- All Superinterfaces:
- IQTreeTransformer
- All Known Implementing Classes:
- BooleanExpressionPushDownTransformerImpl
public interface BooleanExpressionPushDownTransformer
extends IQTreeTransformer
Pushes down the expression as much as possible without creating new sub-queries
(e.g. without creating a FILTER on the left of a LJ).
In particular, it pushes down expressions in existing sub-queries (for instance inside children of a UNION)