Question

我已经搜索过，但没有找到任何类型的答案，但是当我在我的phpmyadmin中尝试它时，它告诉我语法错误。有人可以快速浏览一下，让我知道这可能有什么问题：

UPDATE wellness_rsform_properties 
WHERE PropertyName = 'REQUIRED' 
AND PropertyValue = 'NO' 
REPLACE  (PropertyValue, 'NO', 'YES');

我真的很感激任何反馈！

谢谢，道格

Answer 1

UPDATE wellness_rsform_properties
SET PropertyValue = 'YES'
WHERE PropertyName = 'REQUIRED' AND PropertyValue = 'NO'

REPLACE功能不是必需的，因为您比较PropertyValue = 'NO'。如果您想将所有NO替换为YES，REPLACE将适用：

UPDATE wellness_rsform_properties
SET PropertyValue = REPLACE (PropertyValue, 'NO', 'YES')
WHERE PropertyName = 'REQUIRED' AND PropertyValue like '%NO%'

Answer 2

应该像

UPDATE wellness_rsform_properties 
SET PropertyValue = REPLACE('NO', 'YES') 
WHERE PropertyName = 'REQUIRED' AND PropertyValue = 'NO'

但是，您不需要使用替换，因为您知道列的新值，只需更新它：

UPDATE wellness_rsform_properties 
SET PropertyValue = 'YES' 
WHERE PropertyName = 'REQUIRED' AND PropertyValue = 'NO'

Answer 3

UPDATE wellness_rsform_properties 
set PropertyValue = REPLACE (PropertyValue, 'NO', 'YES')
where PropertyName = 'REQUIRED' AND PropertyValue = 'NO';

Answer 4

这应该做你似乎正在尝试的事情

UPDATE wellness_rsform_properties
SET PropertyValue = 'YES'
WHERE PropertyName ='REQUIRED'
AND PropertyValue = 'NO';

遵循语法

UPDATE <tables>
SET <field = value>
WHERE <criteria for which rows to update>

Answer 5

你的意思是？

UPDATE wellness_rsform_properties 
SET PropertyValue = 'YES'
WHERE PropertyName = 'REQUIRED' AND PropertyValue = 'NO';

Answer 6

UPDATE wellness_rsform_properties
SET PropertyValue = REPLACE(PropertyValue, 'NO', 'YES') 
WHERE PropertyName = 'REQUIRED' 
AND PropertyValue = 'NO';

我相信这就是你要找的东西。

简单的语法帮助新手

6 个答案: