Function SQLDescribeColW
pub unsafe fn SQLDescribeColW(
hstmt: *mut c_void,
icol: u16,
szcolname: Option<&mut [u16]>,
pcchcolname: Option<*mut i16>,
pfsqltype: Option<*mut i16>,
pcbcoldef: Option<*mut u64>,
pibscale: Option<*mut i16>,
pfnullable: Option<*mut i16>,
) -> i16