MYSQL存储过程中表名使用变量_MySQL

SET tbl_name = CONCAT("result_", para_user);SET @STMT := CONCAT("SELECT COUNT(*) INTO @num_count FROM ", tbl_name ," WHERE rng = '", para_rng ,"' AND north_latitude = ", para_north ," AND bck_datetime = '", para_datetime ,"' AND east_longitude = ", para_east, ";"); PREPARE STMT FROM @STMT; EXECUTE STMT;