Module planner 

Query planner: chooses between seq scan, PK lookup, or index scan.

Enums

ScanPlan

Functions

describe_plan

plan_select

plan_select_with_gin

Same as plan_select but allows returning ScanPlan::GinScan when an inverted index covers the predicate. The caller MUST handle the GinScan variant; non-supporting paths should use plan_select instead.