mysql - 此SQL语句有什么问题-语法错误＃1064？

Question

SELECT id, content, UNIX_TIMESTAMP(timestamp) AS unixtime 
FROM data
ORDER BY id ASC 
WHERE unixtime <= CURDATE() LIMIT 10;

或

SELECT id, content, UNIX_TIMESTAMP(timestamp) AS unixtime 
FROM data
ORDER BY id ASC 
WHERE unixtime < CURDATE() LIMIT 10;

phpmyAdmin告诉我的全部是:

#1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'WHERE unixtime <= CURDATE() LIMIT 10' at line 1

Answer 1

您将ORDER BY和WHERE子句颠倒了。

SELECT id, content, UNIX_TIMESTAMP(timestamp) AS unixtime 
FROM data
WHERE unixtime < CURDATE()
ORDER BY id ASC LIMIT 10;

要么

SELECT id, content, UNIX_TIMESTAMP(timestamp) AS unixtime 
FROM data
WHERE unixtime <= CURDATE() 
ORDER BY id ASC LIMIT 10;

我刚刚意识到问题的一部分，因为您在WHERE子句中引用了别名:

WHERE UNIX_TIMESTAMP(timestamp) <= CURDATE() 

要么

WHERE UNIX_TIMESTAMP(timestamp) < CURDATE()