如何从文字列表中查询:select*from('a','b','c')

Question

我正在使用mysql 5.5,这是一个带有literal列表的左连接查询 :

select tbl1.*, details.* 
from ('a', 'b', 'c'... 300+ elements) as 'tbl1' 
left join details
on 
details.id=tbl1.id

但它不起作用!

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 ''a','b')' at line 1

如何把它list作为一个表？

Answer 1

使用UNION

select tbl1.*, details.* 
from (select 'a'as id
      union
      select 'b' as id
      union
      select 'c' as id
      union
      ...300) as tbl1
left join details
on 
details.id=tbl1.id

请参阅此Fiidle Logic

而不是使用子查询,你可以先创建一个表tbl1作为

create table tbl1
(
id varchar(1)
)

insert into tbl1
select 'a' as id
union 
select 'b' as id
union 
select 'c' as id
....300

现在你可以使用表tbl1了join

select tbl1.*, details.* 
from 'tbl1' 
left join details
on 
details.id=tbl1.id