一文详解mysql视图

CREATE TABLE v01_user (    
id INT(11) NOT NULL AUTO_INCREMENT COMMENT '主键ID',
  user_name VARCHAR(20) DEFAULT NULL COMMENT '用户名',
    phone VARCHAR(20) DEFAULT NULL COMMENT '手机号',
    pass_word VARCHAR(64) DEFAULT NULL COMMENT '密码',
    card_id VARCHAR(18) DEFAULT NULL COMMENT '身份证ID',
    pay_card VARCHAR(25) DEFAULT NULL COMMENT '卡号',
  PRIMARY KEY (id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COMMENT '用户表';
CREATE TABLE v02_order (    
id INT(11) NOT NULL AUTO_INCREMENT COMMENT '主键ID',
    user_id INT(11) NOT NULL COMMENT '用户ID',
    order_no VARCHAR(32) DEFAULT NULL COMMENT '订单编号',
    good_name VARCHAR(60) DEFAULT NULL COMMENT '商品名称',
    good_id INT(11) DEFAULT NULL COMMENT '商品ID',    
    num INT(11) DEFAULT NULL COMMENT '购买数量',
    total_price DECIMAL(10,2) DEFAULT NULL COMMENT '总价格',
  PRIMARY KEY (id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COMMENT '订单表';

CREATE OR REPLACE VIEW view_name 
AS select_statement

CREATE OR REPLACE VIEW user_order_view AS SELECT
    t1.id,t1.user_name,t2.order_no,t2.good_id,
    t2.good_name,t2.num,t2.total_price
FROM v01_user t1
LEFT JOIN v02_order t2 ON t2.user_id = t1.id;

SELECT * FROM user_order_view WHERE user_name='Cicada';
查看视图
SHOW CREATE VIEW user_order_view ;
修改视图
ALTER VIEW view_name AS select_statement ;
删除视图
DROP VIEW [IF EXISTS] view_name ;

UPDATE user_order_view SET user_name='smile' WHERE id='1';

EXPLAIN SELECT * FROM user_order_view ;