如图：
sql语句如下
select p.*,c.[name] as compName,s.[name] as sellerName from percentage p left join company c on c.id = p.compId left join seller s on s.id = p.sellerId
解决方法：
在第一个left join附近加()
select p.*,c.[name] as compName,s.[name] as sellerName from (percentage p left join company c on c.id = p.compId) left join seller s on s.id = p.sellerId
正确结果
MS Acess不支持多个left join（语法错误（操作符丢失）在查询表达式 xx中）
原文：https://www.cnblogs.com/passedbylove/p/12272516.html