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difference between left join and left outer join in postgresql

Awgiedawgie 
-- LEFT OUTER JOIN is equivalent to LEFT JOIN
-- b.VALUE1 is null when ID not in table2 (idem for c.VALUE1 in table3)
SELECT a.ID, a.NAME, b.VALUE1, c.VALUE1 FROM table1 a 
  LEFT OUTER JOIN table2 b ON a.ID = b.ID
  LEFT OUTER JOIN table3 c ON a.ID = c.ID
WHERE a.ID >= 1000;
-- ⇓ Test it ⇓ (Fiddle source link)
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