sql - CREATE VIEW 必须是批处理中唯一的语句

Question

我正在尝试发表观点。到目前为止，我已经写了:

with ExpAndCheapMedicine(MostMoney, MinMoney) as
(
    select max(unitprice), min(unitprice)
    from Medicine
)
,
findmostexpensive(nameOfExpensive) as
(
    select tradename
    from Medicine, ExpAndCheapMedicine
    where UnitPrice = MostMoney
)
,
findCheapest(nameOfCheapest) as
(
    select tradename
    from Medicine, ExpAndCheapMedicine
    where UnitPrice = MinMoney
)

CREATE VIEW showing
as
select tradename, unitprice, GenericFlag
from Medicine;

不幸的是，我在包含 CREATE VIEW 显示 的行上收到错误

"CREATE VIEW must be the only statement in the batch"

我该如何解决这个问题？!

Answer 1

正如错误所示，CREATE VIEW 语句必须是查询批处理中的唯一语句。

在这种情况下，您有两种选择，具体取决于您想要实现的功能:

1. 将 CREATE VIEW 查询放在开头

   CREATE VIEW showing
   as
   select tradename, unitprice, GenericFlag
   from Medicine;
   
   with ExpAndCheapMedicine(MostMoney, MinMoney) as
   (
       select max(unitprice), min(unitprice)
       from Medicine
   )
   ,
   findmostexpensive(nameOfExpensive) as
   (
       select tradename
       from Medicine, ExpAndCheapMedicine
       where UnitPrice = MostMoney
   )
   ,
   findCheapest(nameOfCheapest) as
   (
       select tradename
       from Medicine, ExpAndCheapMedicine
           where UnitPrice = MinMoney
       )
   

2. 在 CTE 之后、CREATE VIEW 查询之前使用 GO

   -- 选项#2

   with ExpAndCheapMedicine(MostMoney, MinMoney) as
   (
       select max(unitprice), min(unitprice)
       from Medicine
   )
   ,
   findmostexpensive(nameOfExpensive) as
   (
       select tradename
       from Medicine, ExpAndCheapMedicine
       where UnitPrice = MostMoney
   )
   ,
   findCheapest(nameOfCheapest) as
   (
       select tradename
       from Medicine, ExpAndCheapMedicine
       where UnitPrice = MinMoney
   )
   
   GO    
   
   CREATE VIEW showing
   as
   select tradename, unitprice, GenericFlag
   from Medicine;