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Diffstat (limited to 'src/backend/utils/cache/lsyscache.c')
| -rw-r--r-- | src/backend/utils/cache/lsyscache.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/src/backend/utils/cache/lsyscache.c b/src/backend/utils/cache/lsyscache.c index 032bb6222c4..fa7cd7e06a7 100644 --- a/src/backend/utils/cache/lsyscache.c +++ b/src/backend/utils/cache/lsyscache.c @@ -26,6 +26,7 @@ #include "catalog/pg_class.h" #include "catalog/pg_collation.h" #include "catalog/pg_constraint.h" +#include "catalog/pg_database.h" #include "catalog/pg_index.h" #include "catalog/pg_language.h" #include "catalog/pg_namespace.h" @@ -1247,6 +1248,32 @@ get_constraint_type(Oid conoid) return contype; } +/* ---------- DATABASE CACHE ---------- */ + +/* + * get_database_name - given a database OID, look up the name + * + * Returns a palloc'd string, or NULL if no such database. + */ +char * +get_database_name(Oid dbid) +{ + HeapTuple dbtuple; + char *result; + + dbtuple = SearchSysCache1(DATABASEOID, ObjectIdGetDatum(dbid)); + if (HeapTupleIsValid(dbtuple)) + { + result = pstrdup(NameStr(((Form_pg_database) GETSTRUCT(dbtuple))->datname)); + ReleaseSysCache(dbtuple); + } + else + result = NULL; + + return result; +} + + /* ---------- LANGUAGE CACHE ---------- */ char * |