MySQL函数过程示例-根据视图和游标删除数据

注：游标和视图结合起来使用，因为游标不支持动态表传入。
参数

IN esCorCode varchar(20),IN startTime varchar(50),IN endTime varchar(50)

存储过程

BEGIN
-- CALL P_DELETE_SERVICE_DATA('10000','2015-12-23 15:00:00','2015-12-23 15:58:00');

DECLARE count_val INT;

DECLARE cur_in CURSOR FOR SELECT count FROM view_into_table;

DECLARE cur_out CURSOR FOR SELECT count FROM view_out_table;
-- ---------------------------------------------创建视图-------------------------------------开始---------------------------
drop view if exists view_into_table;
set @view_into_sql=concat("create view view_into_table as select COUNT(WMIO_ID) count from  WM_INTO_ORDER_",esCorCode,' WHERE WMIO_COMPLETION_TIME ',' between ','"',startTime,'"',' and ','"',endTime,'"');
PREPARE stmt FROM  @view_into_sql;
EXECUTE stmt;

drop view if exists view_out_table;
set @view_out_sql=concat("create view view_out_table as select COUNT(WMOO_ID) count from WM_OUT_ORDER_",esCorCode,' WHERE SURE_DATE ',' between ','"',startTime,'"',' and ','"',endTime,'"');
PREPARE stmt FROM  @view_out_sql;
EXECUTE stmt;
-- ---------------------------------------------创建视图-------------------------------------结束---------------------------
SET @index_=1;
-- ---------------------------------------------业务数据表-------------------------------------------------------
SET @array_tables=CONCAT('WM_INTO_ORDER');                       -- 入库表

SET @array_tables=CONCAT(@array_tables,',','WM_OUT_ORDER');      -- 出库表

SET @array_tables=CONCAT(@array_tables,',','WM_WAREHOUSE_MOVE'); -- 移库表

SET @array_tables=CONCAT(@array_tables,',','WM_BATCH_PICKING');  -- 波次表

SET @array_tables=CONCAT(@array_tables,',','EB_SYS_LOG');        -- 系统日志表

SET @array_tables=CONCAT(@array_tables,',','EB_OPERATE_LOG');    -- 操作日志表

SET @array_tables=CONCAT(@array_tables,',','EB_INTO_STOCK_LOG'); -- 入库日志表

SET @array_tables=CONCAT(@array_tables,',','EB_OUT_STOCK_LOG');  -- 出库日志表

-- ---------------------------------------------业务数据表对应字段------------------------------------------------

SET @array_fields=CONCAT('WMIO_COMPLETION_TIME');              --  入库表    完成时间标识

SET @array_fields=CONCAT(@array_fields,',','SURE_DATE');       --  出库表    出库确认时间标识

SET @array_fields=CONCAT(@array_fields,',','WWM_COMPLETION_TIME');     --  移库表    完成时间标识

SET @array_fields=CONCAT(@array_fields,',','RE_TIME');         --  波次表            波次释放时间标识

SET @array_fields=CONCAT(@array_fields,',','CREATE_TIME');     --  系统日志表        创建时间标识

SET @array_fields=CONCAT(@array_fields,',','CREATE_TIME');     --  操作日志表        创建时间标识

SET @array_fields=CONCAT(@array_fields,',','CREATE_TIME');     --  入库日志表        创建时间标识

SET @array_fields=CONCAT(@array_fields,',','CREATE_TIME');     --  出库日志表        创建时间标识
-- ---------------------------------------------计算循环次数------------------------------------------------------         
SET @table_count=CHAR_LENGTH(@array_tables)-CHAR_LENGTH(REPLACE(@array_tables,',',''))+1; 

-- ---------------------------------------------执行业务数据操作--------------------------------------------------

WHILE @index_ <= @table_count DO

  SET @table_prex=SUBSTRING_INDEX(SUBSTRING_INDEX(@array_tables,',',@index_),',',-1);

