DELETE FROM`table` AS`alias` ... WHERE`alias``column` ...为什么语法错误？

Question

我用MySQL试过这个:

DELETE FROM `contact_hostcommands_relation` AS `ContactHostCommand` WHERE (`ContactHostCommand`.`chr_id` = 999999) LIMIT 1

我得到了这个:

#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 (`ContactHostCommand`.`chr_id` = 999999) LIMIT 1' at line 1

注意:此查询是自动生成的,条件基于表别名.

为什么我会收到此错误？

有没有办法在where子句中使用表别名？

这个MySQL是否具体？

Answer 1

@Matus和@CeesTimmerman关于MSSQL的内容也适用于MySQL 5.1.73:

delete <alias> from <table> <alias> where <alias>.<field>...

Answer 2

您可以像这样使用SQL:

DELETE FROM ContactHostCommand 
USING `contact_hostcommands_relation` AS ContactHostCommand 
WHERE (ContactHostCommand.`chr_id` = 999999) 
LIMIT 1

Answer 3

你不能AS在DELETEMySQL 的子句中使用:

DELETE FROM `contact_hostcommands_relation` WHERE (`chr_id` = 999999) LIMIT 1