Function length 

pub fn length<'a, V, E>(
    expr: E,
) -> SQLExpr<'a, V, <E::SQLType as LengthPolicy<V::DialectMarker>>::Output, E::Nullable, E::Aggregate>
where
    V: SQLParam + 'a,
    E: Expr<'a, V>,
    E::SQLType: LengthPolicy<V::DialectMarker>,

LENGTH - returns the length of a string.

Returns a dialect-aware integer type, preserves nullability.

Example

use drizzle_core::expr::length;

// SELECT LENGTH(users.name)
let name_len = length(users.name);