Struct Col 

pub struct Col<M, T> { /* private fields */ }

One column of the model M, whose Rust type is T (for example Option<String>).

A misspelled column or a value of the wrong type is a compile error:

use renox::db::Col;

struct Product;
const PRICE: Col<Product, i64> = Col::new("price");

let cheap = PRICE.lt(20_000);

Implementations

impl<M, T> Col<M, T>

pub const fn new(name: &'static str) -> Self

A column named name.

pub const fn name(&self) -> &'static str

The column’s name.

impl<M, T> Col<M, T>

pub fn eq<V: ToDbValue>(self, value: V) -> Condition<M>

where T: Comparable<V>,

column = value.

pub fn ne<V: ToDbValue>(self, value: V) -> Condition<M>

where T: Comparable<V>,

column != value.

pub fn lt<V: ToDbValue>(self, value: V) -> Condition<M>

where T: Comparable<V>,

column < value.

pub fn lte<V: ToDbValue>(self, value: V) -> Condition<M>

where T: Comparable<V>,

column <= value.

pub fn gt<V: ToDbValue>(self, value: V) -> Condition<M>

where T: Comparable<V>,

column > value.

pub fn gte<V: ToDbValue>(self, value: V) -> Condition<M>

where T: Comparable<V>,

column >= value.

pub fn is_null(self) -> Condition<M>

column IS NULL.

pub fn is_not_null(self) -> Condition<M>

column IS NOT NULL.

pub fn is_in<V: ToDbValue>( self, values: impl IntoIterator<Item = V>, ) -> Condition<M>

where T: Comparable<V>,

column IN (…); an empty list matches no rows.

impl<M> Col<M, String>

pub fn like(self, pattern: &str) -> Condition<M>

column LIKE pattern, ignoring ASCII case on both databases.

impl<M> Col<M, Option<String>>

pub fn like(self, pattern: &str) -> Condition<M>

column LIKE pattern, ignoring ASCII case on both databases.

Trait Implementations

impl<M, T> Clone for Col<M, T>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<M, T> Copy for Col<M, T>

impl<M, T> Debug for Col<M, T>

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

Formats the value using the given formatter.

impl<M, T> IntoColumn<M> for Col<M, T>

fn column_name(&self) -> &str

The column’s name.