diff options
| author | Peter Eisentraut <peter@eisentraut.org> | 2020-03-13 11:28:11 +0100 |
|---|---|---|
| committer | Peter Eisentraut <peter@eisentraut.org> | 2020-03-13 11:57:06 +0100 |
| commit | 1cc9c2412cc9a2fbe6a381170097d315fd40ccca (patch) | |
| tree | 7f499b1405f4bec711fea0c9a7a852f8352809c7 /src/backend/utils/cache/lsyscache.c | |
| parent | b7f64c64d3262c309e2c5e8c11fd111b1dbd1a4a (diff) | |
Preserve replica identity index across ALTER TABLE rewrite
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
Diffstat (limited to 'src/backend/utils/cache/lsyscache.c')
| -rw-r--r-- | src/backend/utils/cache/lsyscache.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/src/backend/utils/cache/lsyscache.c b/src/backend/utils/cache/lsyscache.c index 6b24369de8f..27bbb58f564 100644 --- a/src/backend/utils/cache/lsyscache.c +++ b/src/backend/utils/cache/lsyscache.c @@ -3255,6 +3255,29 @@ get_index_column_opclass(Oid index_oid, int attno) } /* + * get_index_isreplident + * + * Given the index OID, return pg_index.indisreplident. + */ +bool +get_index_isreplident(Oid index_oid) +{ + HeapTuple tuple; + Form_pg_index rd_index; + bool result; + + tuple = SearchSysCache1(INDEXRELID, ObjectIdGetDatum(index_oid)); + if (!HeapTupleIsValid(tuple)) + return false; + + rd_index = (Form_pg_index) GETSTRUCT(tuple); + result = rd_index->indisreplident; + ReleaseSysCache(tuple); + + return result; +} + +/* * get_index_isvalid * * Given the index OID, return pg_index.indisvalid. |