Lukas Eder

See this discussion here: https://twitter.com/tagir_valeev/status/684710644998782976 An untyped `Tuple` should be collected, which exposes its internal `Object[]`

When a window function spans `RANGE BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW`, then some optimisations can be performed in case the window function is a associative function, such as `SUM()`,...

As correctly stated by Tagir Valeev, the current implementation of `Seq.duplicate()` isn't thread safe: http://stackoverflow.com/questions/23860533/copy-a-stream-to-avoid-stream-has-already-been-operated-upon-or-closed-java-8/25961951?noredirect=1#comment53095315_25961951 This is relevant when the stream duplicates are consumed on different threads, which is (ignoring...

Add a way to specify general grouping sets and special ones like rollup and cube

2

It would be nice to implement accumulators / collectors that implement SQL's `GROUPING SET` semantics by duplicating data into possible grouping set permutations. Possibly, this is only feasible via #105

Add Seq.peekThrowable(Consumer<Throwable>)

4

There is currently no fluent way of handling exceptions in a `Stream`. While `Stream` extends `AutoCloseable` and provides an `onClose(Runnable)` hook for actions that are to be taken before the...

As can be seen in this question (http://stackoverflow.com/a/28083591/521799), people will want to implement SQL via Streams and lambdas, but they will terribly fail as: - IDEs are not at all...