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Preserve replica identity index across ALTER TABLE rewrite

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If an index was explicitly set as replica identity index, this setting
was lost when a table was rewritten by ALTER TABLE.  Because this
setting is part of pg_index but actually controlled by ALTER
TABLE (not part of CREATE INDEX, say), we have to do some extra work
to restore it.

Based-on-patch-by: Quan Zongliang <quanzongliang@gmail.com>
Reviewed-by: Euler Taveira <euler.taveira@2ndquadrant.com>
Discussion: https://www.postgresql.org/message-id/flat/c70fcab2-4866-0d9f-1d01-e75e189db342@gmail.com
This commit is contained in:
Peter Eisentraut
2020-03-13 11:28:11 +01:00
parent b7f64c64d3
commit 1cc9c2412c
5 changed files with 133 additions and 0 deletions
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src/include/utils/lsyscache.h
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@@ -182,6 +182,7 @@ extern char *get_namespace_name_or_temp(Oid nspid);
extern Oid get_range_subtype(Oid rangeOid);
extern Oid get_range_collation(Oid rangeOid);
extern Oid get_index_column_opclass(Oid index_oid, int attno);
extern bool get_index_isreplident(Oid index_oid);
extern bool get_index_isvalid(Oid index_oid);
#define type_is_array(typid) (get_element_type(typid) != InvalidOid)