Struct Column 

pub struct Column<T> {
    pub name: &'static str,
    pub aliased_name: &'static str,
    pub table_alias: &'static str,
    pub _marker: PhantomData<T>,
}

Represents a database column in a type-safe way.

Column<T> is a lightweight wrapper around a column name (&'static str) with a phantom type parameter T that indicates the type of values that can be bound to conditions involving this column.

This allows you to write type-safe query conditions such as:

use sqlorm_core::qb::{Column, Condition};
use std::marker::PhantomData;

static ID: Column<i32> = Column { name: "id", table_alias: "user__", _marker: PhantomData };
let cond: Condition = ID.eq(42);
assert_eq!(cond.sql, "user__.id = ?");

Fields

name: &'static str

The column name as it appears in SQL.

aliased_name: &'static str

The column name with table alias, as it appears in SQL. example: __user.id

table_alias: &'static str

The table alias to use when generating SQL conditions.

_marker: PhantomData<T>

Marker to carry the type information for the column.

Implementations

impl<T> Column<T>

where T: BindValue + Clone,

pub fn eq(self, val: T) -> Condition

Create a condition: column = ?

pub fn ne(self, val: T) -> Condition

Create a condition: column <> ?

pub fn gt(self, val: T) -> Condition

Create a condition: column > ?

pub fn ge(self, val: T) -> Condition

Create a condition: column >= ?

pub fn lt(self, val: T) -> Condition

Create a condition: column < ?

pub fn le(self, val: T) -> Condition

Create a condition: column <= ?

pub fn like(self, val: T) -> Condition

Create a condition: column LIKE ?

pub fn in_(self, vals: Vec<T>) -> Condition

Create a condition: column IN (?, ?, ...)

The number of placeholders matches the number of values provided.

Panics if vals is empty

pub fn not_in(self, vals: Vec<T>) -> Condition

Create a condition: column NOT IN (?, ?, ...)

Panics if vals is empty

pub fn is_null(self) -> Condition

Create a condition: column IS NULL

pub fn is_not_null(self) -> Condition

Create a condition: column IS NOT NULL

pub fn between(self, start: T, end: T) -> Condition

Create a condition: column BETWEEN ? AND ?

pub fn not_between(self, start: T, end: T) -> Condition

Create a condition: column NOT BETWEEN ? AND ?

Trait Implementations

impl<T> AsRef<str> for Column<T>

fn as_ref(&self) -> &str

Converts this type into a shared reference of the (usually inferred) input type.

impl<T> Clone for Column<T>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T: Debug> Debug for Column<T>

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

Formats the value using the given formatter.

impl<T> Copy for Column<T>