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CREATE FUNCTION dbo.f_hex_dec(@s varchar(16))
RETURNS bigint
AS
BEGIN
DECLARE @i int,@result bigint
SELECT @i=0,@result=0,@s=RTRIM(LTRIM(UPPER(REVERSE(@s))))
WHILE @i<LEN(@s)
BEGIN
IF SUBSTRING(@s,@i+1,1) not between '0' and '9' and SUBSTRING(@s,@i+1,1) not between 'A' and 'F'
BEGIN
SELECT @result=0
break
END
SELECT @result=@result+(CHARINDEX(SUBSTRING(@s,@i+1,1),'0123456789ABCDEF')-1)*cast(POWER(16,@i) as bigint),@i=@i+1
END
RETURN @result
END
GO
select dbo.f_hex_dec('B24147FE')
go
drop function f_hex_dec
/*
--------------------
2990622718
(所影响的行数为 1 行)
*/
--十进制转为十六进制
DECLARE
@binary varbinary(255),
@str_return varchar(255)
SELECT
@binary = CONVERT(varbinary(255),29327795562177529)
EXEC master.dbo.xp_varbintohexstr @binary, @str_return OUTPUT
SELECT
结果 = reverse(@str_return)
/*
结果
__________________________
008613974878369F10000011x0
*/
--十六进制转为十进制
CREATE FUNCTION dbo.f_hex_dec(@s varchar(16))
RETURNS bigint
AS
BEGIN
--作者:pbsql
--参数不得含'0'~'9'、'a'~'f'、'A'~'F'之外的任意字符(首尾空格除外),否则返回0
DECLARE @i int,@result bigint
SELECT @i=0,@result=0,@s=RTRIM(LTRIM(UPPER(REVERSE(@s))))
WHILE @i<LEN(@s)
BEGIN
IF SUBSTRING(@s,@i+1,1) not between '0' and '9' and SUBSTRING(@s,@i+1,1) not between 'A' and 'F'
BEGIN
SELECT @result=0
break
END
SELECT @result=@result+(CHARINDEX(SUBSTRING(@s,@i+1,1),'0123456789ABCDEF')-1)*POWER(16,@i),@i=@i+1
END
RETURN @result
END
GO