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https://issues.apache.org/jira/browse/NIFI-5471?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Pierre Villard updated NIFI-5471:
---------------------------------
Resolution: Fixed
Fix Version/s: 1.8.0
Status: Resolved (was: Patch Available)
> QueryDatabaseTable does not correctly support arbitrary queries on Oracle
> -------------------------------------------------------------------------
>
> Key: NIFI-5471
> URL: https://issues.apache.org/jira/browse/NIFI-5471
> Project: Apache NiFi
> Issue Type: Bug
> Components: Extensions
> Reporter: Matt Burgess
> Assignee: Matt Burgess
> Priority: Major
> Fix For: 1.8.0
>
>
> NIFI-1706 added the capability to generate the "table" it uses for
> incremental fetch from a SQL statement, rather than generating it directly
> from "Columns to Return", "Max Value Columns", etc. When a SQL query is
> supplied, it is wrapped as a nested query in a SELECT, and the result is
> aliased to the provided "Table Name" property value.
> Currently this is done by simply generating a string "SELECT (" + query + ")
> AS " + tableName. However some databases (such as Oracle) do not allow the
> "AS" keywords for aliasing things like tables. The getWrappedQuery() method
> should delegate to the specified database adapter for generating a table
> alias clause. Many adapters will return "AS " + tableName, where the Oracle
> adapter(s) will simply return the table name.
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