How can I create a view from more than one table?

问题:

I have to create a view from more than one table in an MS SQL Server database, but I am not able to get the correct syntax for the same.

回答1:

You'll have to provide more information about how you are looking to return data from more than one table. Typically you use JOINs:

CREATE VIEW your_view_vw AS
   SELECT *
     FROM TABLE_A a
     JOIN TABLE_B b ON b.pk = a.fk

...where fk stands for "Foreign Key", and pk stands for "Primary Key" - assuming these constraints are in place. Maybe you need to use a Cross join instead? Here's a great visual representation of JOINs visually.

Reference:

• CREATE VIEW

回答2:

You do this with JOINs, just like you would with a regular query.

If you can write a query that gets you the data, you should be able to write view nearly the exact same way.

Post what you have.

回答3:

example

create view ViewCustomerOrders
as
select * from Customer c
join Order o on o.CustomerID = c.CustomerID 

回答4:

create view viewname
as
select * from table a
join table b on b.col2 = a.col2

回答5:

create view view_name as select * from table_A a join table_B b on a.column_id = b.column_id