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Custom reloptions for table AM

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Let table AM define custom reloptions for its tables.  This allows to
specify AM-specific parameters by WITH clause when creating a table.

The code may use some parts from prior work by Hao Wu.

Discussion: https://postgr.es/m/CAPpHfdurb9ycV8udYqM%3Do0sPS66PJ4RCBM1g-bBpvzUfogY0EA%40mail.gmail.com
Discussion: https://postgr.es/m/AMUA1wBBBxfc3tKRLLdU64rb.1.1683276279979.Hmail.wuhao%40hashdata.cn
Reviewed-by: Reviewed-by: Pavel Borisov, Matthias van de Meent
This commit is contained in:
Alexander Korotkov
2024-03-30 22:36:25 +02:00
parent 27bc1772fc
commit c95c25f9af
8 changed files with 126 additions and 27 deletions
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12
src/backend/access/heap/heapam_handler.c
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@@ -23,6 +23,7 @@
#include "access/heapam.h"
#include "access/heaptoast.h"
#include "access/multixact.h"
#include "access/reloptions.h"
#include "access/rewriteheap.h"
#include "access/syncscan.h"
#include "access/tableam.h"
@@ -2155,6 +2156,16 @@ heapam_relation_toast_am(Relation rel)
return rel->rd_rel->relam;
}
static bytea *
heapam_reloptions(char relkind, Datum reloptions, bool validate)
{
Assert(relkind == RELKIND_RELATION ||
relkind == RELKIND_TOASTVALUE ||
relkind == RELKIND_MATVIEW);
return heap_reloptions(relkind, reloptions, validate);
}
/* ------------------------------------------------------------------------
* Planner related callbacks for the heap AM
@@ -2660,6 +2671,7 @@ static const TableAmRoutine heapam_methods = {
.relation_needs_toast_table = heapam_relation_needs_toast_table,
.relation_toast_am = heapam_relation_toast_am,
.relation_fetch_toast_slice = heap_fetch_toast_slice,
.reloptions = heapam_reloptions,
.relation_estimate_size = heapam_estimate_rel_size,