diff options
Diffstat (limited to 'src/backend/utils/cache/lsyscache.c')
| -rw-r--r-- | src/backend/utils/cache/lsyscache.c | 25 |
1 files changed, 21 insertions, 4 deletions
diff --git a/src/backend/utils/cache/lsyscache.c b/src/backend/utils/cache/lsyscache.c index 0dfa0eb7c79..0faa097f349 100644 --- a/src/backend/utils/cache/lsyscache.c +++ b/src/backend/utils/cache/lsyscache.c @@ -7,7 +7,7 @@ * Portions Copyright (c) 1994, Regents of the University of California * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/utils/cache/lsyscache.c,v 1.105 2003/08/04 02:40:06 momjian Exp $ + * $Header: /cvsroot/pgsql/src/backend/utils/cache/lsyscache.c,v 1.106 2003/08/11 23:04:49 tgl Exp $ * * NOTES * Eventually, the index information should go through here, too. @@ -180,11 +180,10 @@ get_op_hash_function(Oid opno) /* * get_attname - * * Given the relation id and the attribute number, * return the "attname" field from the attribute relation. * - * Note: returns a palloc'd copy of the string, or NULL if no such operator. + * Note: returns a palloc'd copy of the string, or NULL if no such attribute. */ char * get_attname(Oid relid, AttrNumber attnum) @@ -209,6 +208,24 @@ get_attname(Oid relid, AttrNumber attnum) } /* + * get_relid_attribute_name + * + * Same as above routine get_attname(), except that error + * is handled by elog() instead of returning NULL. + */ +char * +get_relid_attribute_name(Oid relid, AttrNumber attnum) +{ + char *attname; + + attname = get_attname(relid, attnum); + if (attname == NULL) + elog(ERROR, "cache lookup failed for attribute %d of relation %u", + attnum, relid); + return attname; +} + +/* * get_attnum * * Given the relation id and the attribute name, @@ -1443,7 +1460,7 @@ get_typtype(Oid typid) * get_typname * Returns the name of a given type. * - * Returns a palloc'd copy of the string, or NULL if no such relation. + * Returns a palloc'd copy of the string, or NULL if no such type. * * NOTE: since type name is not unique, be wary of code that uses this * for anything except preparing error messages. |