NAME
DBIx::Class::Storage::DBI::ODBC::ACCESS - Support specific to MS Access over ODBC
DESCRIPTION
This class implements support specific to Microsoft Access over ODBC.
It is a subclass of DBIx::Class::Storage::DBI::ODBC and DBIx::Class::Storage::DBI::ACCESS, see those classes for more information.
It is loaded automatically by DBIx::Class::Storage::DBI::ODBC when it detects a MS Access back-end.
This driver implements workarounds for IMAGE
and MEMO
columns, and DBIx::Class::InflateColumn::DateTime support for DATETIME
columns.
EXAMPLE DSN
dbi:ODBC:driver={Microsoft Access Driver (*.mdb, *.accdb)};dbq=C:\Users\rkitover\Documents\access_sample.accdb
TEXT/IMAGE/MEMO COLUMNS
Avoid using TEXT
columns as they will be truncated to 255 bytes. Some other drivers (like ADO) will automatically convert TEXT
columns to MEMO
, but the ODBC driver does not.
IMAGE
columns work correctly, but the statements for inserting or updating an IMAGE
column will not be cached, due to a bug in the Access ODBC driver.
MEMO
columns work correctly as well, but you must take care to set LongReadLen to $max_memo_size * 2 + 1
. This is done for you automatically if you pass LongReadLen in your connect_info; but if you set this attribute directly on the $dbh
, keep this limitation in mind.
FURTHER QUESTIONS?
Check the list of additional DBIC resources.
COPYRIGHT AND LICENSE
This module is free software copyright by the DBIx::Class (DBIC) authors. You can redistribute it and/or modify it under the same terms as the DBIx::Class library.