  SET @table_name=CONCAT(@table_prex,'_',esCorCode);

  SET @fieldName=SUBSTRING_INDEX(SUBSTRING_INDEX(@array_fields,',',@index_),',',-1);

  SET @delete_data=CONCAT('delete from ',@table_name ,' where ',@fieldName,' between ','"',startTime,'"',' and ','"',endTime,'"');

  -- 入库单删除时删除对应的：入库明细、收货信息、退回信息
  IF @table_prex = 'WM_INTO_ORDER' THEN

       OPEN cur_in;

       FETCH cur_in INTO count_val;

       IF count_val>0 THEN
           -- 查询符合条件的入库单ID
           SET @into_order_ids=CONCAT('SELECT WMIO_ID FROM ',@table_name,' where ',@fieldName,' between ','"',startTime,'"',' and ','"',endTime,'"');

           SET @into_orderinfo_ids=CONCAT('SELECT WMOF_ID FROM WM_INTO_ORDERINFO_',esCorCode,' where  WMOF_IO_ID in ','(',@into_order_ids,')');

           -- 删除 入库ID对应的入库明细
           SET @WM_INTO_ORDERINFO=CONCAT('WM_INTO_ORDERINFO_',esCorCode);

           SET @delete_into_orderinfo=CONCAT('delete from ',@WM_INTO_ORDERINFO,' where  WMOF_IO_ID in ','(',@into_order_ids,')');

           -- 删除 入库ID对应的收货信息
           SET @WM_RECEIPT_INFO=CONCAT('WM_RECEIPT_INFO_',esCorCode);

           SET @delete_receipt_info=CONCAT('delete from ',@WM_RECEIPT_INFO,' where  WMRPS_OF_ID in ','(',@into_orderinfo_ids,')');

           -- 删除 入库ID对应的退货信息
           SET @WM_RETURN_INFO=CONCAT('WM_RETURN_INFO_',esCorCode);

           SET @delete_return_info=CONCAT('delete from ',@WM_RETURN_INFO,' where WMSP_OF_ID in ','(',@into_orderinfo_ids,')');

           -- 删除过程中要注意删除顺序
           prepare delete_talbe_data from @delete_receipt_info; 
           execute delete_talbe_data; 

           prepare delete_talbe_data from @delete_return_info; 
           execute delete_talbe_data; 

           prepare delete_talbe_data from @delete_into_orderinfo; 
           execute delete_talbe_data; 

           prepare delete_talbe_data from @delete_data; 
           execute delete_talbe_data; 

       END IF;

       CLOSE cur_in;

 --  删除出库对应的出库详情及出库计划
 ELSEIF @table_prex = 'WM_OUT_ORDER' THEN

       OPEN cur_out;

       FETCH cur_out INTO count_val;

       IF count_val>0 THEN
           -- 查询符合条件的出库单ID
           SET @out_order_ids=CONCAT('SELECT WMOO_ID FROM ',@table_name,' where ',@fieldName,' between ','"',startTime,'"',' and ','"',endTime,'"');

           -- 删除 出库ID对应的出库明细
           SET @WM_OUT_ORDER_DETAIL=CONCAT('WM_OUT_ORDER_DETAIL_',esCorCode);

           SET @delete_out_order_detail=CONCAT('delete from ',@WM_OUT_ORDER_DETAIL,' where  WMOD_OUT_ORDER_ID in ','(',@out_order_ids,')');

           -- 删除过程中要注意删除顺序

           prepare delete_talbe_data from @delete_out_order_detail; 
           execute delete_talbe_data; 

           prepare delete_talbe_data from @delete_data; 
           execute delete_talbe_data; 

       END IF;

       CLOSE cur_out;
 ELSE

   prepare delete_talbe_data from @delete_data; 

   execute delete_talbe_data; 

 END IF;
 
  SET @index_=@index_+1; 

END WHILE; 

END