[SQL] Ich verzweifle an MySQL und Indexes

SELECT * FROM `Frauen` WHERE index = '1'

Leider bekomme ich dann aber immer folgende Fehlermeldung: Warning: mysql_numrows(): supplied argument is not a valid MySQL result resource in

Und mysql_error(): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'index = '1'' at line 1

$sqlData = "SELECT * FROM `Frauen` WHERE index = '1'";
echo $sqlData;

$conn = mysql_connect($mySQLLoginData[0], $mySQLLoginData[1], $mySQLLoginData[2]);
mysql_select_db($mySQLLoginData[3],$conn);
$sql = mysql_query($sqlData);
echo mysql_error();

$num=mysql_numrows($sql);
mysql_close();

$i=0;
while($i < $num) { $name = mysql_result($sql,$i,"name"); $vorname=mysql_result($sql,$i,"vorname");}