Method plan_bool_or

src/sql/src/plan/transform_ast.rs:345–374

(
        &mut self,
        expr: Expr<Aug>,
        filter: Option<Box<Expr<Aug>>>,
        distinct: bool,
        over: Option<WindowSpec<Aug>>,
    )

    }

    fn plan_bool_or(
        &mut self,
        expr: Expr<Aug>,
        filter: Option<Box<Expr<Aug>>>,
        distinct: bool,
        over: Option<WindowSpec<Aug>>,
    ) -> Expr<Aug> {
        // The code below converts `bool_or(x)`z into:
        //
        //     sum((x OR false)::int4) > 0
        //
        // It is tempting to use `count` instead, but count does not return NULL
        // when all input values are NULL, as required.
        //
        // The `(x OR false)` expression implicitly casts `x` to `bool` without
        // changing its logical value. It is tempting to use `x::bool` instead,
        // but that performs an explicit cast, and to match PostgreSQL we must
        // perform only an implicit cast.
        let sum = self.plan_agg(
            self.scx
                .dangerous_resolve_name(vec![PG_CATALOG_SCHEMA, "sum"]),
            expr.or(Expr::Value(Value::Boolean(false)))
                .cast(self.int32_data_type()),
            vec![],
            filter,
            distinct,
            over,
        );
        sum.gt(Expr::Value(Value::Number(0.to_string())))
    }

    fn rewrite_function(&mut self, func: &Function<Aug>) -> Option<(Ident, Expr<Aug>)> {
        if let Function {