Using UPDATE Statements to Modify Data in Joined Tables : Update « Insert Delete Update « SQL / MySQL

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SQL / MySQL » Insert Delete Update » Update 
Using UPDATE Statements to Modify Data in Joined Tables

Drop table DVDs;
Drop table Studios;


CREATE TABLE DVDs
(
   DVDID SMALLINT NOT NULL AUTO_INCREMENT PRIMARY KEY,
   DVDName VARCHAR(60NOT NULL,
   NumDisks TINYINT NOT NULL DEFAULT 1,
   YearRlsd YEAR NOT NULL,
   StudID VARCHAR(4NOT NULL
ENGINE=INNODB;


CREATE TABLE Studios
(
   StudID VARCHAR(4NOT NULL,
   StudDescrip VARCHAR(40NOT NULL,
   PRIMARY KEY (StudID)
)
ENGINE=INNODB;

INSERT INTO Studios VALUES ('s101', 'Universal Studios'),
                           ('s102', 'Warner Brothers'),
                           ('s103', 'Time Warner'),
                           ('s104', 'Columbia Pictures'),
                           ('s105', 'Paramount Pictures'),
                           ('s106', 'Twentieth Century Fox'),
                           ('s107', 'Merchant Ivory Production');


INSERT INTO DVDs 
(DVDName, NumDisks, YearRlsd, StudID)
VALUES 
     ('Christmas', 12000's105'),
     ('What',      12001's103'),
     ('Out',       12000's101'),
     ('Falcon',    12000's103'),
     ('Amadeus',   11997's103'),
     ('Show',      22000's106'),
     ('View',      12000's107'),
     ('Mash',      22001's106');

select from DVDs;

select from Studios;


UPDATE DVDs, Studios
SET DVDs.StutID='s2'
WHERE DVDs.StudID=Studios.StudID
   AND Studios.StudDescrip='Time Warner';

select from DVDs;

select from Studios;

           
       
Related examples in the same category
1. Do PLUS calculation in where clause
2. Assign value in select clause
3. Modifying Row Data
4. Update with limitation and calculation
5. Update records with calculation based on two tables
6. Update two tables with calculation
7. Update with condition
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