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https://issues.apache.org/jira/browse/BEAM-2376?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16068344#comment-16068344
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Rik Nauta commented on BEAM-2376:
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Any thoughts?
> JdbcIO should allow multiple statements
> ---------------------------------------
>
> Key: BEAM-2376
> URL: https://issues.apache.org/jira/browse/BEAM-2376
> Project: Beam
> Issue Type: Improvement
> Components: sdk-java-extensions
> Affects Versions: Not applicable
> Reporter: Rik Nauta
> Assignee: Jean-Baptiste Onofré
> Fix For: Not applicable
>
> Original Estimate: 1h
> Remaining Estimate: 1h
>
> Right now the JdbcIO pipeline adds a single Write statement to the batch per
> PCollection element. This makes it difficult to execute several statements
> that require a specific order (for instance due to constraints in the DB),
> since JDBC doesn't allow multiple statements in a single "addBatch".
> For instance, I can't execute {{INSERT INTO users (id) VALUES (test); INSERT
> INTO profiles (user_id, name) VALUES (test, 'John');}}
> There's several ways we could solve this, one would be not to return a PDone
> but just pass through the data so that you can at least chain several Writes.
> Alternatively we could take the Statement string, split on the ";" character
> if there is one and apply each statement to the either an array of argument
> setters or the same setter with an additional {{statement_#}} parameter. And
> then we simply don't commit a batch between these statements.
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