/ 
DBIx-Simple-1.30
River stage two • 21 direct dependents • 27 total dependents
/ DBIx::Simple::Comparison

NAME

DBIx::Simple::Comparison - DBIx::Simple in DBI jargon

DESCRIPTION

This is just a simple and inaccurate overview of what DBI things the DBIx::Simple things represent, or the other way around.

This document can be useful to find the foo equivalent of bar.

? means that DBI doesn't have an equivalent or that I couldn't find one.

= means that DBIx::Simple provides a direct wrapper to the DBI function.

~ means that DBIx::Simple's method does more or less the same, but usually in a more high level way: context sensitive, combining things, automatically taking care of something.

Note that DBIx::Simple is a wrapper around DBI. It is not "better" than DBI. In fact, DBIx::Simple cannot work without DBI.

Using DBI directly is always faster than using DBIx::Simple's equivalents. (For the computer, that is. For you, DBIx::Simple is supposed to be faster.)

Classes, common names

use DBI       ~  use DBIx::Simple

$DBI::errstr  =  DBIx::Simple->error

DBI::db       ~  DBIx::Simple
$dbh          ~  $db
$dbh->errstr  =  $db->error

connect       ~  connect
connect       ~  new

DBI::st       ~  DBIx::Simple::Result
<undef>       ~  DBIx::Simple::Dummy
$sth          ~  $result

Queries

DBI

my $sth = $dbh->prepare_cached($query);
$sth->execute(@values);

~ DBIx::Simple

my $result = $db->query($query, $values);

Results

DBI                          DBIx::Simple

bind_columns              ~  bind

fetchrow_arrayref/fetch   =  fetch
fetchrow_array            ~  list
*1                        ~  flat
[@{fetchrow_arrayref}]    =  array
fetchall_arrayref         ~  arrays
fetchrow_hashref() *2*3   =  hash
fetchall_arrayref({}) *4  ~  hashes

fetchall_hashref *2       =  map_hashes
?                         ?  map_arrays
fetchall_hashref(1) *2    =  map

$sth->{NAME_lc/NAME}      =  $result->columns

*1 There's no fetch variant, but you can do { @{ $dbh->selectcol_arrayref('SELECT ...', { Slice => [] }) } }.

*2 To receive the keys (column names) lowercased, use $db->{FetchHashKeyName} = 'NAME_lc'. DBIx::Simple lower cases them by default.

*3 Or supply an argument, 'NAME_lc'.

*4 No, arrayref isn't a typo. When supplied an empty hash reference, DBI's fetchall_arrayref actually returns hashrefs. This DBI method does not support lower casing of keys, DBIx::Simple does.

Direct access

DBI                 DBIx::Simple

$dbh             =  $db->dbh
$sth->{$foo}     =  $result->attr($foo)

func             =  func

begin_work       =  begin_work
commit           =  commit
rollback         =  rollback
last_insert_id   =  last_insert_id
rows             =  rows

disconnect       ~  disconnect
finish           ~  finish

DBIx::Simple specific (?)

keep_statements
lc_columns
abstract (via SQL::Abstract)
select, insert, update, delete (via SQL::Abstract)
flat
hashes
map_arrays
map

LICENSE

There is no license. This software was released into the public domain. Do with it what you want, but on your own risk. The author disclaims any responsibility.

AUTHOR

Juerd Waalboer <juerd@cpan.org> <http://juerd.nl/>

SEE ALSO

DBI, DBIx::Simple