DBIx::Class::Storage::DBI::ADO::Microsoft_SQL_Server(3) User Contributed Perl DocumentationDBIx::Class::Storage::DBI::ADO::Microsoft_SQL_Server(3)

NAME

       DBIx::Class::Storage::DBI::ADO::Microsoft_SQL_Server - Support for Microsoft SQL Server via DBD::ADO

SYNOPSIS

       This subclass supports MSSQL server connections via DBD::ADO.

DESCRIPTION

       The MSSQL specific functionality is provided by DBIx::Class::Storage::DBI::MSSQL.

EXAMPLE DSN

	 dbi:ADO:provider=sqlncli10;server=EEEBOXSQLEXPRESS

CAVEATS

   identities
       "_identity_method" is set to @@identity, as "SCOPE_IDENTITY()" doesn't work with DBD::ADO. See "IMPLEMENTATION NOTES" in
       DBIx::Class::Storage::DBI::MSSQL for caveats regarding this.

   truncation bug
       There is a bug with MSSQL ADO providers where data gets truncated based on the size of the bind sizes in the first prepare call:

       <https://rt.cpan.org/Ticket/Display.html?id=52048>

       The "ado_size" workaround is used (see "ADO Providers" in DBD::ADO) with the approximate maximum size of the data_type of the bound column,
       or 8000 (maximum VARCHAR size) if the data_type is not available.

       Please report problems with this driver and send patches.

   LongReadLen
       "LongReadLen" is set to "LongReadLen * 2 + 1" on connection as it is necessary for some LOB types. Be aware of this if you localize this
       value on the $dbh directly.

   binary data
       Due perhaps to the ado_size workaround we use, and/or other reasons, binary data such as "varbinary" column data comes back padded with
       trailing "NULL" chars.  The Cursor class for this driver (DBIx::Class::Storage::DBI::ADO::Microsoft_SQL_Server::Cursor) removes them, of
       course if your binary data is actually "NULL" padded that may be an issue to keep in mind when using this driver.

   uniqueidentifier columns
       uniqueidentifier columns come back from ADO wrapped in braces and must be submitted to the MSSQL ADO driver wrapped in braces. We take care
       of this transparently in this driver and the associated Cursor class (DBIx::Class::Storage::DBI::ADO::Microsoft_SQL_Server::Cursor) so that
       you don't have to use braces in most cases (except in literal SQL, in those cases you will have to add the braces yourself.)

   fractional seconds
       Fractional seconds with DBIx::Class::InflateColumn::DateTime are not currently supported, datetimes are truncated at the second.

AUTHOR

       See "AUTHOR" in DBIx::Class and "CONTRIBUTORS" in DBIx::Class.

LICENSE

       You may distribute this code under the same terms as Perl itself.

perl v5.16.2							    2012-08-23		   DBIx::Class::Storage::DBI::ADO::Microsoft_SQL_Server(3)