@hackage HDBC-odbc1.0.1.0

Welcome to HDBC, Haskell Database Connectivity.

This package provides a database backend driver for ODBC. You should be able to use any ODBC front-end with it.

Please see HDBC itself for documentation on use. If you don't already have it, you can browse this documentation at http://darcs.complete.org/hdbc/doc/index.html.

This package provides one function in module Database.HDBC.ODBC:

{- | Connect to an ODBC server.

For information on the meaning of the passed string, please see:

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/odbc/htm/odbcsqldrivers.asp

An example string is:

"DSN=hdbctest1"

-} connectODBC :: String -> IO Connection

DIFFERENCES FROM HDBC STANDARD

None known at this time.

MYSQL NOTE

Important note for MySQL users:

Unless you are going to use InnoDB tables, you are strongly encouraged to set

Option = 262144

in your odbc.ini (for Unix users), or to disable transaction support in your DSN setup for Windows users.

If you fail to do this, the MySQL ODBC driver will incorrectly state that it supports transactions. dbTransactionSupport will incorrectly return True. commit and rollback will then silently fail. This is certainly /NOT/ what you want. It is a bug (or misfeature) in the MySQL driver, not in HDBC.

You should ignore this advice if you are using InnoDB tables.

PREREQUISITES

Before installing this package, you'll need to have HDBC 0.99.2 or above installed. You can download HDBC from http://quux.org/devel/hdbc.

You'll need either GHC 6.4.1 or above, or Hugs 2005xx or above. If you're using Hugs, you'll also need cpphs (see http://www.cs.york.ac.uk/fp/cpphs/ if you don't already have it).

INSTALLATION

The steps to install are:

1. Examine HDBC-odbc.cabal and edit the include-dirs line to point to your local ODBC installation. If necessary, uncomment and edit the extra-lib-dirs line to point to your local ODBC installation.

2. ghc --make -o setup Setup.lhs

3. ./setup configure

4. ./setup build

5. ./setup install (as root)

If you're on Windows, you can omit the leading "./".

USAGE

To use with hugs, you'll want to use hugs -98.

To use with GHC, you'll want to use:

-package HDBC -package HDBC-odbc

Or, with Cabal, use:

Build-Depends: HDBC>=0.99.2, HDBC-odbc

This package has been tested with unixODBC.

-- John Goerzen January 2006