错误代码: 1292。截断不正确的双值

Question

我试图通过查询插入数据：

insert into email (emailAddress, isPreferredEmail, customer_id, upload_id)
select cast(Email as char(100)) a,
       TRUE,
       (select id from customer c where c.dbvehregno=ChassisNo),
       uploadid
  from hyundaiindividualreport
 where id in (select max(id) 
                from hyundaiindividualreport 
               where length(Email>=5) 
                 and uploadid=900 
               group by ChassisNo);

但它扔的是：

错误代码: 1292。截断不正确的双值

电子邮件表格结构：

 Table: email
Columns:
email_Id bigint(20) AI PK, 
emailAddress varchar(300) ,
isPreferredEmail bit(1) ,
updatedBy varchar(255) ,
customer_id bigint(20) ,
upload_id varchar(255)

Answer 1

这个表达式看起来不对：

length(Email >= 5)

我想你是说：

length(Email) >= 5

然而，令人惊讶的是，它会在MySQL中生成特定的错误。