Function is_not_null

datafusion/expr/src/expr_fn.rs:345–347

Create is not null expression

(expr: Expr)

/// Create is not null expression
pub fn is_not_null(expr: Expr) -> Expr {
    Expr::IsNotNull(Box::new(expr))
}

/// Create is true expression
pub fn is_true(expr: Expr) -> Expr {