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Data Manipulation using SQL

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SQL Full Outer Join

Let's explore FULL OUTER JOIN: it does joining for a union of records of table1 and table2:

All uncompleted fields got the value NULL.

Task

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For each singer, find the most expensive (price) song and the newest (year) album. Use FULL OUTER JOIN to see what's the result is. You should show singers.naming, songs.price with price alias, and albums.year with year alias values.

Solution

SELECT singers.naming, MAX(albums.year) AS year, MAX(songs.price) AS price
FROM songs
FULL OUTER JOIN singers ON songs.singer_id=singers.id
FULL OUTER JOIN albums ON songs.album_id=albums.id
GROUP BY singers.id

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Section 2. Chapter 4
single

single

SELECT singers._ _ _
FROM songs
_ _ _ singers _ _ _
_ _ _ albums _ _ _
GROUP BY _ _ _
Query ResultQuery Result
No query executed yet...

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