3 Commits

Author	SHA1	Message	Date
Matvey Arye	0f3e74215a	Split segment meta min_max into two columns ... This simplifies the code and the access to the min/max metadata. Before we used a custom type, but now the min/max are just the same type as the underlying column and stored as two columns. This also removes the custom type that was used before.	2019-10-29 19:02:58 -04:00
Matvey Arye	2bf97e452d	Push down quals to segment meta columns ... This commit pushes down quals or order_by columns to make use of the SegmentMetaMinMax objects. Namely =,<,<=,>,>= quals can now be pushed down. We also remove filters from decompress node for quals that have been pushed down and don't need a recheck. This commit also changes tests to add more segment by and order-by columns. Finally, we rename segment meta accessor functions to be smaller	2019-10-29 19:02:58 -04:00
Matvey Arye	be199bec70	Add type cache ... Add a type cache to get the OID corresponding to a particular defined SQL type.	2019-10-29 19:02:58 -04:00