Hardly a complete answer, but handy for the particular true/false problem that you mention is, for the postgres side: $dbh->{pg_bool_tf}, which lets you choose between t/f or 1/0: 

$ perl -Mstrict -MDBI -E 'my$dbh=DBI->connect("dbi:Pg:");

$dbh->{pg_bool_tf} = 0; # true false is now 1/0
print $dbh->selectall_arrayref("select 1=1")->[0]->[0], "\n";

$dbh->{pg_bool_tf} = 1; # true false is now t/f 
print $dbh->selectall_arrayref("select 1=1")->[0]->[0], "\n"; # 
'

output: 
1
t

[download]

(See DBD::Pg $dbh attributes.)

In reply to Re: Database abstraction including data types ( $dbh->{pg_bool_tf} ) by erix
in thread Database abstraction including data types by mbethke

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