--分頁（效果）儲存過程，游標的應用，表變數的使用；學習之用
--建表
create table student
( sno varchar(10) primary key,
sname nvarchar(10),
*** char(2),
age int,
dept nvarchar(10)
)--插入資料
insert into student values('1001','張三','男',20,'計算機')
insert into student values('1002','李四','男',18,'數學')
insert into student values('1003','趙六','女',19,'計算機')
insert into student values('1004','里斯','男',20, '數學')
insert into student values('1005','張三三','男',20,'計算機')
insert into student values('1006','李四四','男',18,'數學')
insert into student values('1007','趙六六','女',19,'計算機')
insert into student values('1008','里斯四','男',20, '數學')
insert into student values('1009','里斯五','男',20, '數學')
go--建立分頁(效果)的儲存過程第二版,@tn表名,@cnt每次顯示的記錄數
create proc splitpages;2(@tn nvarchar(30)='student', @cnt int=3) as
begin
--宣告游標
declare curselect cursor for
select sno, sname, ***, age, dept from student
--宣告變數
declare @i int, @sno varchar(10), @sname nvarchar(10)
declare @*** char(2),@age int, @dept nvarchar(10)
declare @t table(--宣告表變數
sno varchar(10),
sname nvarchar(10),
*** char(2),
age int,
dept nvarchar(10))
open curselect --開啟游標
--從游標提取到變數中
fetch next from curselect into @sno, @sname, @***, @age, @dept
set @i=0
while @@fetch_status=0--能提取到資料
begin
set nocount on
insert into @t values(@sno, @sname, @***, @age, @dept)--插入結果到表變數
set @i=@i+1
if @i % @cnt = 0 --夠@cnt個後輸出
begin
select * from @t
delete from @t --清空表變數,為下次存放結果作準備
endfetch next from curselect into @sno, @sname, @***, @age, @dept
endif exists(select * from @t) select * from @t --不夠@cnt的剩餘記錄輸出
close curselect --關閉游標
deallocate curselect --釋放游標
endgo
exec splitpages;2 --以每次預設3條記錄的形式呼叫
exec splitpages;2 'student', 4 --以每次4條記錄的形式呼叫
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