|
1.分批取數
declare @P1 int
set @P1=180150000
declare @P2 int
set @P2=8
declare @P3 int
set @P3=1
declare @P4 int
set @P4=3
exec sp_cursoropen @P1 output,
N''''select top 3 * from authors'''',
@P2 output,
@P3 output,
@P4 output
select @P1 , @P2 , @P3 , @P4
go
exec sp_cursorfetch 180150000, 16, 1, 1
go
exec sp_cursorfetch 180150000, 16, 2, 1
go
exec sp_cursorfetch 180150000, 16, 3, 1
go
exec sp_cursorfetch 180150000, 16, 4, 1
go
exec sp_cursorclose 180150000
go
exec sp_cursorfetch 180150000, 16, 1, 10 --從第1筆起,取10筆
exec sp_cursorclose 180150000
go
2.取相關ID的數據表
The table-valued function fn_FindReports(InEmpID), which -- given an Employee ID -- returns a table corresponding to all the employees that report to the given employee directly or indirectly. This logic is not expressible in a single query and is a good candidate for implementing as a user-defined function.
CREATE FUNCTION fn_FindReports (@InEmpId nchar(5))
RETURNS @retFindReports TABLE (empid nchar(5) primary key,
empname nvarchar(50) NOT NULL,
mgrid nchar(5),
title nvarchar(30))
/*Returns a result set that lists all the employees who report to given
employee directly or indirectly.*/
AS
BEGIN
DECLARE @RowsAdded int
-- table variable to hold accumulated results
DECLARE @reports TABLE (empid nchar(5) primary key,
empname nvarchar(50) NOT NULL,
mgrid nchar(5),
title nvarchar(30),
processed tinyint default 0)
-- initialize @Reports with direct reports of the given employee
INSERT @reports
SELECT empid, empname, mgrid, title, 0
FROM employees
WHERE empid = @InEmpId
SET @RowsAdded = @@rowcount
-- While new employees were added in the previous iteration
WHILE @RowsAdded > 0
BEGIN
/*Mark all employee records whose direct reports are going to be
found in this iteration with processed=1.*/
UPDATE @reports
SET processed = 1
WHERE processed = 0
-- Insert employees who report to employees marked 1.
INSERT @reports
SELECT e.empid, e.empname, e.mgrid, e.title, 0
FROM employees e, @reports r
WHERE e.mgrid=r.empid and e.mgrid <> e.empid and r.processed = 1
SET @RowsAdded = @@rowcount
/*Mark all employee records whose direct reports have been found
in this iteration.*/
UPDATE @reports
SET processed = 2
WHERE processed = 1
END
-- copy to the result of the function the required columns
INSERT @retFindReports
SELECT empid, empname, mgrid, title
FROM @reports
RETURN
END
GO
[办公软件]在sybase中插入图片、PDF、文本文件 [办公软件]安装Sybase ASE
[办公软件]linux指令大全(完整篇) [办公软件]Linux新手入门常用命令大全
[办公软件]在RedHat Linux 9里安装gaim0.80 [办公软件]浅谈Linux 下Java 1.5 汉字方块问题解决方法
[办公软件]Linux程序员必读：中文化与GB18030标准 [办公软件]linux指令大全
[办公软件]制作Linux启动盘的四种方法 [办公软件]Linux文件系统的反删除方法
|
注：本站部分文章源于互联网，版权归原作者所有！如有侵权，请原作者与本站联系，本站将立即删除！ 本站文章除特别注明外均可转载，但需注明出处！ [MinTao学以致用网] 
