Testing no placeholders, no results dbi:Sybase:server=xxx.xxx.xxx.xxx
$VAR1 = [];

Testing placeholders with results dbi:Sybase:server=xxx.xxx.xxx.xxx
$VAR1 = [
          [
            undef
          ]
        ];

Testing placeholders with no results dbi:Sybase:server=xxx.xxx.xxx.xxx
$VAR1 = [];

Testing no placeholders, no results dbi:Sybase:server=xxx.xxx.xxx.xxx;tdsLevel=CS_TDS_495
$VAR1 = [];

Testing placeholders with results dbi:Sybase:server=xxx.xxx.xxx.xxx;tdsLevel=CS_TDS_495
$VAR1 = [
          [
            undef
          ]
        ];

Testing placeholders with no results dbi:Sybase:server=xxx.xxx.xxx.xxx;tdsLevel=CS_TDS_495
(hang)