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Add comment noting that hashm_procid in a hash index's metapage isn't
2007年1月29日 23:22:59 +0000 (23:22 +0000)
2007年1月29日 23:22:59 +0000 (23:22 +0000)
actually used for anything.


diff --git a/src/backend/access/hash/hashpage.c b/src/backend/access/hash/hashpage.c
index e1cf17b282dfca1788dd67e15697ff12f8c85d75..97eb3c379ee62e98ebfebbcd597f0ed8bedca021 100644 (file)
--- a/src/backend/access/hash/hashpage.c
+++ b/src/backend/access/hash/hashpage.c
@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
- * $PostgreSQL: pgsql/src/backend/access/hash/hashpage.c,v 1.63 2007年01月05日 22:19:22 momjian Exp $
+ * $PostgreSQL: pgsql/src/backend/access/hash/hashpage.c,v 1.64 2007年01月29日 23:22:59 tgl Exp $
*
* NOTES
* Postgres hash pages look like ordinary relation pages. The opaque
@@ -275,6 +275,11 @@ _hash_metapinit(Relation rel)
metap->hashm_bmshift = i + BYTE_TO_BIT;
Assert((1 << BMPG_SHIFT(metap)) == (BMPG_MASK(metap) + 1));
+ /*
+ * Label the index with its primary hash support function's OID. This is
+ * pretty useless for normal operation (in fact, hashm_procid is not used
+ * anywhere), but it might be handy for forensic purposes so we keep it.
+ */
metap->hashm_procid = index_getprocid(rel, 1, HASHPROC);
/*
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