Part 1

1. in IDE
   • copy /index.php into /test.php
   • in the /test.php replace

$application->Run();
$application->Done();

with

$sql = 'SELECT PhraseKey
FROM ' . TABLE_PREFIX . 'LanguageLabels
LIMIT 0,1';
$data = $application->Conn->GetColIterator($sql);

2. on Front-End
   • open Debugger
   • confirm, that above executed SQL is shown in Debugger
   • confirm, that [Result: ...] part is present below that SQL (the ... can be any phrase key)

Part 2

1. in IDE
   • copy /index.php into /test.php
   • in the /test.php replace

$application->Run();
$application->Done();

with

$sql = 'SELECT PhraseKey
FROM ' . TABLE_PREFIX . 'LanguageLabels
LIMIT 0,1';
$data = $application->Conn->GetIterator($sql);

2. on Front-End
   • open Debugger
   • confirm, that above executed SQL is shown in Debugger
   • confirm, that [Result: ...] part is present below that SQL (the ... can be any phrase key)