BIT( ) function

Returns the binary representation for the specified byte position in the current record.





Numeric. The byte position in the current record to use as the input value.


Character. Returns the binary value as an eight character string.


The BIT( ) function converts the byte at the specified byte position into an eight character string of ones and zeros. You can use the BIT( ) function if you need to examine the individual bits in a byte.

If you want to retrieve the character at the specified byte location, use the BYTE( ) function.


To assign the bit values for bytes 8, 9, and 17 to the variables b8, b9, and b17, specify:

b8 = BIT(8)
b9 = BIT(9)
b17 = BIT(17)

You will find:

Assume that byte position 17 contains a set of 8 credit flags. To extract all customer records that have the third bit set to one (meaning “do not ship”), specify:

SUBSTRING(BIT(17), 3, 1) = "1"

In this example, the SUBSTRING( ) function is used to extract the value of the third bit.

Related reference
BYTE( ) function
SUBSTR( ) function

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