Mysql_fetch_array (): supplied argument is not a valid MySQL result resource, how to fix

Mysql_fetch_array (): supplied argument is not a valid MySQL result resource
mysql_connect ("localhost", "root", "1");
$query = "SELECT id from computer where user = ' test2 '";
$result =mysql_query ($query);

echo "Test2 used the
";
while ($row = Mysql_fetch_array ($result))
{
echo $row [' ID ']. " Start time ". $row [StartTime]."
";
}
Warning:mysql_fetch_array (): supplied argument is not a valid MySQL result resource in D:\myapacheweb\test\self_info.php On line 7


------Solution--------------------
No database selected
mysql_select_db (table name)
------Solution--------------------
mysql_select_db

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