MiniSQL.h

#if !defined(_MINISQL_H_)
#define _MINISQL_H_

#include<iostream>
#include<afx.h>
#include<stdlib.h>
#include<math.h>
#include<direct.h>

#define FILE_COUNTER 1
#define FILE_INFO_LENGTH 671
#define ATTR_INFO_LENGTH 20
#define FILE_HEAD_LENGTH 31

//定义表的索引节点信息
struct index_info
{
    string index_name;
    int length;
    char type;
    long offset;
    string value;
};

//定义delete 语句的条件信息
struct condition_info
{
    char left_type;
    int left_len;
    long left_offset;
    string left_index_name;
    char right_type;
    int right_len;
    long right_offset;
    string right_index_name;
    string const_data;
    string condition;
};

//定义select 语句显示各属性信息
struct attr_info
{
    string attr_name;
    int offset;
    int length;
    char type;
};

#endif