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1.选择数据库 USE刚链接到 方法:USE语句 USE Mdatabase; 如此,才能打开数据库,读取其中的数据 2.显示信息 SHOWMySQL从内部表中提取信息 SHOW database; 返回可用数据库的一个列表 SHOW tables; 返回数据库内的表的列表 SHOW columns from table; 显示表列 3.创建表 CREATE TABLE基本语法: //by LMY CREATE DATABASE 数据库名; /*创建数据库*/ USE 数据库名; /*连接数据库*/ CREATE TABLE 表名1 ( 列名1 数据类型 要求, 列名2 数据类型 要求, 列名3 数据类型 要求, ....... PRIMARY KEY (主键) /*注意,此处没有逗号*/ ); 以我的数据库作业作为栗子: (环境, 要求: 创建一个名为” 首先,打开 之后,在新的文件中写入 写入相应 完整代码如下: drop database if exists `my_own_movie_database`; create database `my_own_movie_database`; USE `my_own_movie_database`; CREATE TABLE `movieexec` ( `name` char(30) DEFAULT NULL, `address` varchar(100) DEFAULT NULL, `cert` int(11) NOT NULL DEFAULT '0 ', `netWorth` int(11) DEFAULT NULL, PRIMARY KEY (`cert`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8; # # Data for table "movieexec" # INSERT INTO `movieexec` VALUES ('Calvin Coolidge','Fast Lane',123,20000000),('Merv Griffin','Riot Rd.',199,112000000),('Stephen Spielberg','123 ET road',222,100000000),('Ted Turner','Turner Av.',333,125000000),('George Lucas','Oak Rd.',555,200000000),('Jane Fonda','Turner Av.',567,200000000); # # Source for table "movies" # CREATE TABLE `studio` ( `name` char(30) NOT NULL DEFAULT '', `address` varchar(100) DEFAULT NULL, `presC` int(11) DEFAULT NULL, PRIMARY KEY (`name`) ) ; # # Data for table "studio" # INSERT INTO `studio` VALUES ('MGM','MGM Boulevard',123),('Fox','Fox Boulevard',199),('Disney','Disney Boulevard',222),('USA Entertainm','USA Entertainm Boulevard',333),('Paramount','Paramount Boulevard',555); CREATE TABLE `movies` ( `title` char(100) NOT NULL DEFAULT '', `year` int(11) NOT NULL DEFAULT '0', `length` int(11) DEFAULT NULL, `movieType` char(10) DEFAULT NULL, `studioName` char(30) , `producerC` int(11) DEFAULT NULL, PRIMARY KEY (`title`,`year`), foreign key(studioName) references studio(name) on delete cascade ) ; # # Data for table "movies" # INSERT INTO `movies` VALUES ('Empire Strikes Back',1980,111,'drama','Fox',555),('Gone With the Wind',1938,null,'drama','MGM',123),('Logan\'s run',1977,120,'drama','MGM',888),('Pretty Woman',1990,119,'drama','Disney',999),('Star Trek',1979,132,'sciFic','Paramount',444),('Star Trek: Nemesis',2002,116,'sciFic','Paramount',321),('Star Wars',1977,124,'sciFic','Fox',555),('Terms of Endearment',1983,132,'drama','MGM',123),('The Man Who Wasn\'t There',2001,116,'comedy','USA Entertainm',777),('The Usual Suspects',1995,106,'drama','MGM',999); # # Source for table "moviestar" # CREATE TABLE `moviestar` ( `name` char(30) NOT NULL DEFAULT '', `address` varchar(255) DEFAULT NULL, `gender` char(1) DEFAULT NULL, `birthdate` date DEFAULT NULL, PRIMARY KEY (`name`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8; # # Data for table "moviestar" # INSERT INTO `moviestar` VALUES ('Alec Baldwin','Baldwin Av.','M','1977-06-07'),('Debra Winger','A way','F','1978-05-06'),('Harrison Ford','Prefect Rd.','M','1955-05-05'),('Jack Nicholson''s','X path','M','1949-05-05'),('Jane Fonda','Turner Av.','F','1977-07-07'); # # Source for table "starsin" # CREATE TABLE `starsin` ( `movieTitle` char(100) NOT NULL DEFAULT '', `movieYear` int(11) NOT NULL DEFAULT '0', `starName` char(30) NOT NULL DEFAULT '', PRIMARY KEY (`movieTitle`,`movieYear`,`starName`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8; # # Data for table "starsin" # INSERT INTO `starsin` VALUES ('Empire Strikes Back',1980,'Harrison Ford'),('Star Wars',1977,'Carrie Fisher'),('Star Wars',1977,'Harrison Ford'),('Star Wars',1977,'Mark Hamill'),('Terms of Endearment',1983,'Debra Winger'),('Terms of Endearment',1983,'Jack Nicholson'),('The Usual Suspects',1995,'Kevin Spacey'); # # Source for table "studio" # 4.插入数据 INSERT基本写法: INSERT INTO 表名1 VALUES (数据1,数据2,数据3.....),(数据1,数据2......)....; 最后,运行,快捷键:Ctrl +Shift+Enter 到此这篇关于 |
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