fix case when user as no other privileges than USAGE

plugins/modules/mysql_info.py

@@ -545,9 +545,6 @@ class MySQL_Info(object):
 
             priv_string = list()
             for db_table, priv in user_priv.items():
-                if db_table == '*.*' and priv == ['USAGE']:
-                    continue
-
                 # privileges_get returns "'''@''': 'PROXY,GRANT'". The % is missing
                 # and there is too many quotes. So we rewrite this. Also because we
                 # wrap the db_table between single quotes, I use backticks to
@@ -565,6 +562,10 @@ class MySQL_Info(object):
                 unquote_db_table = db_table.replace('`', '').replace("'", '')
                 priv_string.append('%s:%s' % (unquote_db_table, ','.join(priv)))
 
+            # Only keep *.* USAGE if it's the only user privilege given
+            if len(priv_string) > 1 and '*.*:USAGE' in priv_string:
+                priv_string.remove('*.*:USAGE')
+
             resource_limits = get_resource_limits(self.module, self.cursor, user, host)
 
             copy_ressource_limits = dict.copy(resource_limits)

tests/integration/targets/test_mysql_info/tasks/filter_users_privs.yml

@@ -75,6 +75,9 @@
           privs:
             'mysql.*': 'SELECT'
             'users_privs_db.*': 'SELECT'
+        - name: users_privs_usage_only
+          priv:
+            '*.*': 'USAGE'
 
     - name: Mysql_info users_privs | Prepare tests users for MariaDB
       community.mysql.mysql_user:
@@ -185,6 +188,7 @@
         - users_privs_table
         - users_privs_col
         - users_privs_proc
+        - users_privs_usage_only
 
     - name: Mysql_info users_privs | Cleanup sql file for the procedure
       ansible.builtin.file: