Question

请参阅我的查询，

insert into wp_9m8phu_term_relationships as rel
    (object_id,term_taxonomy_id,term_order)
values
    (
     'select object_id+1 as object_id from wp_9m8phu_term_relationships 
      where object_id!='' order by object_id desc limit 0,1',
     '".$fnds_id."',
     0
)

这是查询无效。有人在这方面帮助我。

Answer 1

您需要转义单引号（'）。您的查询应如下所示：

insert into wp_9m8phu_term_relationships as rel (object_id,term_taxonomy_id,term_order)
values('select object_id+1 as object_id from wp_9m8phu_term_relationships 
        where object_id!=\'\' order by object_id desc limit 0,1','".$fnds_id."',0
)

如果您从PHP调用该SQL语句（如第二个值所示），您应该确保转义变量$fnds_id中包含的引号（如果使用mysqli访问数据库，你应该使用mysqli::real_escape_string）。

Answer 2

我认为存在语法错误试试这个

insert into wp_9m8phu_term_relationships as rel (object_id,term_taxonomy_id,term_order)
values("select object_id+1 as object_id from wp_9m8phu_term_relationships 
        where object_id<>'' order by object_id desc limit 0,1",'".$fnds_id."',0)

mysql插入子查询不起作用

2 个答案: