Employee hierarchy
Design an employees table: an id, a name and a manager. The manager is a reference to another employee in the same table (the director has none). Columns: id — primary key; name — required; manager_id — references employees.
Díreach CREATE/ALTER/DROP — ní gá SELECT ina dhiaidh sin.
Logáil isteach chun stair na n-aighneachtaí a fheiceáil
Logáil isteachLogáil isteach chun an Meantóir IS a úsáid
Logáil isteachGan scéim tosaithe
Tosaíonn an tasc seo gan táblaí — cruthóidh tú iad le CREATE TABLE.