[英]mysql update multiples why doesn't it work? Oh and php also
I don't understand why this won't work, each line one by one works but not when I join them together... 我不明白为什么这行不通,每一行都一个接一个地起作用,但是当我将它们连接在一起时却不起作用...
mysql_query("
UPDATE imageProperties
SET value='98' WHERE element='img1' AND property='left';
SET value='67' WHERE element='img1' AND property='top';
SET value='15' WHERE element='img1' AND property='width';
SET value='15' WHERE element='img1' AND property='height';
SET value='22' WHERE element='img2' AND property='left';
SET value='49' WHERE element='img2' AND property='top';
SET value='62' WHERE element='img2' AND property='width';
SET value='75' WHERE element='img2' AND property='height';
");
I got the idea from the answer to this question here 我从答案的想法,这个问题在这里
syntax is wrong.you should have UPDATE imageProperties for each set: 语法错误。每个集合都应具有UPDATE imageProperties:
UPDATE imageProperties
SET value='98' WHERE element='img1' AND property='left';
UPDATE imageProperties
SET value='67' WHERE element='img1' AND property='top';
UPDATE imageProperties
SET value='15' WHERE element='img1' AND property='width';
try it by using CASE statment in one statment. 在一则陈述中使用CASE陈述来尝试一下。
UPDATE imageProperties
SET value= CASE when element='img1' AND property='left' then '98'
when element='img1' AND property='top' then '67'
when element='img1' AND property='width' then '15'
when element='img1' AND property='height' then '15'
when element='img2' AND property='left' then '22'
when element='img2' AND property='top' then '49'
when element='img2' AND property='width' then '62'
when element='img2' AND property='height' then '75'
ELSE `value`
END
You are terminating the statement with each semicolon. 您将用每个分号终止该语句。
This should work: 这应该工作:
mysql_query("
UPDATE imageProperties
SET value='98' WHERE element='img1' AND property='left';
UPDATE imageProperties
SET value='67' WHERE element='img1' AND property='top';
UPDATE imageProperties
SET value='15' WHERE element='img1' AND property='width';
UPDATE imageProperties
SET value='15' WHERE element='img1' AND property='height';
UPDATE imageProperties
SET value='22' WHERE element='img2' AND property='left';
UPDATE imageProperties
SET value='49' WHERE element='img2' AND property='top';
UPDATE imageProperties
SET value='62' WHERE element='img2' AND property='width';
UPDATE imageProperties
SET value='75' WHERE element='img2' AND property='height';
");
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