Enum SqlParameter 

pub enum SqlParameter {
    PostgresIndexed(SqlParameterIndex),
    PositionalQuestionMark,
    NamedColon(SqlParameterName),
    NamedAtSign(SqlParameterName),
}

SQL parameter placeholders.

Variants

PostgresIndexed(SqlParameterIndex)

PositionalQuestionMark

NamedColon(SqlParameterName)

NamedAtSign(SqlParameterName)

Implementations

impl SqlParameter

pub const fn postgres_indexed(index: u32) -> Result<Self, SqlParameterError>

Creates a PostgreSQL-style indexed parameter such as $1.

Errors

Returns SqlParameterError::ZeroIndex when index is zero.

pub const fn positional() -> Self

Creates a positional question-mark parameter.

pub fn named_colon(name: impl AsRef<str>) -> Result<Self, SqlParameterError>

Creates a colon-prefixed named parameter.

Errors

Returns SqlParameterError when name validation fails.

pub fn named_at(name: impl AsRef<str>) -> Result<Self, SqlParameterError>

Creates an at-sign-prefixed named parameter.

Errors

Returns SqlParameterError when name validation fails.

pub const fn style(&self) -> SqlParameterStyle

Returns the placeholder style.

Trait Implementations

impl Clone for SqlParameter

fn clone(&self) -> SqlParameter

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SqlParameter

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

Formats the value using the given formatter.

impl Display for SqlParameter

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

Formats the value using the given formatter.

impl FromStr for SqlParameter

type Err = SqlParameterError

The associated error which can be returned from parsing.

fn from_str(input: &str) -> Result<Self, Self::Err>

Parses a string s to return a value of this type.

impl Hash for SqlParameter

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for SqlParameter

fn cmp(&self, other: &SqlParameter) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for SqlParameter

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for SqlParameter

fn partial_cmp(&self, other: &SqlParameter) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl TryFrom<&str> for SqlParameter

type Error = SqlParameterError

The type returned in the event of a conversion error.

fn try_from(value: &str) -> Result<Self, Self::Error>

Performs the conversion.

impl Eq for SqlParameter

impl StructuralPartialEq for SqlParameter