我想请求帮助在单个字段内交换值。表格如下:
表
FIELD1 FIELD2
X HELLO
Y TEST
基本上我想交换X和Y值(X变为TEST,Y变为HELLO)。已经知道如何在字段之间交换或移动值,但我对此有困难。抱歉蹩脚的桌子插图。
答案 0 :(得分:0)
这将成功完成您的工作
UPDATE
rules AS rule1
JOIN rules AS rule2 ON
( rule1.rule_id = 1 AND rule2.rule_id = 4 )
SET
rule1.priority = rule2.priority,
rule2.priority = rule1.priority
;