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https://issues.apache.org/jira/browse/NIFI-853?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14698260#comment-14698260
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Mark Payne commented on NIFI-853:
---------------------------------
Toivo,
I think each row should be able to have different columns. An UPDATE, for
instance, may have very different columns. Or an INSERT could, as well, if our
database has, say 30 columns and we are only populating 10 of them (and leaving
the rest NULL or default values).
We could also have many FlowFiles come in, each inserting into a different
table potentially.
Thanks
-Mark
> Create Processors to put JSON data to a Relational Database
> -----------------------------------------------------------
>
> Key: NIFI-853
> URL: https://issues.apache.org/jira/browse/NIFI-853
> Project: Apache NiFi
> Issue Type: Task
> Components: Extensions
> Reporter: Mark Payne
> Assignee: Mark Payne
> Fix For: 0.3.0
>
> Attachments:
> 0001-NIFI-853-Added-processors-ConvertFlatJSONToSQL-PutSQ.patch,
> 0002-NIFI-853-Made-updates-to-processors.patch
>
>
> Most of the discussion/design for these processors happened in the comments
> of NIFI-293, which was the initial ticket for implementing JDBC functionality
> in NiFi, but was closed in a previous version, so this ticket was created to
> do the work.
> The idea is to have a processor that will take in FlowFiles whose contents
> are arbitrary SQL INSERT/UPDATE commands. The commands can be parameterized
> with the parameters' values and types in FlowFile attributes.
> We then should have a processor that converts a JSON document into a SQL
> command to either update or insert data into a database table. We will also
> want some other processors in the future probably to handle other data types,
> such as converting XML, CSV, Avro, etc. into SQL commands.
> This breakout gives us a nice coherence to the "do only one thing and do it
> well" principle by separating the logic of handling all of the incoming
> formats from the logic of updating the database.
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