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PostgreSQL - JOIN list + SQL Query

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Created by:
Wade
562

PostgreSQL - JOIN list + SQL Query

VisualisationSQL Query

INNER JOIN

SELECT *
FROM table_a A
JOIN table_b B ON A.key = B.key

LEFT OUTER JOIN

SELECT *
FROM table_a A
LEFT JOIN table_b B ON A.key = B.key

RIGHT OUTER JOIN

SELECT *       
FROM table_a A
RIGHT JOIN table_b B ON A.key = B.key

FULL OUTER JOIN

SELECT * FROM table_a A
FULL OUTER JOIN table_b B ON A.key = B.key

LEFT OUTER JOIN with exclusion

SELECT  *
FROM table_a A
LEFT JOIN table_b B ON A.key = B.key
WHERE B.key IS NULL

RIGHT OUTER JOIN with exclusion

SELECT *
FROM table_a A
RIGHT JOIN table_b B ON A.key = B.key
WHERE A.key IS NULL

FULL OUTER JOIN with exclusion

SELECT * FROM table_a A
FULL OUTER JOIN table_b B ON A.key = B.key
WHERE B.key IS NULL OR A.key IS NULL

Alternative titles

  1. PostgreSQL - difference between inner / outer joins
  2. PostgreSQL - inner / outer joins explanation
  3. PostgreSQL - INNER JOIN
  4. PostgreSQL - LEFT OUTER JOIN
  5. PostgreSQL - RIGHT OUTER JOIN
  6. PostgreSQL - FULL OUTER JOIN
  7. PostgreSQL - LEFT OUTER JOIN with exclusion
  8. PostgreSQL - RIGHT OUTER JOIN with exclusion
  9. PostgreSQL - RIGHT OUTER JOIN with exclusion
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