From 8924575c787ea62ed4d34cb25bbdccef6488e5df Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ricardo=20Ca=C3=B1uelo?= <ricardo.canuelo@collabora.com>
Date: Wed, 20 Mar 2024 09:15:46 +0100
Subject: [PATCH] postgresql: fix get_version() for older PostgreSQL versions

The bare 'RETURN' statement in get_version() is caught as a syntax error
by PostgreSQL 12.x. Return the integer literal using a simple SQL
statement instead.
---
 kcidb/db/postgresql/v04_00.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kcidb/db/postgresql/v04_00.py b/kcidb/db/postgresql/v04_00.py
index 4f47724f..93b6f22b 100644
--- a/kcidb/db/postgresql/v04_00.py
+++ b/kcidb/db/postgresql/v04_00.py
@@ -147,7 +147,7 @@ def set_schema_version(self, version):
                     RETURNS integer
                     LANGUAGE SQL
                     IMMUTABLE
-                    RETURN %s
+                    AS 'SELECT %s'
                 """), (number, ))
 
     def get_schema_version(self):