Enum ParameterStyle 

pub enum ParameterStyle {
    QuestionMark,
    DollarNumbered,
    Named,
}

Parameter style for SQL queries.

This determines how parameters are referenced in the SQL query string.

Variants

QuestionMark

Use question marks: SELECT * FROM users WHERE id = ?

DollarNumbered

Use dollar-numbered placeholders: SELECT * FROM users WHERE id = $1

Named

Use named parameters with colon: SELECT * FROM users WHERE id = :id

Trait Implementations

impl Clone for ParameterStyle

fn clone(&self) -> ParameterStyle

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ParameterStyle

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

Formats the value using the given formatter.

impl Default for ParameterStyle

fn default() -> ParameterStyle

Returns the “default value” for a type.

impl From<ParameterStyle> for i32

fn from(style: ParameterStyle) -> Self

Converts to this type from the input type.

impl PartialEq for ParameterStyle

fn eq(&self, other: &ParameterStyle) -> 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 Copy for ParameterStyle

impl Eq for ParameterStyle

impl StructuralPartialEq for ParameterStyle