chore(postgresql): create role and user statements do not use if not exists

snippets/ansible/tasks.yml

@@ -110,7 +110,6 @@
       # remove anything involving 'rdsadmin'
       # remove changes to protected RDS users
       # remove protected 'superuser' and 'replication' assignments
-      # add 'IF NOT EXISTS' to creation statements
       vars:
         # **Hack notice**: Ansible has issues with splitting on new lines if this template is quoted differently
         permissions_dump_content_as_lines: "{{ dump_file.content | ansible.builtin.b64decode | split('\n') }}"
@@ -125,7 +124,6 @@
             | reject('match', '.*rdsadmin.*')
             | reject('match', '^(CREATE|ALTER) ROLE rds_')
             | map('regex_replace', '(NO)(SUPERUSER|REPLICATION)\s?', '')
-            | map('regex_replace', '(CREATE \w+ \w+)(.*)', '\1 IF NOT EXISTS\2')
           }}
 
 - name: Manipulate dictionaries

snippets/postgresql.sql

@@ -69,6 +69,15 @@ select usename FROM pg_catalog.pg_user;
 -- Check the current user has SuperUser permissions
 SHOW is_superuser
 
+-- Create roles
+-- Does *not* support IF NOT EXISTS
+CREATE ROLE miriam;
+CREATE ROLE miriam WITH LOGIN PASSWORD 'jw8s0F4' VALID UNTIL '2005-01-01';
+
+-- Create users
+-- Does *not* support IF NOT EXISTS
+CREATE USER mike;
+
 -- Grant users SuperUser permissions
 -- Executing user must be already SuperUser
 ALTER USER joel WITH SUPERUSER;