oracle学习笔记
登录oracle数据库，通过sqlpuls
创建用户，并指定密码
通过使用以下 GRANT 语句授予 changming 用户权限：
GRANT CONNECT, RESOURCE, DBA TO changming;
登录新账号changming
运行SQL脚本。
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-- Name : OT (Oracle Tutorial) Sample Database
-- Link : http://www.oracletutorial.com/oracle-sample-database/
-- Version : 1.0
-- Last Updated: July-28-2017
-- Copyright : Copyright © 2017 by www.oracletutorial.com. All Rights Reserved.
-- Notice : Use this sample database for the educational purpose only.
-- Credit the site oracletutorial.com explitly in your materials that
-- use this sample database.
--------------------------------------------------------------------------------------
---------------------------------------------------------------------------
-- execute the following statements to create tables
---------------------------------------------------------------------------
-- regions
CREATE TABLE regions
(
region_id NUMBER GENERATED BY DEFAULT AS IDENTITY
START WITH 5 PRIMARY KEY,
region_name VARCHAR2( 50 ) NOT NULL
);
-- countries table
CREATE TABLE countries
(
country_id CHAR( 2 ) PRIMARY KEY ,
country_name VARCHAR2( 40 ) NOT NULL,
region_id NUMBER , -- fk
CONSTRAINT fk_countries_regions FOREIGN KEY( region_id )
REFERENCES regions( region_id )
ON DELETE CASCADE
);
-- location
CREATE TABLE locations
(
location_id NUMBER GENERATED BY DEFAULT AS IDENTITY START WITH 24
PRIMARY KEY ,
address VARCHAR2( 255 ) NOT NULL,
postal_code VARCHAR2( 20 ) ,
city VARCHAR2( 50 ) ,
state VARCHAR2( 50 ) ,
country_id CHAR( 2 ) , -- fk
CONSTRAINT fk_locations_countries
FOREIGN KEY( country_id )
REFERENCES countries( country_id )
ON DELETE CASCADE
);
-- warehouses
CREATE TABLE warehouses
(
warehouse_id NUMBER
GENERATED BY DEFAULT AS IDENTITY START WITH 10
PRIMARY KEY,
warehouse_name VARCHAR( 255 ) ,
location_id NUMBER( 12, 0 ), -- fk
CONSTRAINT fk_warehouses_locations
FOREIGN KEY( location_id )
REFERENCES locations( location_id )
ON DELETE CASCADE
);
-- employees
CREATE TABLE employees
(
employee_id NUMBER
GENERATED BY DEFAULT AS IDENTITY START WITH 108
PRIMARY KEY,
first_name VARCHAR( 255 ) NOT NULL,
last_name VARCHAR( 255 ) NOT NULL,
email VARCHAR( 255 ) NOT NULL,
phone VARCHAR( 50 ) NOT NULL ,
hire_date DATE NOT NULL ,
manager_id NUMBER( 12, 0 ) , -- fk
job_title VARCHAR( 255 ) NOT NULL,
CONSTRAINT fk_employees_manager
FOREIGN KEY( manager_id )
REFERENCES employees( employee_id )
ON DELETE CASCADE
);
-- product category
CREATE TABLE product_categories
(
category_id NUMBER
GENERATED BY DEFAULT AS IDENTITY START WITH 6
PRIMARY KEY,
category_name VARCHAR2( 255 ) NOT NULL
);
-- products table
CREATE TABLE products
(
product_id NUMBER
GENERATED BY DEFAULT AS IDENTITY START WITH 289
PRIMARY KEY,
product_name VARCHAR2( 255 ) NOT NULL,
description VARCHAR2( 2000 ) ,
standard_cost NUMBER( 9, 2 ) ,
list_price NUMBER( 9, 2 ) ,
category_id NUMBER NOT NULL ,
CONSTRAINT fk_products_categories
FOREIGN KEY( category_id )
REFERENCES product_categories( category_id )
ON DELETE CASCADE
);
-- customers
CREATE TABLE customers
(
customer_id NUMBER
GENERATED BY DEFAULT AS IDENTITY START WITH 320
PRIMARY KEY,
name VARCHAR2( 255 ) NOT NULL,
address VARCHAR2( 255 ) ,
website VARCHAR2( 255 ) ,
credit_limit NUMBER( 8, 2 )
);
-- contacts
CREATE TABLE contacts
(
contact_id NUMBER
GENERATED BY DEFAULT AS IDENTITY START WITH 320
PRIMARY KEY,
first_name VARCHAR2( 255 ) NOT NULL,
last_name VARCHAR2( 255 ) NOT NULL,
email VARCHAR2( 255 ) NOT NULL,
phone VARCHAR2( 20 ) ,
customer_id NUMBER ,
CONSTRAINT fk_contacts_customers
FOREIGN KEY( customer_id )
REFERENCES customers( customer_id )
ON DELETE CASCADE
);
-- orders table
CREATE TABLE orders
(
order_id NUMBER
GENERATED BY DEFAULT AS IDENTITY START WITH 106
PRIMARY KEY,
customer_id NUMBER( 6, 0 ) NOT NULL, -- fk
status VARCHAR( 20 ) NOT NULL ,
salesman_id NUMBER( 6, 0 ) , -- fk
order_date DATE NOT NULL ,
CONSTRAINT fk_orders_customers
FOREIGN KEY( customer_id )
REFERENCES customers( customer_id )
ON DELETE CASCADE,
CONSTRAINT fk_orders_employees
FOREIGN KEY( salesman_id )
REFERENCES employees( employee_id )
ON DELETE SET NULL
);
-- order items
CREATE TABLE order_items
(
order_id NUMBER( 12, 0 ) , -- fk
item_id NUMBER( 12, 0 ) ,
product_id NUMBER( 12, 0 ) NOT NULL , -- fk
quantity NUMBER( 8, 2 ) NOT NULL ,
unit_price NUMBER( 8, 2 ) NOT NULL ,
CONSTRAINT pk_order_items
PRIMARY KEY( order_id, item_id ),
CONSTRAINT fk_order_items_products
FOREIGN KEY( product_id )
REFERENCES products( product_id )
ON DELETE CASCADE,
CONSTRAINT fk_order_items_orders
FOREIGN KEY( order_id )
REFERENCES orders( order_id )
ON DELETE CASCADE
);
-- inventories
CREATE TABLE inventories
(
product_id NUMBER( 12, 0 ) , -- fk
warehouse_id NUMBER( 12, 0 ) , -- fk
quantity NUMBER( 8, 0 ) NOT NULL,
CONSTRAINT pk_inventories
PRIMARY KEY( product_id, warehouse_id ),
CONSTRAINT fk_inventories_products
FOREIGN KEY( product_id )
REFERENCES products( product_id )
ON DELETE CASCADE,
CONSTRAINT fk_inventories_warehouses
FOREIGN KEY( warehouse_id )
REFERENCES warehouses( warehouse_id )
ON DELETE CASCADE
);
列出 changming 当前用户拥有的表来验证表
SELECT table_name FROM user_tables ORDER BY Table_name;
将数据导入到oracle数据库中。
![[ot_data.sql]]
显示当前的conname
show con_name;
这里的oracl 是数据库。
