本篇内容介绍了“怎么用SQL生成一张带农历的日期维度表”的有关知识，在实际案例的操作过程中，不少人都会遇到这样的困境，接下来就让小编带领大家学习一下如何处理这些情况吧！希望大家仔细阅读，能够学有所成！
创新互联公司长期为上1000+客户提供的网站建设服务，团队从业经验10年，关注不同地域、不同群体，并针对不同对象提供差异化的产品和服务；打造开放共赢平台，与合作伙伴共同营造健康的互联网生态环境。为木垒哈萨克企业提供专业的成都做网站、成都网站制作、成都外贸网站建设，木垒哈萨克网站改版等技术服务。拥有10多年丰富建站经验和众多成功案例,为您定制开发。
创建农历表
CREATE TABLE SolarData ( yearId int not null primary key, data char(7) not null, dataInt int not null )
插入农历数据
农历数据包含从1900年到2049年的具体数据。
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
(提示：可以左右滑动代码)
计算具体农历
农历的计算有固定的规则，我们通过下面的算法计算出公历日期对应的农历。
注：以下算法来自网络
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
测试农历算法
我们创建的是一个农历的函数，当我们将日期传递给这个函数，其就会返回具体的日历了。
SELECT dbo.fn_GetLunar('2021-02-19') Lunar查看一下返回的结果：
我们去查了一下日历，验证结果是正确的
将农历加入到日历表
已经获得了公历转换成农历的转换函数，我们直接调用该函数即可。修改一下日历表结构(在表CALENDAR_INFO 中添加一个字符串格式的字段Lunar)和存储过程。更新后的存储过程如下：
CREATE PROC PROC_CALENDAR(@YEAR INT ) AS BEGIN DECLARE @i INT; DECLARE @START_DATE VARCHAR(20); DECLARE @END_DATE VARCHAR(20); DECLARE @DATE_COUNT INT; SET @i=0; --定义一年的开始日期，用CONCAT函数将年份和月份日期拼接起来 SET @START_DATE= CONCAT(@YEAR, '-01-01'); --定义一年的结束日期 SET @END_DATE = CONCAT(@YEAR+1,'-01-01'); --如果表已经存在要新建的日历，则先删除 DELETE FROM CALENDAR_INFO WHERE YEAR = @YEAR; --计算开始到结束日期一共有多少天，DATEDIFF函数计算日期的间隔天数 SET @DATE_COUNT = DATEDIFF(DAY,@START_DATE,@END_DATE); --建立循环，条件是@i小于一年的天数 WHILE @i < @DATE_COUNT BEGIN INSERT INTO CALENDAR_INFO (COUNTRY,CDR_CODE,DATE_NAME,LUNAR, YEAR,MONTH,WEEK,DAY,CDR_DATE,CREATOR,CREATE_DATE,CREATE_INST) SELECT 'CN', 'CN01', --CONVERT函数将@START_DATE转换成指定的格式 CONVERT(CHAR(10),@START_DATE,111) DATE_NAME, --将公历日期转换为农历 dbo.fn_GetLunar(CONVERT(datetime,@start_date,101)) LUNAR, --DATENAME获取@START_DATE的年份 CONVERT(CHAR(4),DATENAME(YEAR, @START_DATE)) YEAR, --DATENAME获取@START_DATE的月份 CONVERT(CHAR(2),DATENAME(MONTH, @START_DATE)) MONTH, --DATENAME获取@START_DATE的星期 CONVERT(CHAR(6),DATENAME(WEEKDAY, @START_DATE)) WEEK, --DATENAME获取@START_DATE的日期 CONVERT(CHAR(2),DATENAME(DAY, @START_DATE)) DAY, CONVERT(CHAR(10),@START_DATE,120) CDR_DATE, '平凡世界', GETDATE() CREATE_DATE, 'Lyven' --插入完成后，对@i进行自加1处理 SET @i=@i+1; --更新@START_DATE的值，在原来的基础上使用DATEADD函数增加一天 SET @START_DATE=CONVERT(CHAR(10),DATEADD(DAY, 1, @START_DATE),120); END END
执行存储过程
EXEC proc_calendar 2019
结果如下：
我们去查了一下日历，验证结果是正确的
日期维度表作用
可能有同学会问，花这么大力气就写了个这个，到底有什么用啊?
既然叫维度表，那肯定是跟维度有关了，有了这个维度表，我们可以通过多维数据集来查看不同日期维度的具体数据，特别是应用在可视化报表开发方面。
下面就是一个比较简单的Power BI报表，这里我们就使用到了日期维度表中的年月。
Power BI效果图
至此，一个包含农历的完整日期维度表就生成了，有兴趣的小伙伴可以用MySQL或Oracle进行改写一下。
“怎么用SQL生成一张带农历的日期维度表”的内容就介绍到这里了，感谢大家的阅读。如果想了解更多行业相关的知识可以关注创新互联网站，小编将为大家输出更多高质量的实用文章！
