BIT_XOR function [Aggregate]

Takes n bit arrays and returns a bitwise exclusive OR-ing of its arguments using the following logic: for each bit compared, if there are an odd number of arguments with set bits (odd parity), return 1; otherwise, return 0.

Syntax

BIT_XOR( bit-expression )

Parameters

bit-expression The expression for which the value is to be determined. This is commonly a column name.

Returns

LONG VARBIT

Standards and compatibility

SQL/2003 Vendor extension.

Example

The following example generates four rows containing a CHAR column, then converts the values to VARBIT.

SELECT BIT_XOR( CAST(row_value AS VARBIT) ) 
FROM dbo.sa_split_list('0001,0111,0100,0011')

The result 0001 is determined as follows:

A bitwise exclusive OR (XOR) is performed between row 1 (0001) and row 2 (0111), resulting in 0110.
A bitwise XOR is performed between the result from the previous comparison (0110) and row 3 (0100), resulting in 0010.
A bitwise XOR is performed between the result from the previous comparison (0010) and row 4 (0011), resulting in 0001.