I found the error. Thanks to the suggestion to use the trace feature. I configured it to print the trace at level 4 to a file which I examined. The problem was I used the wrong column names for name and link.

"UPDATE $res_tbl SET name=?, link=?, availability=? WHERE id=?";

should have been

"UPDATE $res_tbl SET resource_name=?, resource_link=?, availability=? WHERE id=?";

However, I'm trying to understand why

$sth->execute($updated_name,$updated_link,$updated_avail,$id_to_update) || warn "Execute update failed: $dbh->errstr";

did not print an error to the browser; I guess because it returned a 1, even though it failed? I guess it should have been

$sth->execute($updated_name,$updated_link,$updated_avail,$id_to_update) && warn "Execute update failed: $dbh->errstr";?

In reply to Re: Mystified by why my UPDATE statement is not reflected in my database display by OfficeLinebacker
in thread Mystified by why my UPDATE statement is not reflected in my database display by OfficeLinebacker

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