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  • Mysql 游标使用

    BEGIN
            #shopsId 商家ID
            #accountDay 10位日期 2018-01-09
            -- 定义一个或者多个 变量来接收 游标查询的列值
            DECLARE receiptContentId INT;   
    
            -- 遍历数据结束标志
            DECLARE done INT DEFAULT FALSE;
            -- 游标内容
            DECLARE cursor_receipt_content CURSOR FOR select id from t_shopping_receipt_content where shops_id=shopsId 
                and grasping_time >= STR_TO_DATE(CONCAT(accountDay,' 00:00:00'), '%Y-%m-%d %H:%i:%s')
                and grasping_time <= STR_TO_DATE(CONCAT(accountDay,' 23:59:59'), '%Y-%m-%d %H:%i:%s');
           -- 将结束标志绑定到游标
            DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = TRUE;  
            
            -- 打开游标
            OPEN cursor_receipt_content;  
           r_loop: LOOP  
                        -- 提取游标里的数据,这里只有一个,多个用","逗号隔开
                        FETCH cursor_receipt_content INTO receiptContentId;
                        IF done THEN  
                                LEAVE r_loop; 
                        END IF;  
                        -- 这里做你想做的循环的事件
                        DELETE FROM t_receipt_detail_content   WHERE receipt_content_id = receiptContentId;
                        DELETE FROM t_shopping_receipt_content WHERE id = receiptContentId;
          END LOOP r_loop;
            -- 关闭游标
          CLOSE cursor_receipt_content; 
        RETURN 0;
    END
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  • 原文地址:https://www.cnblogs.com/eason-d/p/8275596.html
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