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https://issues.apache.org/jira/browse/DRILL-884?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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George Chow updated DRILL-884:
------------------------------
Priority: Critical (was: Major)
Discussed with Leslie, Neeraja and Parth and confirmed this as critical.
> Query used to derive result set metadata for Tableau's "Custom SQL" does not
> run
> --------------------------------------------------------------------------------
>
> Key: DRILL-884
> URL: https://issues.apache.org/jira/browse/DRILL-884
> Project: Apache Drill
> Issue Type: Bug
> Components: Execution - Flow
> Reporter: George Chow
> Assignee: Steven Phillips
> Priority: Critical
> Fix For: 1.0.0-BETA1
>
>
> The following style of query is used by Tableau to derive the metadata of a
> custom SQL:
> From Tableau's protocol server log:
> {code}
> 2014-05-30 18:35:39.718 (-,-,-,-) 0ea0: ODBCProtocol::ReadMetadataImpl:
> Attempting to read metadata from the prepared / executed query result set.
> 2014-05-30 18:35:39.718 (-,-,-,-) 0ea0: ODBCProtocolImpl::ReadMetadataImpl:
> Reading metadata using a prepared statement.
> 2014-05-30 18:35:39.718 (-,-,-,-) 0ea0: <QUERY protocol='0367b1f0'>
> 2014-05-30 18:35:39.718 (-,-,-,-) 0ea0: SELECT *
> 2014-05-30 18:35:39.718 (-,-,-,-) 0ea0: FROM (
> 2014-05-30 18:35:39.718 (-,-,-,-) 0ea0: select * from
> dfs.`default`.`/opt/drill/raw-files/click1.json`
> 2014-05-30 18:35:39.718 (-,-,-,-) 0ea0: ) `TableauSQL`
> 2014-05-30 18:35:39.718 (-,-,-,-) 0ea0: WHERE (0 = 1)
> 2014-05-30 18:35:39.718 (-,-,-,-) 0ea0: </QUERY>
> 2014-05-30 18:35:39.718 (-,-,-,-) 0ea0: ODBCProtocolImpl::ReadMetadataImpl:
> SQLPrepare failed. Reading metadata using an executed query.
> 2014-05-30 18:35:47.640 (-,-,-,-) 0ea0: ODBCProtocolImpl::ReadMetadataImpl:
> No columns were reported!
> {code}
> Extracting the query to run inside sqlline shows the problem:
> {code}
> 0: jdbc:drill:zk=localhost:5181> select * from (select * from
> dfs.`default`.`/opt/drill/raw-files/click1.json`) `TableauSQL` where (0=1);
> +--+
> | |
> +--+
> +--+
> No rows selected (9.059 seconds)
> {code}
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