完善SQL农历转换函数

SQL code
--------------------------------------------------------------------------

-- Author : 原著： 改编：htl258(Tony)

-- Date : 2010-04-24 06:39:55

-- Version:Microsoft SQL Server 2008 (RTM) - 10.0.1600.22 (Intel X86)

-- Jul 9 2008 14:43:34

-- Copyright (c) 1988-2008 Microsoft Corporation

-- Developer Edition on Windows NT 5.1 (Build 2600: Service Pack 3)

-- Blog : http://blog.csdn.net/htl258

-- Subject: 完善SQL农历转换函数（显示中文格式，加入润月的显示）

--------------------------------------------------------------------------

--注：由于一时找不到原著作者，所以暂未填入。大家有知道的告知一下，谢谢！

--参考此地址的代码：http://dev.csdn.net/article/26/26487.shtm

--创建基础数据表

if object_id('SolarData') is not null
    drop table SolarData
go
create table SolarData
(
  yearid int not null,
  data char(7) not null,
  dataint int not null
)
--插入数据

insert into
SolarData select 1900,'0x04bd8',19416 union all select 1901,'0x04ae0',19168
union all select 1902,'0x0a570',42352 union all select 1903,'0x054d5',21717
union all select 1904,'0x0d260',53856 union all select 1905,'0x0d950',55632
union all select 1906,'0x16554',91476 union all select 1907,'0x056a0',22176
union all select 1908,'0x09ad0',39632 union all select 1909,'0x055d2',21970
union all select 1910,'0x04ae0',19168 union all select 1911,'0x0a5b6',42422
union all select 1912,'0x0a4d0',42192 union all select 1913,'0x0d250',53840
union all select 1914,'0x1d255',119381 union all select 1915,'0x0b540',46400
union all select 1916,'0x0d6a0',54944 union all select 1917,'0x0ada2',44450
union all select 1918,'0x095b0',38320 union all select 1919,'0x14977',84343
union all select 1920,'0x04970',18800 union all select 1921,'0x0a4b0',42160
union all select 1922,'0x0b4b5',46261 union all select 1923,'0x06a50',27216
union all select 1924,'0x06d40',27968 union all select 1925,'0x1ab54',109396
union all select 1926,'0x02b60',11104 union all select 1927,'0x09570',38256
union all select 1928,'0x052f2',21234 union all select 1929,'0x04970',18800
union all select 1930,'0x06566',25958 union all select 1931,'0x0d4a0',54432
union all select 1932,'0x0ea50',59984 union all select 1933,'0x06e95',28309
union all select 1934,'0x05ad0',23248 union all select 1935,'0x02b60',11104
union all select 1936,'0x186e3',100067 union all select 1937,'0x092e0',37600
union all select 1938,'0x1c8d7',116951 union all select 1939,'0x0c950',51536
union all select 1940,'0x0d4a0',54432 union all select 1941,'0x1d8a6',120998
union all select 1942,'0x0b550',46416 union all select 1943,'0x056a0',22176
union all select 1944,'0x1a5b4',107956 union all select 1945,'0x025d0',9680
union all select 1946,'0x092d0',37584 union all select 1947,'0x0d2b2',53938
union all select 1948,'0x0a950',43344 union all select 1949,'0x0b557',46423
union all select 1950,'0x06ca0',27808 union all select 1951,'0x0b550',46416
union all select 1952,'0x15355',86869 union all select 1953,'0x04da0',19872
union all select 1954,'0x0a5d0',42448 union all select 1955,'0x14573',83315
union all select 1956,'0x052d0',21200 union all select 1957,'0x0a9a8',43432
union all select 1958,'0x0e950',59728 union all select 1959,'0x06aa0',27296
union all select 1960,'0x0aea6',44710 union all select 1961,'0x0ab50',43856
union all select 1962,'0x04b60',19296 union all select 1963,'0x0aae4',43748
