From 696d78469f3714a8159f7a145af1fe9179fe3291 Mon Sep 17 00:00:00 2001
From: Andres Freund
Date: Sat, 30 Mar 2019 16:40:33 -0700
Subject: tableam: Move heap specific logic from estimate_rel_size below
 tableam.

This just moves the table/matview[/toast] determination of relation
size to a callback, and uses a copy of the existing logic to implement
that callback for heap.

It probably would make sense to also move the index specific logic
into a callback, so the metapage handling (and probably more) can be
index specific. But that's a separate task.

Author: Andres Freund
Discussion: https://postgr.es/m/20180703070645.wchpu5muyto5n647@alap3.anarazel.de
---
 src/include/optimizer/plancat.h | 1 +
 1 file changed, 1 insertion(+)

(limited to 'src/include/optimizer')

diff --git a/src/include/optimizer/plancat.h b/src/include/optimizer/plancat.h
index c556e0f2589..3254613e6e4 100644
--- a/src/include/optimizer/plancat.h
+++ b/src/include/optimizer/plancat.h
@@ -33,6 +33,7 @@ extern List *infer_arbiter_indexes(PlannerInfo *root);
 extern void estimate_rel_size(Relation rel, int32 *attr_widths,
 				  BlockNumber *pages, double *tuples, double *allvisfrac);
 
+extern int32 get_rel_data_width(Relation rel, int32 *attr_widths);
 extern int32 get_relation_data_width(Oid relid, int32 *attr_widths);
 
 extern bool relation_excluded_by_constraints(PlannerInfo *root,
-- 
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