Sub query with IN command : In « Select Clause « SQL / MySQL






Sub query with IN command

   
/*

mysql> SELECT ArticleTitle, Copyright
    -> FROM Articles
    -> WHERE Copyright IN
    ->    (
    ->       SELECT b.copyright
    ->       FROM Articles AS b JOIN AuthorArticle AS ab USING (ArticleID)
    ->          JOIN Authors AS a USING (AuthID)
    ->       WHERE AuthorLastName='Yin'
    ->    )
    -> ORDER BY ArticleTitle;
+--------------+-----------+
| ArticleTitle | Copyright |
+--------------+-----------+
| Conferences  |      1996 |
+--------------+-----------+
1 row in set (0.00 sec)


*/

Drop table Articles;
Drop table Authors;
Drop table AuthorArticle;



CREATE TABLE Articles (
   ArticleID SMALLINT NOT NULL PRIMARY KEY,
   ArticleTitle VARCHAR(60) NOT 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 (AuthID) REFERENCES Authors (AuthID),
   FOREIGN KEY (ArticleID) REFERENCES Articles (ArticleID)
)
ENGINE=INNODB;


INSERT INTO AuthorArticle VALUES (1006, 14356), 
                              (1008, 15729), 
                              (1009, 12786), 
                              (1010, 17695),
                              (1011, 15729), 
                              (1012, 19264), 
                              (1012, 19354), 
                              (1014, 16284);
  
SELECT ArticleTitle, Copyright
FROM Articles
WHERE Copyright IN
   (
      SELECT b.copyright
      FROM Articles AS b JOIN AuthorArticle AS ab USING (ArticleID)
         JOIN Authors AS a USING (AuthID)
      WHERE AuthorLastName='Yin'
   )
ORDER BY ArticleTitle;


           
         
    
    
  








Related examples in the same category

1.Use IN for static values
2.Simple demo for IN
3.Use IN and order rows
4.Simple demo for NOT IN
5.Use IN for string value
6.Use IN and BETWEEN AND
7.Use IN in where clause
8.Find the match numbers and the number of sets won and lost of all matches that were won 3-1 or 3-2.
9.In operator and char type
10.SELECT statement uses the NOT IN operator
11.Constant value with in opertator
12.Comparisons with a large number of values can be carried out easily with IN:
13.Sub query with NOT IN command