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;

或者

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

所有 phpAdmin 告诉我的是：

#1064 - 您的 SQL 语法有错误；检查与您的 MySQL 服务器版本相对应的手册，以在第 1 行的“WHERE unixtime <= CURDATE() LIMIT 10”附近使用正确的语法

Answer 1

您将ORDER BYandWHERE子句颠倒了。

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

或者

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

我刚刚意识到您的问题的一部分，因为您在WHERE子句中引用了别名。：

WHERE UNIX_TIMESTAMP(timestamp) <= CURDATE() 

或者

WHERE UNIX_TIMESTAMP(timestamp) < CURDATE() 

Answer 2

尝试这个

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

Answer 3

尝试以下操作：

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

Answer 4

您需要在 order by 语句之前使用 where 语句。