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Hook for plugins to get control when grouping_planner() plans upper rels

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Interface type

create_upper_paths_hook_type

Header

src/include/optimizer/planner.h

Subsystem

Query planning

Initial value

NULL (no hook installed)

signature

typedef void (*create_upper_paths_hook_type) (PlannerInfo *root, UpperRelationKind stage, RelOptInfo *input_rel, RelOptInfo *output_rel, void *extra); extern PGDLLIMPORT create_upper_paths_hook_type create_upper_paths_hook;