mysql存储过程实例

本例子是基于mybits+mysql的存储过程实例

service类

@Override
public void profitMargin(String docOrderNo,String pmId) {
	try {
		Map maps = new HashMap();
		maps.put("pDocOrderNo", docOrderNo);
		maps.put("pmId", pmId);
		tOrderDocumentDao.profitMargin(maps);
	}catch(Exception e) {
		e.printStackTrace();
	}
}

dao类

/*
 * 计算利润率
 */
 void profitMargin(Map map);

mapping类

  	{call proc_profitMargin(
	    #{pDocOrderNo,jdbcType=VARCHAR,mode=IN},
	    #{pmId,jdbcType=VARCHAR,mode=IN})
	 }
  

存储过程实例

BEGIN
	
	DECLARE interpreterTotalPrice DECIMAL(10,2) DEFAULT 0.00;
	DECLARE r_profit_margin VARCHAR(20);
	
	-- 查找baseOrderNo
	SELECT IFNULL(t1.`p_order_no`,IFNULL(t1.`order_no`,IFNULL(t.`p_order_no`,t.order_no))) INTO @baseOrderNo FROM `t_order_document` t LEFT JOIN t_order_document t1 ON t1.`id` = t.p_id
		WHERE t.`order_no` = p_doc_order_no;
	-- 订单价格
	SELECT real_price,cost_price INTO @baserealPrice,@baseCostPirce FROM t_order_base WHERE order_no = @baseOrderNo;
	-- 加价
	SELECT IFNULL(SUM(fee),0) INTO @fee FROM `t_order_fee_add` WHERE order_no = @baseOrderNo;
	
	-- 译员总价格
	-- 查找所有子订单的orderNO
	SELECT GROUP_CONCAT(CONCAT('\'',order_no,'\'')) INTO @docOrderNos FROM t_order_document WHERE order_no  = p_doc_order_no;
	-- 拼接sql 
	SET @sql = CONCAT('SELECT SUM(cost_price) INTO @interpreterTotalPrice FROM t_order_document_link WHERE order_no IN (',@docOrderNos,') and del_state = \'1\'');	
	-- 执行
	PREPARE stmt FROM @sql;
	EXECUTE stmt;
	SET interpreterTotalPrice = @interpreterTotalPrice;
	
	DEALLOCATE PREPARE stmt;
	SET r_profit_margin = ROUND((1-ROUND(interpreterTotalPrice/@baserealPrice,4))*100,2);
	-- 修改base表利润率
	UPDATE t_order_base SET total_profit_margin = r_profit_margin , total_cost = interpreterTotalPrice WHERE order_no = @baseOrderNo;	
	
	-- 修改当前子订单的利润率
	SELECT SUM(cost_price) INTO interpreterTotalPrice FROM t_order_document_link WHERE order_no = p_doc_order_no  AND del_state = '1';
	 
	SELECT real_price INTO @docRealPrice FROM  t_order_document WHERE order_no = p_doc_order_no;
	
	SET @docRealPrice = @docRealPrice + (@docRealPrice/@baseCostPirce) * @fee;

	SET r_profit_margin = ROUND((1-ROUND(interpreterTotalPrice/@docRealPrice,4))*100,2);
	
	UPDATE 
	  t_order_document_link 
	SET
	  profit_margin = r_profit_margin
	WHERE order_no = p_doc_order_no
	  AND create_user = pm_id 
	  AND cir_tag IS NOT NULL 
	ORDER BY create_time DESC 
	LIMIT 1 ;
END

SQL总结（五）存储过程
http://www.cnblogs.com/yank/p/4235609.html

如下是另一个存储过程（未使用）

BEGIN
    
	DECLARE done INT DEFAULT 0; -- 循环标识
	DECLARE interpreterTotalPrice DECIMAL(10,2) DEFAULT 0.00; -- 译员总价格
	DECLARE refundFee DECIMAL(10,2) DEFAULT 0.00; -- 退款数额
	
	DECLARE r_profit_margin VARCHAR(20);  -- 利润率
	DECLARE linkId VARCHAR(50) DEFAULT '';  -- 环节总表Id
	DECLARE createTime TIMESTAMP;  -- 环节总表创建时间
	 
	DECLARE docId VARCHAR(36);  -- 文档表id
	DECLARE docOrderNo VARCHAR(36);  -- 文档表no
	DECLARE docRealPrice DECIMAL(10,2) DEFAULT 0.00;  -- 文档价格
	DECLARE docOrderNos VARCHAR(200) DEFAULT '';  -- 文档编号集合，使用逗号隔开
	
	DECLARE multilingual_record CURSOR FOR SELECT id,order_no,real_price FROM `t_order_document` WHERE del_state = '1' AND p_order_no = p_base_order_no;  -- 多语言文档游标
	DECLARE cur CURSOR FOR(SELECT id,create_time FROM doclink_view); -- 视图表
	DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = 1;
	
	-- 获取主订单总价格
	-- 订单价格
	SELECT real_price INTO @realPrice FROM t_order_base WHERE order_no = p_base_order_no;
	-- 加价
	SELECT IFNULL(SUM(fee),0) INTO @fee FROM `t_order_fee_add` WHERE order_no = p_base_order_no;
	-- 补差价
	SELECT IFNULL(SUM(cost_price),0) INTO @priceDifferences FROM `t_order_base` WHERE order_no LIKE CONCAT('%',p_base_order_no,'-BXJ%') AND del_state = '1'  AND pay_type IS NOT NULL;
		
