Module subquery 

Generic subquery execution primitives.

These helpers intentionally model the current naive execution shape: callers provide the concrete subplan executor and this module supplies only the reusable control-flow skeletons.

Structs

MaterializeCache

HashMap-backed materialization cache for subquery results.

Functions

materialize_cache

Create an empty materialization cache.

nested_scan

Execute a nested subplan scan.

semi_join_probe

Scan candidates until a match is found.