mysql使用存储过程, 给临时列创建索引排序,

CREATE PROCEDURE `testOrgan`() 
BEGIN
        DROP TABLE IF    EXISTS tmp_table;

        CREATE TEMPORARY TABLE `tmp_table`  (
      `city_code` varchar(32) DEFAULT NULL COMMENT '城市代码',
      `ins_code` varchar(32) DEFAULT NULL COMMENT '城市代码',
      `organ_type` varchar(12) DEFAULT NULL COMMENT '机构类型，H:医院；P:药店',
      `organ_name` varchar(64) NOT NULL COMMENT '机构名称',
      `organ_address` varchar(512) DEFAULT NULL COMMENT '机构地址',
      `organ_access_url` varchar(512) DEFAULT NULL COMMENT '机构跳转地址',
      `state` varchar(1) DEFAULT NULL COMMENT '状态',
      `longitude` double DEFAULT NULL COMMENT '经度',
      `latitude` double DEFAULT NULL COMMENT '维度',
      `area` varchar(32) DEFAULT NULL COMMENT '区域',
      `organ_category` varchar(32) DEFAULT NULL COMMENT '机构类目：医院资质、药店品牌',
      `adCode` varchar(32) DEFAULT NULL COMMENT '区域编码',
      `pyCode` varchar(32) DEFAULT NULL COMMENT '拼音首字母',
      `organ_catagery` varchar(20) DEFAULT NULL COMMENT '机构类别，现在区分少儿与成人。少儿：children',  
      `dis` double DEFAULT NULL COMMENT '距离',
      KEY `citycode` (`city_code`),
      KEY `inscode` (`ins_code`) USING BTREE,
      KEY `diS` (`dis`) USING BTREE
    ) ENGINE = InnoDB CHARACTER SET = utf8 COLLATE = utf8_bin COMMENT = '' ROW_FORMAT = Compact;
 
    insert into tmp_table(
                city_code,
                ins_code,
                organ_type,
                organ_name,
                organ_address,
                organ_access_url,
                longitude,
                latitude,
                area,
                organ_category,
                adCode,
                pyCode,
                organ_catagery,
                dis )  SELECT
                city_code,
                ins_code,
                organ_type,
                organ_name,
                organ_address,
                organ_access_url,
                longitude,
                latitude,
                area,
                organ_category,
                adCode,
                pyCode,
                organ_catagery,    
                ROUND(
                        6378.393 * 2 * ASIN(
                        SQRT(
                        POW(
                        SIN(
                        (
                        30.0
                        * PI() / 180 - latitude * PI() / 180
                        ) / 2
                        ),
                        2
                        ) +
                        COS(30.0 * PI() / 180) * COS(latitude * PI()
                        /
                        180) * POW(
                        SIN(
                        (
                        130.0 * PI() / 180 - longitude
                        * PI() / 180
                        ) / 2
                        ),
                        2
                        )
                        )
                        ) * 1000 * 1
                        )/1000 as dis                
            FROM
                wh_institution  
            WHERE
                city_code = 'SZ0755' and ins_code = 'SZHRSS'  and organ_type =
                'P' and state = '1' ;
        
        
    SELECT
        city_code,
        ins_code,
        organ_type,
        organ_name,
        organ_address,
        organ_access_url,
        longitude,
        latitude,
        area,
        organ_category,
        adCode,
        pyCode,
        organ_catagery,
        dis from tmp_table order by dis;
END