Method spans

datafusion/expr/src/expr.rs:2260–2265

Returns a reference to the set of locations in the SQL query where this expression appears, if known. [`None`] is returned if the expression type doesn't support tracking locations yet.

(&self)

    /// expression appears, if known. [`None`] is returned if the expression
    /// type doesn't support tracking locations yet.
    pub fn spans(&self) -> Option<&Spans> {
        match self {
            Expr::Column(col) => Some(&col.spans),
            _ => None,
        }
    }

    /// Check if the Expr is literal and get the literal value if it is.
    pub fn as_literal(&self) -> Option<&ScalarValue> {