INSERT INTO SELECT FROM 语句的一个调试

两个表结构相同，第一个字段id是自增唯一的，因此不在搬运的字段列表里，其他字段都要复制过去。

先试了：

insert into leather_shoes_attachment_log(parent_id,object_id,attachment_filename,attachment_name,attachment_url,attachment_type,creator,create_time)
 select (parent_id,object_id,attachment_filename,attachment_name,attachment_url,attachment_type,creator,create_time)
 from leather_shoes_attachment
 where object_id ='MODULE_ATTACHMENT_20181102172032'

===================

系统提示：

[SQL]insert into leather_shoes_attachment_log(parent_id,object_id,attachment_filename,attachment_name,attachment_url,attachment_type,creator,create_time)
 select (parent_id,object_id,attachment_filename,attachment_name,attachment_url,attachment_type,creator,create_time)
 from leather_shoes_attachment
 where object_id ='MODULE_ATTACHMENT_20181102172032'

[Err] 1241 - Operand should contain 1 column(s)

===================

然后去掉select 后头的小括号：

insert into leather_shoes_attachment_log
(parent_id,object_id,attachment_filename,attachment_name,attachment_url,attachment_type,creator,create_time)
 select parent_id,object_id,attachment_filename,attachment_name,attachment_url,attachment_type,creator,create_time
 from leather_shoes_attachment
where object_id ='MODULE_ATTACHMENT_20181102172032';

===================

就对了。

[SQL]insert into leather_shoes_attachment_log
(parent_id,object_id,attachment_filename,attachment_name,attachment_url,attachment_type,creator,create_time)
 select parent_id,object_id,attachment_filename,attachment_name,attachment_url,attachment_type,creator,create_time
 from leather_shoes_attachment
where object_id ='MODULE_ATTACHMENT_20181102172032';
受影响的行: 1
时间: 0.003s