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SQL / MySQL » Table Index » Alter Table

Alter table: add primary key, foreign key and add column




Drop table Books;



CREATE TABLE Books

(

   ID SMALLINT NOT NULL,

   Name VARCHAR(40) NOT NULL,

   PubID SMALLINT NOT NULL DEFAULT 'Unknown'

)

ENGINE=INNODB;



Describe Books;

  

ALTER TABLE Books

ADD PRIMARY KEY (BookID),

ADD CONSTRAINT fk_1 FOREIGN KEY (PubID) REFERENCES Publishers (PubID),

ADD COLUMN Format ENUM('paperback', 'hardcover') NOT NULL AFTER Name;



Describe Books;

Related examples in the same category

1.	Altering Database Tables: Add a Column
2.	Altering Database Tables: Add More Columns
3.	Altering Database Tables: Drop a Column
4.	Altering Database Tables: Drop Unique Constraint and Add Primary Key
5.	Alter table: add unique
6.	Alter table: drop primary and foreign key
7.	Altering and Dropping Tables

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