Trait IntoExpr 

pub trait IntoExpr {
    // Required method
    fn into_expr(self) -> Expr;
}

Conversion trait for types that can be turned into an Expr.

This trait is implemented for:

• Expr – returned as-is.
• &str and String – converted to a column reference via col().
• Expression – wrapped directly in an Expr.

Note: &str/String inputs are treated as identifiers, not SQL string literals. Use lit() for literal values.

It is used as a generic bound throughout the builder API so that functions like select(), SelectBuilder::order_by(), and SelectBuilder::group_by() can accept plain strings, Expr values, or raw Expression nodes interchangeably.

Required Methods

fn into_expr(self) -> Expr

Convert this value into an Expr.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl IntoExpr for &str

fn into_expr(self) -> Expr

Convert a string slice to a column reference via col().

impl IntoExpr for String

fn into_expr(self) -> Expr

Convert an owned string to a column reference via col().

Implementors

impl IntoExpr for Expression

impl IntoExpr for Expr