Sub query with not equal and order : Sub query « Select Clause « SQL / MySQL

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SQL / MySQL » Select Clause » Sub query 




Sub query with not equal and order
   
/*

mysql> SELECT DISTINCT CONCAT_WS(' ', AuthorFirstName, AuthorMiddleName, AuthorL
astName) AS Author
    -> FROM Authors
    -> WHERE AuthID <>
    ->    (
    ->       SELECT ab.AuthID
    ->       FROM AuthorArticle AS ab, Articles AS b
    ->       WHERE ab.ArticleID=b.ArticleID AND ArticleTitle='AI'
    ->    )
    -> ORDER BY AuthorLastName;
+-------------------+
| Author            |
+-------------------+
| James Elk         |
| Jack K Ken        |
| Mary G. Lee       |
| Jason Carol Oak   |
| Tom M Ride        |
| Henry S. Thompson |
| Alan Wang         |
| Nelson Yin        |
+-------------------+
8 rows in set (0.16 sec)


*/       
Drop table Articles;
Drop table Authors;
Drop table AuthorArticle;



CREATE TABLE Articles (
   ArticleID SMALLINT NOT NULL PRIMARY KEY,
   ArticleTitle VARCHAR(60NOT NULL,
   Copyright YEAR NOT NULL
)
ENGINE=INNODB;


INSERT INTO Articles VALUES (12786'How write a paper', 1934),
                            (13331'Publish a paper', 1919),
                            (14356'Sell a paper', 1966),
                            (15729'Buy a paper', 1932),
                            (16284'Conferences', 1996),
                            (17695'Journal', 1980),
                            (19264'Information', 1992),
                            (19354'AI', 1993);


CREATE TABLE Authors (
   AuthID SMALLINT NOT NULL PRIMARY KEY,
   AuthorFirstName VARCHAR(20),
   AuthorMiddleName VARCHAR(20),
   AuthorLastName VARCHAR(20)
)
ENGINE=INNODB;


INSERT INTO Authors VALUES (1006'Henry', 'S.', 'Thompson'),
                           (1007'Jason', 'Carol', 'Oak'),
                           (1008'James', NULL, 'Elk'),
                           (1009'Tom', 'M''Ride'),
                           (1010'Jack', 'K''Ken'),
                           (1011'Mary', 'G.', 'Lee'),
                           (1012'Annie', NULL, 'Peng'),
                           (1013'Alan', NULL, 'Wang'),
                           (1014'Nelson', NULL, 'Yin');


CREATE TABLE AuthorArticle (
   AuthID SMALLINT NOT NULL,
   ArticleID SMALLINT NOT NULL,
   PRIMARY KEY (AuthID, ArticleID),
   FOREIGN KEY (AuthIDREFERENCES Authors (AuthID),
   FOREIGN KEY (ArticleIDREFERENCES Articles (ArticleID)
)
ENGINE=INNODB;


INSERT INTO AuthorArticle VALUES (100614356)
                              (100815729)
                              (100912786)
                              (101017695),
                              (101115729)
                              (101219264)
                              (101219354)
                              (101416284);
  
SELECT DISTINCT CONCAT_WS(' ', AuthorFirstName, AuthorMiddleName, AuthorLastNameAS Author
FROM Authors
WHERE AuthID <>
   (
      SELECT ab.AuthID
      FROM AuthorArticle AS ab, Articles AS b
      WHERE ab.ArticleID=b.ArticleID AND ArticleTitle='AI'
   )
ORDER BY AuthorLastName;


           
         
    
    
  














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