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XLeratorDB/engineering Online Documentation

SQL Server DEC2BIN function


 
Updated: 27 August 2010
 
Use DEC2BIN to convert a decimal number to binary.
Syntax
SELECT [wctEngineering].[wct].[DEC2BIN] (
   <@Number, float,>
 ,<@Places, float,>)
Arguments
@Number
is the decimal integer you want to convert. If @Number is negative, valid @Places values are ignored and DEC2BIN returns a 10-character (10-bit) binary number in which the most significant bit is the sign bit. The remaining 9 bits are magnitude bits. Negative numbers are represented using two's-complement notation. @Number is an expression of type float or of a type that can be implicitly converted to float
@Places
The number of characters to use. If @Places is NULL, DEC2BIN uses the minimum number of characters necessary. @Places is useful for padding the return value with leading 0s (zeros). @Places is an expression of type float or of a type that can be implicitly converted to float
Return Types
varchar(4000)
Remarks
·         If @Number is less than -512 or @Number is greater than 511, DEC2BIN returns an error.
·         If @Number is negative, DEC2BIN ignores places and returns a 10-character binary number.
·         @Places is truncated to zero decimal places.
Examples

select
wct.DEC2BIN(-512, NULL)

This produces the following result
-------------------------------
1000000000
 

(1 row(s) affected)

 

 

 


select
wct.DEC2BIN(511, NULL)

This produces the following result

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

111111111

 

(1 row(s) affected)


select
wct.DEC2BIN(11, 10)


This produces the following result

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

000001011

 

(1 row(s) affected)

 


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