The solution is quite simple:
$sth->bind_param(1,$var,&{"DBI::$coltype"}());

But the question is why my version (&{"DBI::$coltype"}) runs in a single script and why it doesn't work after splitting into script and module...

In reply to Re^4: Accessing MS-Access memofield via DBI by reneeb
in thread Accessing MS-Access memofield via DBI by reneeb

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