desc是关键字。
这样改:
insert into story(type_id,story_sn,new_title,author,keywords,word_number,`desc`)values ('1','11111','1111','011','11111','1111','aaaaa')我这有一篇别人的, 你先用用吧(未经过测试,但应该没问题)// MySql2.cpp : Defines the entry point for the console application.
//
#include "stdafx.h"
//在DBMS中线要创建数据库www,table www,file字段数据类型用LONGTEXT即可测试
//测试文件c:\test.iso,你可以找任何一个文件修改为即可,我找的是一个exe程序,修改为test.iso而已
//最大测试过加入文件大小为650M(一个正真的iso文件)
//注意:还要修改my.ini文件中的max_allowed_packet字段,我设置的是
//max_allowed_packet = 1024M
//#define host "localhost" //mysql server
//#define username "root"
//#define password "674800"
//#define database "test"
//int port = 3306
#include <Winsock2.h>
#include <stdio.h>
#include <mysql.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#define host "localhost" //mysql server
#define username "root"
#define password "674800"
#define database "www"
int port = 3306
#pragma comment(lib,"libmysql.lib")
//得到文件的大小(字节数)
int get_file_size(char *path, off_t *size)
{
struct stat file_stats
if(stat(path, &file_stats))
return -1
*size = file_stats.st_size
return 0
}
int main(int argc, char *argv[])
{
char *filename=NULL
off_t size
MYSQL *conn=NULL
MYSQL_RES *res_set=NULL
MYSQL_ROW row
MYSQL_FIELD *field=NULL
int i, flag
char *sql //sql语句
FILE *fp
char *buf
int n=256
char *end
unsigned long *length
/* if (argc != 2)
{
printf("Usage: %s srcfilen", argv[0])
exit(1)
}
*/
filename = "c:\test.iso"
if ((get_file_size(filename, &size)) == -1) //得到文件的大小
{
perror("get file size" )
exit(1)
}
if ((buf = (char *)malloc(sizeof(char)*(size+1))) == NULL)
{
perror("malloc buf" )
exit(1)
}
if ((fp = fopen(filename, "rb" )) == NULL) //读文件
{
perror("fopen file" )
exit(1)
}
if ((n = fread(buf, 1, size, fp)) <0) //读文件失败
{
perror("fread file" )
exit(1)
}
sql = (char *)malloc(sizeof(char)*n*2+256)//2n+1+strlen(other sql)
if (sql == NULL)
{
perror("malloc sql" )
exit(1)
}
conn = mysql_init(NULL)//生产一个mysql对象
if (conn == NULL)
{
printf("init mysql, %sn", mysql_error(conn))
exit(1)
}
if ((mysql_real_connect(conn, host, username, password, database, port, NULL, 0)) == NULL) //连接服务器
{
printf("connect mysql, %sn", mysql_error(conn))
exit(1)
}
strcpy(sql, "insert into www(id, name, file) values(NULL, 'peter', " )
end = sql
end += strlen(sql)//point sql tail
//convert NUL(ASCII 0)、'n'、'r'、''’、'''、'"'和Control-Z and so on
*end++ = '''
end += mysql_real_escape_string(conn, end, buf, n)
*end++ = '''
*end++ = ')'
flag = mysql_real_query(conn, sql, (unsigned int)(end-sql))
if (flag != 0)
{
printf("insert failed, %sn", mysql_error(conn))
exit(1)
}
if ((mysql_real_query(conn, "SELECT file FROM www where id=1", 31)) != 0)
{
printf("insert failed, %sn", mysql_error(conn))
exit(1)
}
res_set = mysql_store_result(conn)
fclose(fp)
fp = NULL
fp = fopen("c:\123.iso", "wb" )
while ((row = mysql_fetch_row(res_set)) != NULL)
{
length = mysql_fetch_lengths(res_set)
for (i=0i<mysql_num_fields(res_set)i++)
{
fwrite(row[0], 1, length[0], fp)
//printf("%sn",row[0])
}
}
fclose(fp)
mysql_close(conn)
free(sql)
free(buf)
sql = NULL
return 0
}
你可以这样改:table为你的表名,text是关键字,要加`,这个符号再esc键下面,不要加shiftupdate
table
set
`text`=concat(id,substring(`'text`,2,length(`text`)))
这样就可以把id都加进去了。text中数据是你insert进去的,既然自己知道要怎样的效果,一开始就要设计好。
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