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/MySQL開發技巧(二)
怎么沒有學習課件
2015-12-05
源自:MySQL開發技巧(二) 2-1
正在回答
你跟著視頻,自己動手去敲,重在理解
tongwust 提問者
自己建的,和老師有一丟丟不一樣,數據也插入了,自取,可參考。
-- 師徒四人
CREATE TABLE user1(
id TINYINT UNSIGNED PRIMARY KEY AUTO_INCREMENT,
user_name VARCHAR(20),
user_over VARCHAR(20),
mobile VARCHAR(20)
)
INSERT INTO user1 VALUES(NULL,'唐僧','功德佛',NULL);
INSERT INTO user1 VALUES(NULL,'豬八戒','凈壇使者',NULL);
INSERT INTO user1 VALUES(NULL,'孫悟空','斗戰勝佛',NULL);
INSERT INTO user1 VALUES(NULL,'沙僧','金身羅漢',NULL);
SELECT * FROM user1;
-- 悟空結拜兄弟
CREATE TABLE user2(
user_over VARCHAR(20)
);
INSERT INTO user2 VALUES(NULL,'孫悟空','成佛');
INSERT INTO user2 VALUES(NULL,'牛魔王','被降伏');
INSERT INTO user2 VALUES(NULL,'蛟魔王','被降伏');
INSERT INTO user2 VALUES(NULL,'鵬魔王','被降伏');
INSERT INTO user2 VALUES(NULL,'獅駝王','被降伏');
SELECT * FROM user2;
-- 打怪記錄表
CREATE TABLE user_kills(
user_id TINYINT UNSIGNED,
timestr DATETIME,
kills SMALLINT UNSIGNED
INSERT INTO user_kills VALUES(NULL,2,'2013-01-10',10);
INSERT INTO user_kills VALUES(NULL,2,'2013-02-01',2);
INSERT INTO user_kills VALUES(NULL,2,'2013-02-05',12);
INSERT INTO user_kills VALUES(NULL,4,'2013-01-10',3);
INSERT INTO user_kills VALUES(NULL,4,'2013-02-11',5);
INSERT INTO user_kills VALUES(NULL,4,'2013-02-06',1);
INSERT INTO user_kills VALUES(NULL,3,'2013-01-11',20);
INSERT INTO user_kills VALUES(NULL,3,'2013-02-12',10);
INSERT INTO user_kills VALUES(NULL,3,'2013-02-07',17);
SELECT * FROM user_kills;
自己建表也不麻煩
最基本的原始表都沒有 模擬起來都很麻煩,你也要人性化一點吧
舉報
DBA和開發人員都必備的技能,通過本教程能夠學會更多操作技術
3 回答從實際項目出發,考慮實際意義的角度,有幾點疑問,望老師解答,thx~
1 回答感覺老師的方法很妙,可是我看不懂啊?,剛入門的菜鳥,列轉行的那個例子,好懵?
2 回答我在sql 2008寫的代碼,出錯了要怎么改?
1 回答實用性有待思考
1 回答課程的重點是啥 啊
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2015-12-15
你跟著視頻,自己動手去敲,重在理解
2019-08-22
自己建的,和老師有一丟丟不一樣,數據也插入了,自取,可參考。
-- 師徒四人
CREATE TABLE user1(
id TINYINT UNSIGNED PRIMARY KEY AUTO_INCREMENT,
user_name VARCHAR(20),
user_over VARCHAR(20),
mobile VARCHAR(20)
)
INSERT INTO user1 VALUES(NULL,'唐僧','功德佛',NULL);
INSERT INTO user1 VALUES(NULL,'豬八戒','凈壇使者',NULL);
INSERT INTO user1 VALUES(NULL,'孫悟空','斗戰勝佛',NULL);
INSERT INTO user1 VALUES(NULL,'沙僧','金身羅漢',NULL);
SELECT * FROM user1;
-- 悟空結拜兄弟
CREATE TABLE user2(
id TINYINT UNSIGNED PRIMARY KEY AUTO_INCREMENT,
user_name VARCHAR(20),
user_over VARCHAR(20)
);
INSERT INTO user2 VALUES(NULL,'孫悟空','成佛');
INSERT INTO user2 VALUES(NULL,'牛魔王','被降伏');
INSERT INTO user2 VALUES(NULL,'蛟魔王','被降伏');
INSERT INTO user2 VALUES(NULL,'鵬魔王','被降伏');
INSERT INTO user2 VALUES(NULL,'獅駝王','被降伏');
SELECT * FROM user2;
-- 打怪記錄表
CREATE TABLE user_kills(
id TINYINT UNSIGNED PRIMARY KEY AUTO_INCREMENT,
user_id TINYINT UNSIGNED,
timestr DATETIME,
kills SMALLINT UNSIGNED
)
INSERT INTO user_kills VALUES(NULL,2,'2013-01-10',10);
INSERT INTO user_kills VALUES(NULL,2,'2013-02-01',2);
INSERT INTO user_kills VALUES(NULL,2,'2013-02-05',12);
INSERT INTO user_kills VALUES(NULL,4,'2013-01-10',3);
INSERT INTO user_kills VALUES(NULL,4,'2013-02-11',5);
INSERT INTO user_kills VALUES(NULL,4,'2013-02-06',1);
INSERT INTO user_kills VALUES(NULL,3,'2013-01-11',20);
INSERT INTO user_kills VALUES(NULL,3,'2013-02-12',10);
INSERT INTO user_kills VALUES(NULL,3,'2013-02-07',17);
SELECT * FROM user_kills;
2016-03-09
自己建表也不麻煩
2015-12-19
最基本的原始表都沒有 模擬起來都很麻煩,你也要人性化一點吧