Mysql 數據庫操做

把一個表中數據更新到另外一個表：sql UPDATE cflow c, order o SET c.order_no = o.order_no WHERE a.`name` = o.`name` 表中某個字段爲varchar存儲的json格式，若想獲取json中某個屬性對應的值數據庫 SELECT REPLACE(REPLACE(UNHEX(SUBSTRING(HEX(rem

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