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Make pg_tablespace_location(0) return the database's default tablespace.

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This definition is convenient when applying the function to the
reltablespace column of pg_class, since that's what zero means there;
and it doesn't interfere with any other plausible use of the function.
Per gripe from Bruce Momjian.
This commit is contained in:
Tom Lane
2012-04-10 21:42:46 -04:00
parent 38458e4573
commit 3769fa5fc6
1 changed files with 9 additions and 1 deletions
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10
src/backend/utils/adt/misc.c
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@@ -335,7 +335,15 @@ pg_tablespace_location(PG_FUNCTION_ARGS)
int rllen; int rllen;
/* /*
* Return empty string for our default tablespaces * It's useful to apply this function to pg_class.reltablespace, wherein
* zero means "the database's default tablespace". So, rather than
* throwing an error for zero, we choose to assume that's what is meant.
*/
if (tablespaceOid == InvalidOid)
tablespaceOid = MyDatabaseTableSpace;
/*
* Return empty string for the cluster's default tablespaces
*/ */
if (tablespaceOid == DEFAULTTABLESPACE_OID || if (tablespaceOid == DEFAULTTABLESPACE_OID ||
tablespaceOid == GLOBALTABLESPACE_OID) tablespaceOid == GLOBALTABLESPACE_OID)