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sql自定义百分比转换小数函数代码

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 2022-09-23 20:26:28 转载来源: 网络整理/侵权必删

复制代码代码如下:--CAST和CONVERT函数PercentageDECLARE@decdecimal(5,3),@varvarchar(10),@hundecimal(5,1)set@dec=0.025set@hun=@dec*100set@var=cast(@hunasvarchar(20))+'%'select@var---小数转化为百分数函数GetPercentageString---涂聚文GeovinDuifexists(select*fromdbo

复制代码 代码如下:

--CAST 和 CONVERT 函数 Percentage
DECLARE @dec decimal(5,3), @var varchar(10),@hun decimal(5,1)
set @dec=0.025
set @hun=@dec*100
set @var=cast(@hun as varchar(20))+'%'
select @var

---小数转化为百分数函数 GetPercentageString
---涂聚文 Geovin Du
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[GetPercentageString]') and xtype in (N'FN', N'IF', N'TF'))
drop function [dbo].[GetPercentageString]
GO
CREATE function GetPercentageString
(
@dec decimal(10,3)
)
returns varchar(20)
AS
BEGIN
DECLARE @var varchar(10),@hun decimal(10,1)
SET @hun=@dec*100
SET @var=cast(@hun as varchar(20))+'%'
RETURN @var
END
GO
--测试数据 涂聚文 Geovin Du
SELECT [dbo].[GetPercentageString] (0.05)
SELECT [dbo].[GetPercentageString] (0.25)
SELECT [dbo].[GetPercentageString] (1.25)

--1. 查询字符串中是否包含非数字字符
SELECT PATINDEX('%[^0-9]%', '1235X461')
SELECT PATINDEX('%[^0-9]%', '12350461')
--2. 查询字符串中是否包含数字字符
SELECT PATINDEX('%[0-9]%', 'SUYLLGoO')
SELECT PATINDEX('%[0-9]%', 'SUYLLG0O')


DECLARE @dec decimal(10,4), @var varchar(10),@hun decimal(10,4),@I INT,@K INT,@S VARCHAR(20)
SET @var='5.23%'
--SELECT @K=LEN(@var)
--SELECT @S=LEFT(@var,@K-1)
SELECT @S=RIGHT(@var,1)
--SELECT @S
SELECT @I=CHARINDEX('%',@S)
IF @I>0
BEGIN
SET @var=REPLACE(@var,'%','')
SET @hun=CAST(@var AS decimal(10,4))
SET @dec=@hun/100
SELECT @dec
END
ELSE
BEGIN
SELECT @dec=NULL --'无效数据'
END


--百分数转化为小数函数 GetPercentageNumber
---涂聚文 Geovin Du
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[GetPercentageNumber]') and xtype in (N'FN', N'IF', N'TF'))
drop function [dbo].[GetPercentageNumber]
GO
CREATE function GetPercentageNumber
(
@var varchar(10)
)
returns decimal(10,4)
AS
BEGIN
DECLARE @dec decimal(10,4), @hun decimal(10,4),@I INT,@K INT,@S VARCHAR(20)
SELECT @S=RIGHT(@var,1)
--SELECT @S
SELECT @I=CHARINDEX('%',@S)
IF @I>0
BEGIN
SET @var=REPLACE(@var,'%','')
SET @hun=CAST(@var AS decimal(10,4))
SET @dec=@hun/100
--SELECT @dec
END
ELSE
BEGIN
SELECT @dec=NULL --'无效数据'
END
RETURN @dec
END
GO
--测试数据 涂聚文 Geovin Du
SELECT [dbo].[GetPercentageNumber] ('5.23%')
SELECT [dbo].[GetPercentageNumber] ('%0.23')

标签: sql 自定义 百分比 转换 小数 函数 代码


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上一篇: SQL超时解决方案有时并不是设置问题
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