Enum LengthStyle 

pub enum LengthStyle {
    Fixed,
    Byte,
    Short,
    Long,
    Chunked,
}

How the value that follows a TYPE_INFO announces its own length.

Variants

Fixed

The type byte implies the size and the value can never be NULL.

Byte

One length byte; zero means NULL.

Short

Two length bytes; 0xFFFF means NULL.

Long

A text pointer, then four length bytes. text, ntext and image.

Chunked

Partially length-prefixed: a total length then a run of chunks. This is how every (max) column arrives, and it is the only shape whose length may genuinely be unknown when the first byte is sent.

Trait Implementations

impl Clone for LengthStyle

fn clone(&self) -> LengthStyle

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for LengthStyle

impl Debug for LengthStyle

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for LengthStyle

impl PartialEq for LengthStyle

fn eq(&self, other: &LengthStyle) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for LengthStyle