十进制整型转二进制字符串(锁定字符串长的最小值)

set ANSI_NULLS ON
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set QUOTED_IDENTIFIER ON
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go
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-- =============================================
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-- Author: HuntFox
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-- Create date: 2005.11.23
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-- Description: 十进制整型转二进制字符串(锁定字符串长的最小值)
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-- =============================================
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ALTER FUNCTION [dbo].[ToBinarySystemString]
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(
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@DecimalSystemInt int,
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@BinarySystemStringLen int
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)
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RETURNS NVARCHAR(31)
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AS
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BEGIN
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-- Declare the return variable here
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declare @ResultVar varchar(31)
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set @ResultVar=\'\'
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while (@DecimalSystemInt<>0)
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begin
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set @ResultVar=@ResultVar+convert(char(1),@DecimalSystemInt%2)
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set @DecimalSystemInt=@DecimalSystemInt/2
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end
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set @ResultVar=REVERSE (@ResultVar)
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while (Len(@ResultVar)<@BinarySystemStringLen)
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begin
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set @ResultVar=\'0\'+@ResultVar
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end
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RETURN @ResultVar
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END
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