Function abs 

pub fn abs<'a, V, E>(
    expr: E,
) -> SQLExpr<'a, V, E::SQLType, E::Nullable, E::Aggregate, E::Sources>
where
    V: SQLParam + 'a,
    E: Expr<'a, V>,
    E::SQLType: Numeric,

Absolute value (ABS).

The argument must be numeric. The result keeps the argument’s SQL type, nullability and aggregate kind.

Examples

assert_eq!(abs(users.score).sql(), r#"ABS ("users"."score")"#);

Type safety

ABS of a text column does not compile:

let wrong = abs(users.name);