为什么在 UPDATE SET 中使用 AND 关键字时 MySQL 不抛出错误

Question

不正确的语法（第一个查询）似乎没有在 MySQL 中抛出错误，即使它显然是错误的。这是为什么？

这是不正确的语法

UPDATE 
    ATable
SET
    AColumn = '' AND
    BColumn = '' AND
    CColumn = ''
WHERE
    IDColumn = '';

这是正确的语法

UPDATE 
    ATable
SET
    AColumn = '',
    BColumn = '',
    CColumn = ''
WHERE
    IDColumn = '';

Answer 1

UPDATE Statement not generating syntax error when using AND instead of COMMA

这个问题在那里得到了回答。

SET NAME = '123' AND Address = '456'

is parsed to something like:

SET NAME = ('123' AND (Address = '456'))

which is one comparison and boolean AND of a string and boolean operands.

为什么在 UPDATE SET 中使用 AND 关键字时 MySQL 不抛出错误

Why doesn't MySQL throw an error when AND keywords are used in an UPDATE SET

mysql

syntax-error

mysql-error-1064