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-- `CREATE USER` does not support `IF NOT EXISTS`, so we use this workaround to prevent an error and raise a notice instead.
-- Seen here: https://stackoverflow.com/a/49858797
DO $$
BEGIN
CREATE USER "{{ additional_db.username }}";
EXCEPTION WHEN DUPLICATE_OBJECT THEN
RAISE NOTICE 'not creating user "{{ additional_db.username }}", since it already exists';
END
$$;
-- This is useful for initial user creation (since we don't assign a password above) and for handling subsequent password changes
-- TODO - we should escape quotes in the password.
ALTER ROLE "{{ additional_db.username }}" PASSWORD '{{ additional_db.password }}';
-- This will generate an error on subsequent execution
CREATE DATABASE "{{ additional_db.name }}" WITH LC_CTYPE 'C' LC_COLLATE 'C' OWNER "{{ additional_db.username }}";
-- This is useful for changing the database owner subsequently
ALTER DATABASE "{{ additional_db.name }}" OWNER TO "{{ additional_db.username }}";