[
https://issues.apache.org/jira/browse/DRILL-884?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Xiao Meng updated DRILL-884:
----------------------------
Labels: Tableau (was: )
> 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
> Labels: Tableau
> 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}
> *Updated to avoid confusion:*
> The above query is not the problem for the json file. It is because the query
> fails for the json file.
> {code}
> SELECT `TableauSQL`.`address` AS `address`,
> `TableauSQL`.`br` AS `br`,
> `TableauSQL`.`first_visit` AS `first_visit`,
> `TableauSQL`.`gender` AS `gender`,
> `TableauSQL`.`id` AS `id`,
> `TableauSQL`.`la` AS `la`,
> `TableauSQL`.`name` AS `name`,
> `TableauSQL`.`os` AS `os`,
> `TableauSQL`.`st` AS `st`,
> `TableauSQL`.`user_category` AS `user_category`
> FROM (
> select * from dfs.`default`.`/opt/drill/raw-files/click1.json`
> ) `TableauSQL`
> {code}
> However, there is a problem of Tableau generated metadata query in
> mult-region HBase table (DRILL-1026).
--
This message was sent by Atlassian JIRA
(v6.2#6252)
