
Security News
Axios Supply Chain Attack Reaches OpenAI macOS Signing Pipeline, Forces Certificate Rotation
OpenAI rotated macOS signing certificates after a malicious Axios package reached its CI pipeline in a broader software supply chain attack.
客户端工具有很多 http://www.php100.com/html/dujia/2014/1219/8098.html
学习:
CREATE DATABASE 数据库名称;
格式:
CREATE TABLE 数据库名称.表名称 (
字段名称 字段值的类型 是否允许为空 默认值 是否自增,
......字段设定
......字段设定
设定主键
)
关键字说明:
字段名称:字母数字_组合
字段值的类型:int : 整数类型
varchar(255) : 255个长度的字符串类型
BOOL : 真假类型
date :日期类型,不带时间
datetime :日期带时间类型
time :时间类型
float :浮点型
text :文本类型,长度比varchar要大得多
举例:
CREATE TABLE nodesystem.users (
uid int NOT NULL AUTO_INCREMENT,
uname varchar(255) DEFAULT NULL,
upwd varchar(255) NOT NULL,
uqq varchar(255) DEFAULT NULL,
uemail varchar(255) DEFAULT NULL,
PRIMARY KEY (uid)
)
命令格式:
inert into 表名称(表字段1,字段2,....)
values (表字段1的值,字段2的值,.....)
举例:
INSERT INTO users(uname,upwd,uqq,uemail)
VALUES ('admin', '738717afa5a7ea4cdda80d15c9ec017b','594475087','ivanyb@qq.com');
命令格式:
select * from 表名称 where 条件1 -> select * from users where uid =1
select * from 表名称 where 条件1 and 条件2 -> select * from users where uid =1 and uname = 'admin'
select * from 表名称 where 条件1 or 条件2 -> select * from users where uid =2 or uname = 'admin'
select * from 表名称 order by 字段 asc(正序排列) -> select * from users order by uid asc
select * from 表名称 order by 字段 desc(倒序排列 -> select * from users order by uid desc
select * from 表名称 limt 整数 -> select * from users limit 5 表示获取前5行数据
select * from 表名称 limt 开始整数,结束整数 -> select * from users limit 1,2 表示获取第1到第2行的数据
组合用法:获取表 users中的uid=2或者uname='admin'的数据后 对uid进行倒叙排列,再获取前面2条数据
SELECT * FROM users where uid = 2 or uname = 'admin' ORDER BY uid desc LIMIT 2
命令格式:
update 要更新的表名称 set 需要更新的表中的字段名称 = 字段值 where 条件字段 = 条件字段值
举例:
下面命令表示:更新表users中uid=2这条数据的的uqq字段的值为1109892
UPDATE users set uqq='1109892' WHERE uid = 2
命令格式:
delete from 表名称 where 条件字段 = 字段值
举例:
下面命令表示:删除表users中的uid=2的数据
DELETE from users WHERE uid = 2
可以利用名称为mysql这个nodejs第三方包来对mysql数据库中的表数据进行增,删,查,改操作
FAQs
We found that heheda demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.

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