hive, on the
> other hand, does not return result set for the query and these tools work
> well.
> To improve Drill's integration with such tools a session option
> {{`exec.return_result_set_for_ddl}}{{`}} is introduced. If the option is
> enabled (set to `true`) Drill's behaviour will be unchanged, i.e. a result
> set will be returned for all queries. If the option is disabled (set to
> `false`), CTAS, CREATE VIEW, CREATE FUNCTION, DROP TABLE, DROP VIEW, DROP
> FUNCTION, USE schema, SET option, REFRESH METADATA TABLE queries will not
> return result set but {{updateCount}} instead.
> The option affects JDBC connections only.
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