前16个字节是checksum 后面跟着的是，1个字节加密算法，4个字节的压缩后数据长度，4个字节的压缩前数据长度，压缩的数据 前16个字节是checksum 后面跟着的是，1个字节加密算法，4个字节的压缩后数据长度，4个字节的压缩前数据长度，压缩的数据 循环
声明的文件：ClickHouse-master\ClickHouse-master\src\Compression\CompressionInfo.h
enum class CompressionMethodByte : uint8_t
{
NONE = 0x02,
LZ4 = 0x82,
ZSTD = 0x90,
Multiple = 0x91,
Delta = 0x92,
T64 = 0x93,
DoubleDelta = 0x94,
Gorilla = 0x95,
AES_128_GCM_SIV = 0x96,
AES_256_GCM_SIV = 0x97,
FPC = 0x98,
DeflateQpl = 0x99,
GCD = 0x9a,
ZSTD_QPL = 0x9b,
};
g++ -std=c++11 main.cpp city.cc
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