Enum Value

pub enum Value<'c> {
    Varchar(&'c str),
    Bool(bool),
    Tinyint(i8),
    UnsignedTinyint(u8),
    Smallint(i16),
    UnsignedSmallint(u16),
    Int(i32),
    UnsignedInt(u32),
    Bigint(i64),
    UnsignedBigint(u64),
}

Enum representing common SQL-datatypes

Variants

Varchar(&'c str)

Bool(bool)

Tinyint(i8)

UnsignedTinyint(u8)

Smallint(i16)

UnsignedSmallint(u16)

Int(i32)

UnsignedInt(u32)

Bigint(i64)

UnsignedBigint(u64)

Implementations

impl<'c> Value<'c>

pub fn as_string(&self) -> String

Convert the Value to a String

Example

use query_builder::Value;
 
// Put single quotes around the varchar to not conflict with e.g. MySQL when inserting data
let v = Value::Varchar("steven");
assert_eq!(v.as_string(), "'steven'");

// Bools are written in caps to make them stand out in queries
let v = Value::Bool(true);
assert_eq!(v.as_string(), "TRUE");

// applies to all numeric Values
let v = Value::Int(42);
assert_eq!(v.as_string(), "42");

Trait Implementations

impl<'c> Clone for Value<'c>

fn clone(&self) -> Value<'c>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'c> Debug for Value<'c>

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

Formats the value using the given formatter.

impl<'c> Display for Value<'c>

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

Formats the value using the given formatter.

impl<'c> Ord for Value<'c>

fn cmp(&self, other: &Value<'c>) -> 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<'c> PartialEq for Value<'c>

fn eq(&self, other: &Value<'c>) -> 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<'c> PartialOrd for Value<'c>

fn partial_cmp(&self, other: &Value<'c>) -> 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<'c> Eq for Value<'c>

impl<'c> StructuralPartialEq for Value<'c>