union all select 1964,'0x0a570',42352 union all select 1965,'0x05260',21088
union all select 1966,'0x0f263',62051 union all select 1967,'0x0d950',55632
union all select 1968,'0x05b57',23383 union all select 1969,'0x056a0',22176
union all select 1970,'0x096d0',38608 union all select 1971,'0x04dd5',19925
union all select 1972,'0x04ad0',19152 union all select 1973,'0x0a4d0',42192
union all select 1974,'0x0d4d4',54484 union all select 1975,'0x0d250',53840
union all select 1976,'0x0d558',54616 union all select 1977,'0x0b540',46400
union all select 1978,'0x0b5a0',46496 union all select 1979,'0x195a6',103846
union all select 1980,'0x095b0',38320 union all select 1981,'0x049b0',18864
union all select 1982,'0x0a974',43380 union all select 1983,'0x0a4b0',42160
union all select 1984,'0x0b27a',45690 union all select 1985,'0x06a50',27216
union all select 1986,'0x06d40',27968 union all select 1987,'0x0af46',44870
union all select 1988,'0x0ab60',43872 union all select 1989,'0x09570',38256
union all select 1990,'0x04af5',19189 union all select 1991,'0x04970',18800
union all select 1992,'0x064b0',25776 union all select 1993,'0x074a3',29859
union all select 1994,'0x0ea50',59984 union all select 1995,'0x06b58',27480
union all select 1996,'0x055c0',21952 union all select 1997,'0x0ab60',43872
union all select 1998,'0x096d5',38613 union all select 1999,'0x092e0',37600
union all select 2000,'0x0c960',51552 union all select 2001,'0x0d954',55636
union all select 2002,'0x0d4a0',54432 union all select 2003,'0x0da50',55888
union all select 2004,'0x07552',30034 union all select 2005,'0x056a0',22176
union all select 2006,'0x0abb7',43959 union all select 2007,'0x025d0',9680
union all select 2008,'0x092d0',37584 union all select 2009,'0x0cab5',51893
union all select 2010,'0x0a950',43344 union all select 2011,'0x0b4a0',46240
union all select 2012,'0x0baa4',47780 union all select 2013,'0x0ad50',44368
union all select 2014,'0x055d9',21977 union all select 2015,'0x04ba0',19360
union all select 2016,'0x0a5b0',42416 union all select 2017,'0x15176',86390
union all select 2018,'0x052b0',21168 union all select 2019,'0x0a930',43312
union all select 2020,'0x07954',31060 union all select 2021,'0x06aa0',27296
union all select 2022,'0x0ad50',44368 union all select 2023,'0x05b52',23378
union all select 2024,'0x04b60',19296 union all select 2025,'0x0a6e6',42726
union all select 2026,'0x0a4e0',42208 union all select 2027,'0x0d260',53856
union all select 2028,'0x0ea65',60005 union all select 2029,'0x0d530',54576
union all select 2030,'0x05aa0',23200 union all select 2031,'0x076a3',30371
union all select 2032,'0x096d0',38608 union all select 2033,'0x04bd7',19415
union all select 2034,'0x04ad0',19152 union all select 2035,'0x0a4d0',42192
union all select 2036,'0x1d0b6',118966 union all select 2037,'0x0d250',53840
union all select 2038,'0x0d520',54560 union all select 2039,'0x0dd45',56645
union all select 2040,'0x0b5a0',46496 union all select 2041,'0x056d0',22224
union all select 2042,'0x055b2',21938 union all select 2043,'0x049b0',18864
union all select 2044,'0x0a577',42359 union all select 2045,'0x0a4b0',42160
union all select 2046,'0x0aa50',43600 union all select 2047,'0x1b255',111189
union all select 2048,'0x06d20',27936 union all select 2049,'0x0ada0',44448
GO

