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e2b64fcef3
Extend the infrastructure in btree_gin.c to permit cross-type operators, and add the code to support them for the int2, int4, and int8 opclasses. (To keep this patch digestible, I left the other datatypes for a separate patch.) This improves the usability of btree_gin indexes by allowing them to support the same set of queries that a regular btree index does. Author: Tom Lane <tgl@sss.pgh.pa.us> Reviewed-by: Arseniy Mukhin <arseniy.mukhin.dev@gmail.com> Discussion: https://postgr.es/m/262624.1738460652@sss.pgh.pa.us