Github user twalthr commented on the pull request:
https://github.com/apache/flink/pull/1881#issuecomment-210355092
> It's better to have a temporary solution than no solution ;-)
Calcite translates all decimal literals to `DECIMAL`. At the moment even
`SELECT 11.2 FROM MyTable` does not work, although it could fit into `DOUBLE`.
I thought it makes sense to support at least decimals of `DOUBLE` precision.
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