Question

我有一个select查询，我想在视图和另一个表上进行连接。视图工作正常，表格也是如此。但是，当我尝试做类似的事情时：

select VIEW.col1, VIEW.col2
from VIEW, TABLE
where VIEW.col1 = TABLE.col1

我得到The multi-part identifier "VIEW.col1" could not be bound.

语法是错误的，还是仅允许在视图上使用？

Answer 1

这应该有效

select v.col1, t.col2
from VIEW v, TABLE t
where v.col1 = t.col1

Answer 2

SELECT VIEW.col1, VIEW.col2
from VIEW AS VIEW INNER JOIN TABLE AS TABLE
ON VIEW.col1 = TABLE.col1

Answer 3

SELECT MYVIEWNAME.col1, MYVIEWNAME.col2
FROM VIEWNAME AS MYVIEWNAME INNER JOIN TABLENAME AS MYTABLENAME
ON MYVIEWNAME.col1 = MYTABLENAME.col1

Answer 4

我建议您使用左连接或内连接，并对表和视图进行别名。

select v.col1 , v.col2

 from view v
 inner join table t on t.col1 = v.col1

Answer 5

您必须view喜欢：

create table MyView
as
select column1 as col1, column2 as col2
from tab

or

CREATE VIEW MyView (col1,col2)
as
select column1, column2
from tab

然后你可以加入它：

select MyView.col1, MyView.col2
from MyView, TABLE
where MyView.col1 = MyView.col1

or

select v.col1, v.col2
from MyView v, TABLE t
where t.col1 = t.col1

or

select v.col1, v.col2
from MyView v
join TABLE t on t.col1 = t.col1

也许某些示例不适用于所有RDBMS。

sql从视图和表中选择

5 个答案: