iphone中使用SQLITE3数据库

 
static int callback(void *p, int argc, char **argv, char **azColName)
 {
      int i = 0;
      [(NSMutableArray*)p addObject:[NSString stringWithUTF8String:argv[i] ? argv[i] : "NULL"]];
      
      return 0;
  }   
  
  void sqlite3_superquery(NSString* filename, NSString* sql, NSMutableArray* array)
  {
      sqlite3 *db;
      char* error = 0;
      int rc;
      
      rc = sqlite3_open(filename.UTF8String, &db);
      if (rc)
          NSLog(@"ERROR: cannot open database");
      else
      {
          rc = sqlite3_exec(db, sql.UTF8String, callback, array, &error);
          if (rc != SQLITE_OK)
          {
              NSLog(@"ERROR: sql error");
              printf("ERROR: %s", error);
              sqlite3_free(error);
          }   
      }   
      sqlite3_close(db);
 }