	SELECT COUNT(1) INTO @countFlag FROM t_order_document WHERE order_no = p_base_order_no AND del_state = '1';
	
	IF @countFlag <> 0 THEN -- 单语言
		-- 计算base表的利润率
		-- 查询退款信息
		SELECT IFNULL(SUM(fee),0) INTO refundFee FROM `t_order_proc_refund` WHERE audit_state = '1' AND del_state  = '1'  AND order_no = p_base_order_no;
		SET @sumPrice = @realPrice +  @fee + @priceDifferences - refundFee;
		-- 计算总订单的利润率
		SELECT SUM(cost_price) INTO interpreterTotalPrice FROM t_order_document_link WHERE order_no = p_base_order_no  AND del_state = '1';
		
		SET r_profit_margin = ROUND((1-ROUND(interpreterTotalPrice/@sumPrice,4))*100,2);
		
		
		-- 修改base表利润率
		UPDATE t_order_base SET total_profit_margin = r_profit_margin , total_cost = interpreterTotalPrice WHERE order_no = p_base_order_no;	
		
		-- MySQL本身是不支持动态游标的，但可以通过（准备语句+视图+静态游标）的方法来近似实现。
		DROP VIEW IF EXISTS doclink_view;
		SET @sqlstr = CONCAT('CREATE VIEW doclink_view AS SELECT id, create_time  FROM t_order_document_link WHERE order_no = \'',p_base_order_no,'\' AND del_state = \'1\' AND cost_price IS NOT NULL');
		PREPARE stmt FROM @sqlstr;
		EXECUTE stmt;
		DEALLOCATE PREPARE stmt;
		OPEN cur;
			f_loop:LOOP FETCH cur INTO linkId,createTime;
				IF done THEN 
					LEAVE f_loop;  
				END IF;
				SELECT IFNULL(SUM(cost_price),0) INTO @docCostPrice FROM t_order_document_link WHERE order_no = p_base_order_no AND create_time <= createTime;
				-- 修改doc利润率
				SET r_profit_margin = ROUND((1-ROUND( @docCostPrice/@sumPrice,4))*100,2);
				UPDATE t_order_document_link SET profit_margin =  r_profit_margin WHERE id = linkId;
				
			END LOOP f_loop;
	        CLOSE cur;
	ELSE -- 多语言
		OPEN multilingual_record;
			f_loop:LOOP FETCH multilingual_record INTO docId,docOrderNo,docRealPrice;
				SELECT docId;
				IF done THEN 
					LEAVE f_loop;  
				END IF;
				IF docOrderNos = '' THEN
					SET docOrderNos = CONCAT('\'',docOrderNo,'\'');
				ELSE 
					SET docOrderNos = CONCAT(docOrderNos,',\'',docOrderNo,'\'');
				END IF;
				-- 查询退款信息
				SELECT IFNULL(SUM(fee),0) INTO @refundFee FROM `t_order_proc_refund` WHERE audit_state = '1' AND del_state  = '1'  AND order_no = docOrderNo;
				SET refundFee = refundFee + @refundFee;
				SET docRealPrice = docRealPrice - @refundFee + (docRealPrice/@realPrice) * (@fee + @priceDifferences);
				DROP VIEW IF EXISTS doclink_view;
				SET @sqlstr = CONCAT('CREATE VIEW doclink_view AS SELECT id,create_time FROM t_order_document_link WHERE order_no = \'',docOrderNo,'\' AND del_state = \'1\' AND cost_price IS NOT NULL');
				PREPARE stmt FROM @sqlstr;
				EXECUTE stmt;
				DEALLOCATE PREPARE stmt;
				OPEN cur;
					myLoop:LOOP FETCH cur INTO linkId,createTime;
						
						IF done THEN 
							LEAVE myLoop;  
						END IF;
						SELECT SUM(cost_price) INTO @docCostPrice FROM t_order_document_link WHERE order_no = docOrderNo AND create_time <= createTime;
						
						-- 修改doc利润率
						SET r_profit_margin = ROUND((1-ROUND(@docCostPrice/docRealPrice,4))*100,2);
						UPDATE t_order_document_link SET profit_margin = r_profit_margin WHERE id = linkId;
					END LOOP myLoop;
				CLOSE cur;
				SET done = 0;
			END LOOP f_loop;
	        CLOSE multilingual_record;
		SET @sumPrice = @realPrice +  @fee + @priceDifferences - refundFee;
		-- 计算总订单的利润率
		SET @sqlstr = CONCAT('SELECT SUM(cost_price) INTO interpreterTotalPrice FROM t_order_document_link WHERE order_no IN (',docOrderNos,')  AND del_state = \'1\'');
		SET r_profit_margin = ROUND((1-ROUND(interpreterTotalPrice/@sumPrice,4))*100,2);
		-- 修改base表利润率
		UPDATE t_order_base SET total_profit_margin = r_profit_margin , total_cost = interpreterTotalPrice WHERE order_no = p_base_order_no;	
	END IF;
END