Visual Learning of MySQL Joins
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Image Description: Inner Join - MySQL Join
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Image Source: V2
A simple way for don't forget MySQL Joins.
This learn contains:
- MINUS RIGHT JOIN or LEFT EXCLUDE JOIN
- OUTER EXCLUDE JOIN
- MINUS LEFT JOIN or RIGHT EXCLUDE JOIN
- INNER JOIN
- LEFT JOIN
- RIGHT JOIN
- OUTER JOIN
MINUS RIGHT JOIN or LEFT EXCLUDE JOIN
SELECT * FROM A LEFT JOIN B ON A.ID = B.ID WHERE B.ID IS NULLOUTER EXCLUDE JOIN
SELECT * FROM A LEFT JOIN B ON A.ID = B.ID
WHERE B.ID IS NULL
UNION ALL
SELECT * FROM A RIGHT JOIN B ON A.ID = B.ID
WHERE A.ID IS NULLMINUS LEFT JOIN or RIGHT EXCLUDE JOIN
SELECT * FROM A LEFT JOIN B ON A.ID = B.ID WHERE B.ID IS NULLINNER JOIN
SELECT * FROM A INNER JOIN B ON A.ID = B.IDLEFT JOIN
SELECT * FROM A LEFT JOIN B ON A.ID = B.IDRIGHT JOIN
SELECT * FROM A RIGHT JOIN B ON A.ID = B.IDOUTER JOIN
SELECT * FROM A LEFT JOIN B ON A.ID = B.ID
UNION ALL
SELECT * FROM A RIGHT JOIN B ON A.ID = B.ID
WHERE A.ID IS NULL