go
--建立函式(csdn fredrickhu(小f)提供)
create
function udf_getstar (@ datetime
)returns
varchar
(100)
-- 返回日期所屬星座
begin
return
(select
max(star)
from
(select
'魔羯座'
as star,1 as [month],1 as [day]
union
allselect
'水瓶座'
,1,20
union
allselect
'雙魚座'
,2,19
union
allselect
'牡羊座'
,3,21
union
allselect
'金牛座'
,4,20
union
allselect
'雙子座'
,5,21
union
allselect
'巨蟹座'
,6,22
union
allselect
'獅子座'
,7,23
union
allselect
'**座'
,8,23
union
allselect
'天秤座'
,9,23
union
allselect
'天蠍座'
,10,24
union
allselect
'射手座'
,11,22
union
allselect
'魔羯座'
,12,22
) stars
where
dateadd
(month
,[month] - 1,
dateadd
(year
,year
(@) -
year
(0),0))
+ [day] - 1 =
(select
max(
dateadd
(month
,[month] - 1,
dateadd
(year
,year
(@) -
year
(0),0))
+ [day] - 1)
from
(select
'魔羯座'
as star,1 as [month],1 as [day]
union
allselect
'水瓶座'
,1,20
union
allselect
'雙魚座'
,2,19
union
allselect
'牡羊座'
,3,21
union
allselect
'金牛座'
,4,20
union
allselect
'雙子座'
,5,21
union
allselect
'巨蟹座'
,6,22
union
allselect
'獅子座'
,7,23
union
allselect
'**座'
,8,23
union
allselect
'天秤座'
,9,23
union
allselect
'天蠍座'
,10,24
union
allselect
'射手座'
,11,22
union
allselect
'魔羯座'
,12,22
) stars
where @ >=
dateadd
(month
,[month] - 1,
dateadd
(year
,year
(@) -
year
(0),0))
+ [day] - 1 )
)end
--測試示例
select
dbo.udf_getstar(
'2010-05-04'
)select
dbo.udf_getstar(
'2009-01-04'
)select
dbo.udf_getstar(
'2007-12-04')
--執行結果 /*
金牛座魔羯座
射手座 */
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