In that case, first thing I'd do is reduce the code to the absolute bare minimum; ie 1 simple hard-coded insert of 1 row with one undef in it and see what happens.
Then try assigning the undef to a var and using bind vars.

In reply to Re: DBI Inserting undef as literal string 'null' by Anonymous Monk
in thread DBI Inserting undef as literal string 'null' by marmanold

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