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21-creating-and-manipulating-tables.sql
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21-creating-and-manipulating-tables.sql
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-- 第21章 创建和操纵表
########################
# Create customers table
########################
CREATE TABLE customers
(
cust_id int NOT NULL AUTO_INCREMENT,
cust_name char(50) NOT NULL ,
cust_address char(50) NULL ,
cust_city char(50) NULL ,
cust_state char(5) NULL ,
cust_zip char(10) NULL ,
cust_country char(50) NULL ,
cust_contact char(50) NULL ,
cust_email char(255) NULL ,
PRIMARY KEY (cust_id)
) ENGINE=InnoDB;
#########################
# Create orderitems table
#########################
CREATE TABLE orderitems
(
order_num int NOT NULL ,
order_item int NOT NULL ,
prod_id char(10) NOT NULL ,
quantity int NOT NULL DEFAULT 1,
item_price decimal(8,2) NOT NULL ,
PRIMARY KEY (order_num, order_item)
) ENGINE=InnoDB;
#####################
# Create orders table
#####################
CREATE TABLE orders
(
order_num int NOT NULL AUTO_INCREMENT,
order_date datetime NOT NULL ,
cust_id int NOT NULL ,
PRIMARY KEY (order_num)
) ENGINE=InnoDB;
#######################
# Create products table
#######################
CREATE TABLE products
(
prod_id char(10) NOT NULL,
vend_id int NOT NULL ,
prod_name char(255) NOT NULL ,
prod_price decimal(8,2) NOT NULL ,
prod_desc text NULL ,
PRIMARY KEY(prod_id)
) ENGINE=InnoDB;
######################
# Create vendors table
######################
CREATE TABLE vendors
(
vend_id int NOT NULL AUTO_INCREMENT,
vend_name char(50) NOT NULL ,
vend_address char(50) NULL ,
vend_city char(50) NULL ,
vend_state char(5) NULL ,
vend_zip char(10) NULL ,
vend_country char(50) NULL ,
PRIMARY KEY (vend_id)
) ENGINE=InnoDB;
###########################
# Create productnotes table
###########################
CREATE TABLE productnotes
(
note_id int NOT NULL AUTO_INCREMENT,
prod_id char(10) NOT NULL,
note_date datetime NOT NULL,
note_text text NULL ,
PRIMARY KEY(note_id),
FULLTEXT(note_text)
) ENGINE=MyISAM;
-- add column
ALTER TABLE vendors
ADD vend_phone char(20);
-- drop column
ALTER TABLE vendors
DROP COLUMN vend_phone;
-- Define foreign keys
ALTER TABLE orderitems
ADD CONSTRAINT fk_orderitems_orders FOREIGN KEY (order_num)
REFERENCES orders (order_num);
ALTER TABLE orderitems
ADD CONSTRAINT fk_orderitems_products FOREIGN KEY (prod_id)
REFERENCES products (prod_id);
ALTER TABLE orders
ADD CONSTRAINT fk_orders_customers FOREIGN KEY (cust_id)
REFERENCES customers (cust_id);
ALTER TABLE products
ADD CONSTRAINT fk_products_vendors FOREIGN KEY (vend_id)
REFERENCES vendors (vend_id);
-- drop table
DROP TABLE vendors;
-- rename table name
RENAME TABLE backup_customers TO customers;
RENAME TABLE backup_customers TO customers
backup_vendors TO vendors;