mysql存储过程实用游标调用动态sql，完整例子

DELIMITER $$

USE `txnfdb`$$

DROP PROCEDURE IF EXISTS `PD_VERIFICATION_TINDEXMIK30`$$

CREATE DEFINER=`root`@`%` PROCEDURE `PD_VERIFICATION_TINDEXMIK30`()
BEGIN
	-- -------------------------------临时变量------------------------------------------- 
	DECLARE TEMP_YEAR VARCHAR(10);
	DECLARE TEMP_MONTH VARCHAR(10);
	DECLARE TEMP_TABLE_NAME VARCHAR(100);
	DECLARE TEMP_BEGIN_TIME VARCHAR(30);
	DECLARE TEMP_END_TIME VARCHAR(30);
	DECLARE TEMP_SQL VARCHAR(1000);
	-- -------------------------------中间变量------------------------------------------- 
	DECLARE F_CODE VARCHAR(10);  -- 股票代码
	DECLARE F_CLOSE	DECIMAL(18,3);
	DECLARE F_VOLUME	DECIMAL(18,3);
	DECLARE F_AMOUNT	DECIMAL(18,3);
	DECLARE F_OPEN	DECIMAL(18,3);
	DECLARE F_HIGH	DECIMAL(18,3);
	DECLARE F_LOW	DECIMAL(18,3);
	DECLARE F_TIME INT;
	DECLARE F_SEQ BIGINT;
	DECLARE ERROE_MSG  VARCHAR(500); 
	-- ------------------------------游标相关定义----------------------------------------
	-- 定义游标遍历时，作为判断是否遍历完全部记录的标记
	DECLARE no_more_departments INTEGER DEFAULT 0; 
	-- 定义游标名字为C_RESULT 
	DECLARE C_RESULT CURSOR FOR SELECT * FROM tmp_index30_table;
	-- 声明当游标遍历完全部记录后将标志变量置成某个值
	DECLARE CONTINUE HANDLER FOR NOT FOUND  SET no_more_departments=1;
	-- ---------------------------------异常处理----------------------------------------
	-- 记录错误日志
	DECLARE CONTINUE HANDLER FOR SQLEXCEPTION 
	BEGIN 
		SET @err = fn_get_error(); 	
		INSERT INTO act_records(act,actTime,actDesc,flag)
		SELECT 'PD_VERIFICATION_TINDEXMIK30',NOW(),@err,1;
	END;
	
	
	
	
	SET TEMP_YEAR=DATE_FORMAT( NOW(), '%Y');
	SET TEMP_MONTH=DATE_FORMAT( NOW(), '%m');
	SET TEMP_TABLE_NAME=CONCAT('db.t_mik_index_30_',TEMP_YEAR,TEMP_MONTH);
	SET TEMP_BEGIN_TIME=CONCAT(DATE_FORMAT( NOW(), '%Y-%m-%d'),' 00:00:00');
	SET TEMP_END_TIME=CONCAT(DATE_FORMAT( NOW(), '%Y-%m-%d'),' 23:59:59');
	SET TEMP_SQL=CONCAT(' Create TEMPORARY Table tmp_index30_table( SELECT f_code,F_CLOSE,F_VOLUME,F_AMOUNT,F_OPEN,F_HIGH,F_LOW,f_time,f_SEQ  FROM  ',TEMP_TABLE_NAME, ' where f_update_time >=''',TEMP_BEGIN_TIME,'''  AND f_update_time<=''' ,TEMP_END_TIME,''' order by f_date , f_time)');
		-- 执行动态sql	
	SET @sql=TEMP_SQL;
	PREPARE stmt FROM @sql;  -- 预处理需要执行的动态SQL，其中stmt是一个变量
	EXECUTE stmt; -- 执行SQL语句
	DEALLOCATE PREPARE stmt;  --  释放掉预处理段
	
	
	OPEN C_RESULT;
		REPEAT  
		FETCH C_RESULT INTO  f_code,F_CLOSE,F_VOLUME,F_AMOUNT,F_OPEN,F_HIGH,F_LOW,f_time,f_SEQ ; 
	
			SET ERROE_MSG='';
			
			IF F_CLOSE = NULL OR F_CLOSE = 0 THEN
				SET ERROE_MSG=CONCAT('F_CLOSE 的值为' ,F_CLOSE);
			END IF;
			
			
			IF ERROE_MSG <> '' THEN
				INSERT INTO verification_records (info_type,table_name,codes,f_seq,error_msg,create_time ) 
				VALUES('1',TEMP_TABLE_NAME,F_CODE,f_SEQ,ERROE_MSG,NOW());
			END IF;
		UNTIL no_more_departments  END REPEAT;    -- 结束循环	
	CLOSE C_RESULT;
	DROP TEMPORARY TABLE tmp_index30_table; -- 删除临时表
END$$

DELIMITER ;