/ 
DBD-Excel-0.03
River stage one • 2 direct dependents • 2 total dependents
/ DBD::Excel

NAME

DBD::Excel - A class for DBI drivers that act on Excel File.

This is still alpha version.

SYNOPSIS

use DBI;
$hDb = DBI->connect("DBI:Excel:file=test.xls")
    or die "Cannot connect: " . $DBI::errstr;
$hSt = $hDb->prepare("CREATE TABLE a (id INTEGER, name CHAR(10))")
    or die "Cannot prepare: " . $hDb->errstr();
$hSt->execute() or die "Cannot execute: " . $hSt->errstr();
$hSt->finish();
$hDb->disconnect();

DESCRIPTION

This is still alpha version.

The DBD::Excel module is a DBI driver. The module is based on these modules:

  • Spreadsheet::ParseExcel

    reads Excel files.

  • Spreadsheet::WriteExcel

    writes Excel files.

  • SQL::Statement

    a simple SQL engine.

  • DBI

    Of course. :-)

This module assumes TABLE = Worksheet. The contents of first row of each worksheet as column name.

Adding that, this module accept temporary table definition at "connect" method with "xl_vtbl".

ex. my $hDb = DBI->connect( "DBI:Excel:file=dbdtest.xls", undef, undef, {xl_vtbl => {TESTV => { sheetName => 'TEST_V', ttlRow => 5, startCol => 1, colCnt => 4, datRow => 6, datLmt => 4, } } });

For more information please refer sample/tex.pl included in this distribution.

Metadata

The following attributes are handled by DBI itself and not by DBD::Excel, thus they all work like expected:

Active
ActiveKids
CachedKids
CompatMode             (Not used)
InactiveDestroy
Kids
PrintError
RaiseError
Warn                   (Not used)

The following DBI attributes are handled by DBD::Excel:

AutoCommit

Always on

ChopBlanks

Works

NUM_OF_FIELDS

Valid after $hSt->execute

NUM_OF_PARAMS

Valid after $hSt->prepare

NAME

Valid after $hSt->execute; undef for Non-Select statements.

NULLABLE

Not really working, always returns an array ref of one's. Valid after $hSt->execute; undef for Non-Select statements.

These attributes and methods are not supported:

bind_param_inout
CursorName
LongReadLen
LongTruncOk

Additional to the DBI attributes, you can use the following dbh attribute:

xl_fmt

This attribute is used for setting the formatter class for parsing.

xl_dir

This attribute is used only with data_sources on setting the directory where Excel files ('*.xls') are searched. It defaults to the current directory (".").

Driver private methods

data_sources

The data_sources method returns a list of '*.xls' files of the current directory in the form "DBI:Excel:xl_dir=$dirname".

If you want to read the subdirectories of another directory, use

my($hDr) = DBI->install_driver("Excel");
my(@list) = $hDr->data_sources( 
                { xl_dir => '/usr/local/xl_data' } );
list_tables

This method returns a list of sheet names contained in the $hDb->{file}. Example:

my $hDb = DBI->connect("DBI:Excel:file=test.xls");
my @list = $hDb->func('list_tables');

TODO

More tests

First of all...

Type and Format

The current version not support date/time and text formating.

Joins

The current version of the module works with single table SELECT's only, although the basic design of the SQL::Statement module allows joins and the likes.

KNOWN BUGS

  • There are too many TODO things. So I can't determind what is BUG. :-)

AUTHOR

Kawai Takanori (Hippo2000) kwitknr@cpan.org

http://member.nifty.ne.jp/hippo2000/            (Japanese)
http://member.nifty.ne.jp/hippo2000/index_e.htm (English)

SEE ALSO

DBI, Spreadsheet::WriteExcel, Spreadsheet::ParseExcel, SQL::Statement

COPYRIGHT

Copyright (c) 2001 Kawai Takanori All rights reserved.

You may distribute under the terms of either the GNU General Public License or the Artistic License, as specified in the Perl README file.