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-rw-r--r--src/bin/pg_upgrade/check.c13
1 files changed, 9 insertions, 4 deletions
diff --git a/src/bin/pg_upgrade/check.c b/src/bin/pg_upgrade/check.c
index 67eedbae265..1e17d64b3ec 100644
--- a/src/bin/pg_upgrade/check.c
+++ b/src/bin/pg_upgrade/check.c
@@ -1971,14 +1971,19 @@ check_for_unicode_update(ClusterInfo *cluster)
" SELECT oper.oid, oper.oprcode, collid FROM pg_operator oper, collations "
" WHERE oprname IN ('~', '~*', '!~', '!~*', '~~*', '!~~*') AND "
" oprnamespace='pg_catalog'::regnamespace AND "
- " oprright='text'::regtype "
+ " oprright='pg_catalog.text'::pg_catalog.regtype "
"), "
/* functions that use the input collation for character semantics */
"coll_functions(procid, collid) AS ( "
" SELECT proc.oid, collid FROM pg_proc proc, collations "
- " WHERE proname IN ('lower','initcap','upper') AND "
- " pronamespace='pg_catalog'::regnamespace AND "
- " proargtypes[0] = 'text'::regtype "
+ " WHERE pronamespace='pg_catalog'::regnamespace AND "
+ " ((proname IN ('lower','initcap','upper','casefold') AND "
+ " pronargs = 1 AND "
+ " proargtypes[0] = 'pg_catalog.text'::pg_catalog.regtype) OR "
+ " (proname = 'substring' AND pronargs = 2 AND "
+ " proargtypes[0] = 'pg_catalog.text'::pg_catalog.regtype AND "
+ " proargtypes[1] = 'pg_catalog.text'::pg_catalog.regtype) OR "
+ " proname LIKE 'regexp_%') "
/* include functions behind the operators listed above */
" UNION "
" SELECT procid, collid FROM coll_operators "