Github user Crystark commented on the pull request:
https://github.com/apache/storm/pull/374#issuecomment-74867621
This would indeed be nice but after trying it out it seems that if a batch
has more than one tuple to insert, then only the last tuple is inserted.
In
[JdbcClient#insert](https://github.com/Parth-Brahmbhatt/incubator-storm/blob/STORM-616/external/storm-jdbc/src/main/java/org/apache/storm/jdbc/common/JdbcClient.java#L48)
we can see that there's only one set of `VALUES` (line 61-64) but then it
loops on all the columns and each one overrides the previous values that were
set as SQL parameters leading to only the last one beeing used.
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