Home >Database >Mysql Tutorial >Delete DB command package and analysis of mysql protocol
https://github.com/sea-boat/mysql-protocol
The mysql client tells the server to delete a certain schema by deleting the DB command package.
Type | Name | Description |
---|---|---|
int5bdf4c78156c7953567bb5a0aef2fc53 | payload length | Stored according to the least significant byte first, 3-byte payload and 1-byte sequence number combination Into the message header |
intf35d6e602fd7d0f0edfa6f7d103c1b57 | sequence number | |
payload | Message body, the length is the previously specified payload length |
Payload
1 [06] COM_DROP_DBstring[EOF] schema nameMore details: http://dev.mysql.com/doc/internals/en/com-drop-db.htmlDelete DB command package operation
/** * * <pre class="brush:php;toolbar:false"><b>mysql drop db packet.</b>* @author *
seaboat*
<b>email: </b>849586227@qq.com*
<b>blog: </b>http://www.php.cn/;/pre> * @version 1.0 * @see http://www.php.cn/ */public class DropDBPacket extends MySQLPacket { public byte flag; public byte[] schema; @Override public void read(byte[] data) { MySQLMessage mm = new MySQLMessage(data); packetLength = mm.readUB3(); packetId = mm.read(); flag = mm.read(); this.schema = mm.readBytes(); } @Override public void write(ByteBuffer buffer) { BufferUtil.writeUB3(buffer, calcPacketSize()); buffer.put(packetId); buffer.put(COM_DROP_DB); buffer.put(schema); } @Override public int calcPacketSize() { int i = 1; i += schema.length; return i; } @Override protected String getPacketInfo() { return "MySQL Drop DB Packet"; } }