SQL code
--创建农历日期函数

if object_id('fn_GetLunar') is not null
    drop function fn_GetLunar
go
create function dbo.fn_GetLunar(@solarday datetime)
returns nvarchar(30)
as
begin
  declare @soldata int
  declare @offset int
  declare @ilunar int
  declare @i int
  declare @j int
  declare @ydays int
  declare @mdays int
  declare @mleap int
  declare @mleap1 int
  declare @mleapnum int
  declare @bleap smallint
  declare @temp int
  declare @year nvarchar(10)
  declare @month nvarchar(10)
  declare @day nvarchar(10)
  declare @chinesenum nvarchar(10)
  declare @outputdate nvarchar(30)
  set @offset=datediff(day,'1900-01-30',@solarday)
  --确定农历年开始

  set @i=1900
  --set @offset=@soldata

  while @i<2050 and @offset>0
  begin
    set @ydays=348
    set @mleapnum=0
    select @ilunar=dataint from solardata where yearid=@i
     
    --传回农历年的总天数

    set @j=32768
    while @j>8
    begin
      if @ilunar & @j >0
        set @ydays=@ydays+1
      set @j=@j/2
    end
    --传回农历年闰哪个月 1-12 , 没闰传回 0

    set @mleap = @ilunar & 15
    --传回农历年闰月的天数 ,加在年的总天数上

    if @mleap > 0
    begin
      if @ilunar & 65536 > 0
        set @mleapnum=30
      else
        set @mleapnum=29
      set @ydays=@ydays+@mleapnum
    end
    set @offset=@offset-@ydays
    set @i=@i+1
  end
  if @offset <= 0
  begin
    set @offset=@offset+@ydays
    set @i=@i-1
  end
  --确定农历年结束

  set @year=@i
  --确定农历月开始

  set @i = 1
  select @ilunar=dataint from solardata where yearid=@year
  --判断那个月是润月

  set @mleap = @ilunar & 15
  set @bleap = 0
  while @i < 13 and @offset > 0
  begin
    --判断润月

    set @mdays=0
    if (@mleap > 0 and @i = (@mleap+1) and @bleap=0)
    begin--是润月

      set @i=@i-1
      set @bleap=1
      set @mleap1= @mleap
      --传回农历年闰月的天数

      if @ilunar & 65536 > 0
        set @mdays = 30
      else
        set @mdays = 29
    end
    else
    --不是润月

    begin
      set @j=1
      set @temp = 65536
      while @j<=@i
      begin
        set @temp=@temp/2
        set @j=@j+1
      end
     
      if @ilunar & @temp > 0
        set @mdays = 30
      else
        set @mdays = 29
    end
       
    --解除润月

    if @bleap=1 and @i= (@mleap+1)
      set @bleap=0
   
    set @offset=@offset-@mdays
    set @i=@i+1
  end
     
  if @offset <= 0
  begin
    set @offset=@offset+@mdays
    set @i=@i-1
  end
   
  --确定农历月结束

  set @month=@i
     
  --确定农历日结束

  set @day=ltrim(@offset)
  --输出日期

  set @chinesenum=N'〇一二三四五六七八九十'
  while len(@year)>0
  select @outputdate=isnull(@outputdate,'')
         + substring(@chinesenum,left(@year,1)+1,1)
         , @year=stuff(@year,1,1,'')
  set @outputdate=@outputdate+N'年'
         + case @mleap1 when @month then N'润' else '' end
  if cast(@month as int)<10
    set @outputdate=@outputdate
         + case @month when 1 then N'正'
             else substring(@chinesenum,left(@month,1)+1,1)
           end
  else if cast(@month as int)>=10
    set @outputdate=@outputdate
         + case @month when '10' then N'十' when 11 then N'十一'
           else N'十二' end
  set @outputdate=@outputdate + N'月'
  if cast(@day as int)<10
    set @outputdate=@outputdate + N'初'
         + substring(@chinesenum,left(@day,1)+1,1)
  else if @day between '10' and '19'
    set @outputdate=@outputdate
         + case @day when '10' then N'初十' else N'十'+
           substring(@chinesenum,right(@day,1)+1,1) end
  else if @day between '20' and '29'
    set @outputdate=@outputdate
         + case @day when '20' then N'二十' else N'廿' end
         + case @day when '20' then N'' else
           substring(@chinesenum,right(@day,1)+1,1) end
  else
    set @outputdate=@outputdate+N'三十'
  return @outputdate
end
GO

select dbo.fn_GetLunar(getdate()) as [改编日期(农历)],
    getdate() as [改编日期(公历)]
/*
改编日期(农历) 改编日期(公历)
------------------ -----------------------
二〇一〇年三月十一 2010-04-24 07:01:17.340

(1 行受影响)
*/

select convert(char(10),dateadd(d,number,'2008-1-1'),23) as 公历,
     dbo.fn_GetLunar(dateadd(d,number,'2008-1-1')) as 农历
from master..spt_values
where type='p'
/*
公历 农历
---------- ------------------------------
2008-01-01 二〇〇七年十一月廿三
2008-01-02 二〇〇七年十一月廿四
2008-01-03 二〇〇七年十一月廿五
2008-01-04 二〇〇七年十一月廿六
2008-01-05 二〇〇七年十一月廿七
2008-01-06 二〇〇七年十一月廿八
2008-01-07 二〇〇七年十一月廿九
2008-01-08 二〇〇七年十二月初一
2008-01-09 二〇〇七年十二月初二
2008-01-10 二〇〇七年十二月初三
...............
2013-07-31 二〇一三年六月廿四
2013-08-01 二〇一三年六月廿五
2013-08-02 二〇一三年六月廿六
2013-08-03 二〇一三年六月廿七
2013-08-04 二〇一三年六月廿八
2013-08-05 二〇一三年六月廿九
2013-08-06 二〇一三年六月三十
2013-08-07 二〇一三年七月初一
2013-08-08 二〇一三年七月初二
2013-08-09 二〇一三年七月初三

(2048 行受影响)
*/