选择光标中的语句

Question

我们可以在游标中使用select查询吗？

例:

CREATE PROCEDURE try  
AS  
            SET NOCOUNT ON  
Declare     @dname nvarchar(50),  
            @ename nvarchar(50),  
            @esal int


Declare curP cursor For

select d.dname,e.ename,e.sal from dept d,emp e where e.deptno=d.deptno

OPEN curP  
Fetch Next From curP Into @dname, @ename,@esal

While @@Fetch_Status = 0 Begin


select dname from curp          // this is it possible?i dont want to use print bcs i want                        to display data in tabular form  



Fetch Next From curP Into @dname,@ename,@esal

End -- End of Fetch

Close curP
Deallocate curP

Answer 1

如果你想用光标做:

CREATE PROCEDURE try  
AS  
            SET NOCOUNT ON  
Declare     @dname nvarchar(50)


DECLARE curP CURSOR FOR

SELECT d.dname FROM dept d

OPEN curP  
FETCH NEXT FROM curP INTO @dname

WHILE @@Fetch_Status = 0 

BEGIN

    SELECT 0 AS OrderBy, @dname , '' AS sal
    union
    SELECT 1, 
           ename , 
           CONVERT(VARCHAR,sal) AS sal
    FROM   emp
    WHERE  deptno = @dname
    ORDER BY OrderBy

    FETCH NEXT FROM curP INTO @dname

End 

Close curP
Deallocate curP

以上将导致:

????????????????
? Tech     ?   ?
? Vikrant  ? 5 ?
? Nimesh   ? 2 ?
????????????????  
????????????????
? Creative ?   ?
? Memo     ? 6 ?
? Sabir    ? 5 ?
????????????????  

还有另一种想法:

;WITH DeptsCTE AS
(
    SELECT deptno,
           dname,
           ROW_NUMBER() OVER (ORDER BY deptno) AS rn
    FROM   dept
)
SELECT dname, 
       sal
FROM   
(
    SELECT D.rn,
           0 AS drn,
           dname, 
           '' AS sal
    FROM   DeptsCTE  D
    UNION
    SELECT D.rn,
           1 AS drn,
           ename , 
           CONVERT(VARCHAR,sal) AS sal
    FROM   emp E
           JOIN DeptsCTE D
               ON D.deptno = E.deptno 
) AS T    
ORDER BY rn,drn