Function set_bit 

pub fn set_bit(
    bytes: &[u8],
    n: i64,
    value: i32,
    writer: &mut impl Write,
) -> Result<()>

Sets n’th bit in binary string to newvalue.

Example

query T
SELECT set_bit('\x1234567890'::bytea, 30, 0);
----
\x1234563890