从减号到连接的SQL查询

Question

如何翻译以下查询：

select col1,col2,col3 from table1
minus
select col1,col2,col3 from table2

进入使用join子句的查询？

Answer 1

select t1.col1, t1.col2, t1.col3 
from table1 t1
left join table2 t2 on t1.col1 = t2.col1 and t1.col2 = t2.col2 and t1.col3 = t2.col3
where t2.col1 is null

SQLFiddle