Returns a count of the number of bits set to 1 (TRUE) in the array.

Syntax

COUNT_SET_BITS( bit-expression )

Parameters

The bit array for which to determine the set bits.

Remarks

Returns NULL if bit-expression is NULL.

Standards and compatibility

Example

The following statement returns the value 4:

SELECT COUNT_SET_BITS( '00110011' );

The following statement returns the value 12:

SELECT COUNT_SET_BITS( '0011001111111111' );