updating a table

[harishsai]

hi all,
I use the following code to update my field check with yes if $tableName1.id is equal $tableName2.id.
but I cannot get what I want.can anyone reply me the error in my coding.

$query1=mysql_query(\"update $tableName1 set check=\'yes\',where $tableName1.id == $tableName3.id\");
mysql_query($query1) or die (mysql_error());
echo \"$query1\";

Thanks in advance

[Anon]

Remove the comma from your query string.

[harishsai]

I tried but still cannot get it.

anyother suggestion