CTE: Get all parents and all children in one statement

I have this working CTE example.

I can select all grand-parents and all children.

But how can I select all grand-parents and all children in one statement?

In this example I want Grandfather, Father, Son as output if I give "Father" as input.

I use PostgreSQL. But I think this question should be standard SQL.

Please correct me if I use PostgreSQL specific syntax.

DROP table if exists tree;CREATE TABLE tree ( id SERIAL PRIMARY KEY, name character varying(64) NOT NULL, parent_id integer REFERENCES tree NULL);insert into tree values (1, 'Grandfather', NULL);insert into tree values (2, 'Father', 1);insert into tree values (3, 'Son', 2);-- --------------------------------------- Getting all children works  WITH RECURSIVE rec (id) as(  SELECT tree.id, tree.name from tree where name='Father'  UNION ALL  SELECT tree.id, tree.name from rec, tree where tree.parent_id = rec.id  )SELECT *FROM rec;-- Result: --  id |  name  -- ----+----------   2 | Father--   3 | Son-- --------------------------------------- Getting all parents worksWITH RECURSIVE rec (id) as(  SELECT tree.id, tree.name, tree.parent_id from tree where name='Father'  UNION ALL  SELECT tree.id, tree.name, tree.parent_id from rec, tree where tree.id = rec.parent_id  )SELECT id, nameFROM rec;-- Result-- id |    name     -- ----+---------------  2 | Father--  1 | Grandfather

Above is a simplified working example. The tree can be up to 100 level deep. There can be several level of ancestors above "Father" and several level of descendants below. I want all ancestors and all descendants.