使用SQLite数据库浏览器，我可以发送查询：
＆＃34; SELECT纬度，经度FROM位置WHERE businessid = 1453 LIMIT 3;＆＃34;
我得到三行数据。出于某种原因，在我的应用程序代码中，SQLITE_ROW值是100，通过将其分配给int和日志记录来确定。所以这会产生某种无限循环，应用程序会无限期冻结。我真的很想知道为什么这个代码适用于我的应用程序的其他区域，我在其他表中读取但不在此处。这是代码。
if(sqlite3_open([databasePath UTF8String], &database) == SQLITE_OK)
{
for (int i = 0; i < appDelegate.userList.count; i++) // for each location in the user list, add to surrounding data
{
RMLocationItem *temp = [appDelegate.userList objectAtIndex:i];
NSString *sqlStatement1 = [[NSString alloc]init];
sqlStatement1 = [NSString stringWithFormat:@"SELECT latitude, longitude FROM locations WHERE businessid = %d limit 5;", temp.businessId];
const char *sqlStatement = [sqlStatement1 UTF8String];
sqlite3_stmt *compiledStatement;
if(sqlite3_prepare_v2(database, sqlStatement, -1, &compiledStatement, NULL) == SQLITE_OK)
{
//sqlite3_bind_int(compiledStatement, 1, temp.businessId);
//int sr = SQLITE_ROW;
//NSString* myNewString = [NSString stringWithFormat:@"%d", sr];
//NSLog(myNewString);
while( sqlite3_step(compiledStatement) == SQLITE_ROW)
{
double latitude = (double) sqlite3_column_double(compiledStatement, 0);
double longitude = (double) sqlite3_column_double(compiledStatement, 1);
sqlite3_reset(compiledStatement);
RMLocationItem *newLocation = [[RMLocationItem alloc]initWithName: temp.nameOfPlace distance:0 Id:temp.businessId longitude:longitude latitude:latitude address:NULL city:NULL];
[appDelegate.surroundingRestaurants addObject:newLocation];
}
}
else NSAssert1(0, @"Error while inserting data. '%s'", sqlite3_errmsg(database));
// Release the compiled statement from memory
sqlite3_finalize(compiledStatement);
}
sqlite3_close(database);