How to Compare two rows in Sqlite3 table? - authentication

Question

Here i m trying to compare details of rows values in consisting table.here my table contents [here my table
][1]
and also here my code
`-
(IBAction)LogIn:(id)sender {
sqlite3 *dbConnection;
const char *dbpath = [[sharedobj getSandboxPath] UTF8String];
sqlite3_stmt *statement;
if (sqlite3_open(dbpath, &dbConnection) == SQLITE_OK)
{
NSString *querySQL = #"SELECT USERNAME, PASSWORD FROM NEWVALUES";
const char *query_stmt = [querySQL UTF8String];
if (sqlite3_prepare_v2(dbConnection,
query_stmt, -1, &statement, NULL) == SQLITE_OK)
{
if (sqlite3_step(statement) == SQLITE_ROW)
{
NSString *emailId = [[NSString alloc]
initWithUTF8String:
(const char *) sqlite3_column_text(statement,0)];
NSString *password = [[NSString alloc]
initWithUTF8String:(const char *)
sqlite3_column_text(statement, 1)];
if ([emailId isEqualToString:self.userNameField.text] || [password isEqualToString:self.passwordField.text]) {
NSLog(#"Login Credentials Correct");
CHECKViewController *checkobj=[self.storyboard instantiateViewControllerWithIdentifier:#"CHECK"];
[self.navigationController pushViewController:checkobj animated:YES];
}
else{
UIAlertView *alert = [[UIAlertView alloc]
initWithTitle:#"Error"
message:#"Login Credentials are Incorrect"
delegate:nil
cancelButtonTitle:nil
otherButtonTitles:#"OK ", nil];
[alert show];
}
}
NSLog(#"Login Details %# %#",self.userNameField.text ,self.passwordField.text );
}
sqlite3_finalize(statement);
}
else{
NSLog(#"SQLITE NOT OK");
NSLog(#"Error %s ", sqlite3_errmsg(dbConnection));
}
sqlite3_close(dbConnection);
}
imgur.com/QW6KX.png
when enter first row values it working but when i enter second row values it not comparing .what i m doing wrong here?
Please give suggestions to fix this issue.
thanks in advance.