2023年12月18日 21:52:24 xxc1605629895 閱讀數 7033更多
分類專欄： sqlserver
最近用到了sql server的幾種結果集返回方法，這裡整理如下（注：使用sql server 的 adventureworks2008 示例資料庫）
-- 1. table function
use adventureworks2008
go
if exists (
select 1
from sys.objects
where [type] in (n'tf' ,n'if' ,n'fn')
and name = 'fn_getperson'
)
drop function dbo.fn_getperson
go
create function dbo.fn_getperson
(
@entityid int
)
returns @result table (entityid int ,persontype varchar(10) ,firstname varchar(50) ,lastname varchar(50))
as
begin
insert into @result
(
entityid
,persontype
,firstname
,lastname
)
select businessentityid
,persontype
,firstname
,lastname
from person.person
where businessentityid = @entityid
return -- return must be last sql
end
go
print('dbo.fn_getperson has been created.')
-- select * from dbo.fn_getperson(1)
-- 3. inline function
use adventureworks2008
go
if exists (
select 1
from sys.objects
where [type] in (n'tf' ,n'if' ,n'fn')
and name = 'fn_getperson2'
)
drop function dbo.fn_getperson2
go
create function dbo.fn_getperson2
(
@entityid int
)
returns table
as
return
select businessentityid
,persontype
,firstname
,lastname
from person.person
where businessentityid = @entityid
go
print('dbo.fn_getperson2 has been created.')
-- select * from dbo.fn_getperson2(1)
-- 3. procedure
use adventureworks2008
go
if exists (
select 1
from sys.procedures
where name = 'usp_getperson'
)
drop procedure dbo.usp_getperson
go
create procedure dbo.usp_getperson
(
@entityid int
)
as
begin
--....... do some process
-- result of last query will return
select businessentityid
,persontype
,firstname
,lastname
from person.person
where businessentityid = @entityid
end
go
print('dbo.usp_getperson has been created.')
-- exec dbo.usp_getperson @entityid = 1
注：sql server 只返回最後一條查詢的結果集
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