+ my $insert= $dbh->prepare(<<'END')
+ INSERT OR IGNORE INTO commods
+ (unitmass,
+ unitvolume,
+ commodname)
+ VALUES (?,?,?);
+END
+ ;
+ my $update= $dbh->prepare(<<'END')
+ UPDATE commods
+ SET unitmass = ?,
+ unitvolume = ?
+ WHERE commodname = ?