Startup Message
Length：长度
Major:3
Minor:0
User:数据库登陆用户名
Database:数据库
Application_name:客户端名称
Authentication request
Type：0x52(Authentication request)
Length:长度
Authentication type:5(MD5 password)
Salt Value:盐值
Type：0x52(Authentication request)
Length:长度
Authentication type:0(Success)
Password message
Type：0x70(Password message)
Length:长度
Password:password值
Simple query
Type：0x51(Simple query)
Length:长度
SQL:SQL语句
Command completion
Type：0x43(Command completion)
Length:长度
Tag:SQL执行语句
Row description
Type：0x54(Row description)
Length:长度
Field Count:列数
Column name:列名
Table OID:
Column Index:序号
Type OID:
Column Length:长度
Data row
Type：0x44(Data row)
Length:长度
Field Count:列数
Column length:列名
Data:数据
Termination
Type：0x58(Termination)
Length:长度
Error
Type：0x45(Error)
Length:整形
Severity:字符串
Text:字符串
Code:整形
Message:字符串