ALTER TABLE IF EXISTS testschema."table_3_$%{}[]()&*^!@""'`\/#"
    ALTER COLUMN "col__1_$%{}[]()&*^!@""'`\/#" SET DEFAULT 'changed default value';

GRANT SELECT("col__1_$%{}[]()&*^!@""'`\/#") ON testschema."table_3_$%{}[]()&*^!@""'`\/#" TO PUBLIC;
