MySQL数据库表的数据插入、修改、删除操作及实例应用
时间:2021-07-01 10:21:17
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CREATE DATABASE db0504;
2
3 USE db0504;
4
5 CREATE TABLE student (
6 sno
VARCHAR (
10)
NOT NULL UNIQUE PRIMARY KEY,
7 sname
VARCHAR (
20)
NOT NULL,
8 ssex enum (
‘男‘,
‘女‘)
NOT NULL DEFAULT ‘男‘,
9 sbirth date,
10 sclass
VARCHAR (
10),
11 zno
CHAR (
4)
12 )
DEFAULT charset
= gb2312;
13 #添加操作
14 INSERT INTO student
15 VALUES(
‘2012010713‘,
‘丁暖‘,
‘女‘,
‘1993-9-9‘,
‘物联网12-1‘,
‘z002‘);
16
17 INSERT INTO student (sno,sname,ssex,sbirth,sclass,zno)
18 VALUES(
‘2011010503‘,
‘孔超‘,
‘男‘,
‘1993-9-19‘,
‘自动化11-1‘,
‘z006‘);
19
20 INSERT INTO student (sno, sname, ssex, zno)
21 VALUES(
‘2011010521‘,
‘韩梅‘,
‘女‘,
‘z006‘);
22
23 INSERT INTO student (sname, zno, sno)
24 VALUES(
‘韩梅2‘,
‘z006‘,
‘2011010522‘);
25
26 INSERT INTO student
VALUES
27 (
‘2011010501‘,
‘孔超1‘,
‘男‘,
‘1993-9-19‘,
‘自动化11-1‘,
‘z006‘);
28 (
‘2011010505‘,
‘孔超2‘,
‘男‘,
‘1993-9-19‘,
‘自动化11-1‘,
‘z006‘);
29 (
‘2011010504‘,
‘孔超3‘,
‘男‘,
‘1993-9-19‘,
‘自动化11-1‘,
‘z006‘);
30 (
‘2011010505‘,
‘孔超4‘,
‘男‘,
‘1993-9-19‘,
‘自动化11-1‘,
‘z006‘);
31 #修改操作
32 UPDATE student
33 SET sname
= ‘张三‘,sbirth
= ‘1993-6-19‘
34 WHERE sname
= ‘丁暖‘;
35
36 UPDATE student
SET zno
= LEFT (zno,
3);
37 #删除操作
38 delete from student
39 where sname
=‘张三‘;
40
41 #清空表操作
42 truncate student;#高效
43 delete from student;
44
45 SELECT * FROM student;
插入:insert
修改:update
删除:delete
2.实例开发
MySQL数据库表的数据插入、修改、删除操作及实例应用
标签:sql语法 let arch 数据库 varchar prim blog logs 格式