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我是 postgreSQL 的新手。我正在尝试执行一些简单的查询，但我遇到了一个错误。以下是一个简单的查询

select e.street, e.city 
from employee e join works w join managers m on e.Lastname=w.Lastname 
and w.Lastname=m.MLastname
where w.companyname='Union Pacific';

执行此查询时引发的错误是

ERROR:  syntax error at or near "where"
LINE 4: where w.companyname='Union Pacific';
        ^

********** Error **********

ERROR: syntax error at or near "where"
SQL state: 42601
Character: 124

我无法理解这个错误。需要一些帮助。

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2 回答 2

3

你的意思

select e.street, e.city 
from employee e
join works w
join managers m on (e.Lastname=w.Lastname and w.Lastname=m.MLastname)
where w.companyname='Union Pacific';

? 可能不是。可能你的意思是：

select e.street, e.city 
from works w
join employee e on w.Lastname=e.Lastname
join managers m on w.Lastname=m.MLastname
where w.companyname='Union Pacific';
于 2012-11-14T20:23:15.553 回答
1

The join of works lacks a join condition. Follow it with on or using.

于 2012-11-14T20:25:56.873 回答