DBIx::Simple::Comparison(3pm)

1DBIx::Simple::ComparisoUns(e3r)Contributed Perl DocumentDaBtIixo:n:Simple::Comparison(3)
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NAME

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

9       This is just a simple and inaccurate overview of what DBI things the
10       DBIx::Simple things represent, or the other way around.
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12       This document can be useful to find the foo equivalent of bar.
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14       "?" means that DBI doesn't have an equivalent or that I couldn't find
15       one.
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17       "=" means that DBIx::Simple provides a direct wrapper to the DBI
18       function.
19
20       "~" means that DBIx::Simple's method does more or less the same, but
21       usually in a more high level way: context sensitive, combining things,
22       automatically taking care of something.
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24       Note that DBIx::Simple is a wrapper around DBI. It is not "better" than
25       DBI. In fact, DBIx::Simple cannot work without DBI.
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27       Using DBI directly is always faster than using DBIx::Simple's
28       equivalents. (For the computer, that is. For you, DBIx::Simple is
29       supposed to be faster.)
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31   Classes, common names
32        use DBI       ~  use DBIx::Simple
33
34        $DBI::errstr  =  DBIx::Simple->error
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36        DBI::db       ~  DBIx::Simple
37        $dbh          ~  $db
38        $dbh->errstr  =  $db->error
39
40        connect       ~  connect
41        connect       ~  new
42
43        DBI::st       ~  DBIx::Simple::Result
44        <undef>       ~  DBIx::Simple::Dummy
45        $sth          ~  $result
46
47   Queries
48       DBI
49
50        my $sth = $dbh->prepare_cached($query);
51        $sth->execute(@values);
52
53       ~ DBIx::Simple
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55        my $result = $db->query($query, $values);
56
57   Results
58        DBI                          DBIx::Simple
59
60        bind_columns              ~  bind
61
62        fetchrow_arrayref/fetch   =  fetch
63        fetchrow_array            ~  list
64        *1                        ~  flat
65        [@{fetchrow_arrayref}]    =  array
66        fetchall_arrayref         ~  arrays
67        fetchrow_hashref() *2*3   =  hash
68        fetchall_arrayref({}) *4  ~  hashes
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70        fetchall_hashref *2       =  map_hashes
71        ?                         ?  map_arrays
72        fetchall_hashref(1) *2    =  map
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74        $sth->{NAME_lc/NAME}      =  $result->columns
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76       *1 There's no fetch variant, but you can do "{ @{
77       $dbh->selectcol_arrayref('SELECT ...', { Slice => [] }) } }".
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79       *2 To receive the keys (column names) lowercased, use
80       "$db->{FetchHashKeyName} = 'NAME_lc'". DBIx::Simple lower cases them by
81       default.
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83       *3 Or supply an argument, 'NAME_lc'.
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85       *4 No, arrayref isn't a typo. When supplied an empty hash reference,
86       DBI's fetchall_arrayref actually returns hashrefs. This DBI method does
87       not support lower casing of keys, DBIx::Simple does.
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89   Direct access
90        DBI                 DBIx::Simple
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92        $dbh             =  $db->dbh
93        $sth->{$foo}     =  $result->attr($foo)
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95        func             =  func
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97        begin_work       =  begin_work
98        commit           =  commit
99        rollback         =  rollback
100        last_insert_id   =  last_insert_id
101        rows             =  rows
102
103        disconnect       ~  disconnect
104        finish           ~  finish
105
106   DBIx::Simple specific (?)
107        keep_statements
108        lc_columns
109        iquery (via SQL::Interp)
110        select, insert, update, delete (via SQL::Abstract)
111        abstract (via SQL::Abstract)
112        flat
113        hashes
114        map_arrays
115        map
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AUTHOR

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

DESCRIPTION

AUTHOR

SEE ALSO