ODBC binding for Ruby
---------------------

Wed Feb 15 2017 version 0.99998 released

	* minor update to compile with Ruby 2.4, thangs to Kevin Deisz
	* preset output vars before SQLColAttributes() call

Wed Apr 15 2015 version 0.99997 released

	* fixed bug (typo) when compiling with Ruby < 2.0

Wed Mar 25 2015 version 0.99996 released

	* when built for Ruby >= 2.0 release GVL for potentially
	  long running ODBC API functions, thanks Matt Conover
	  for initial implementation

Wed Mar 13 2013 version 0.99995 released

	* added ODBC::Database.use_sql_column_name= flag to switch
	  usage of SQLColAttributes(SQL_COLUMN_LABEL) to 
	  SQLColAttributes(SQL_COLUMN_NAME) on per connection basis

Sat Jan 15 2011 version 0.99994 released

	* fixed column key caching, thanks Sean Noonan for bug report

Fri Dec 24 2010 version 0.99993 released

	* fixed error reporting in Database.transaction method,
	  thanks Shane Emmons for bug report and testing

Thu Sep 16 2010 version 0.99992 released

	* ODBC::Statement.each/each_hash now output arrays when
	  invoked without block
	* column keys in result hashes now are cached/recycled Ruby strings
	* added ODBC::Database methods use_time/use_utc to directly
	  output Ruby Time/Date objects
	* added encoding support in the UTF8 variant for Ruby >= 1.9
	* added module constant ODBC::UTF8 to indicate variant of module
	* fixes for M$SQL server reporting zero column sizes
	  and unknown data types for varchar(strmax) columns
	* eliminated compiler warnings
	* use StringValueCStr instead of STR2CSTR (Ruby >= 1.9.1)
	* small change for decision when to use SQLGetData() loop

Sun Apr 25 2010 version 0.99991 released

	* detect HAVE_LONG_LONG for builds with unixODBC
	* UTF-8 coding/decoding fix for range 0x80..0xBF

Thu Feb 18 2010 version 0.9999 released

	* integrated Bosko Ivanisevic's fixes in ext/utf8/extconf.rb
	  and test/test.rb and test/utf8/test.rb

Fri Jan 15 2010 version 0.9998 released

	* documentation update
	* reorganized directory layout for making a gem

Wed May 20 2009 version 0.9997 released

	* added Chad Johnson's FreeTDS/MSSQL patch to prevent from
	  re-prepare of queries with SQL_VARCHAR parameters

Mon Feb 02 2009 version 0.9996 released

	* updates for Ruby > 1.8
	* added Stephen Veit's SQL_NO_TOTAL handling to improve
	  retrieving large SQL_C_BINARY data
	* fixes for SQLExecute/SQLExecDirect returning SQL_NO_DATA

Sat Apr 07 2007 version 0.9995 released

	* init.c: prefer libiodbc.so.2 over libiodbc.so and
	  libodbc.so.1 over libodbc.so and same logic for
	  the installer shared library
	* no exception thrown on stale HSTMT for ODBC::Statement.nrows

Mon Dec 25 2006 version 0.9994 released

	* improved doc on ODBC::Statement.*param*, ODBC::Parameter,
	  and related ODBCProc
	* added support for output/input-output parameters in queries,
	  methods ODBC::Statement.param_iotype/param_output_type/
	  param_output_size/param_output_value

Fri Sep 15 2006 version 0.9993 released

	* more tweaks in extconf.rb for --enable-dlopen'ed utf8 version
	  thanks Daigo Moriwaki for testing
	* eliminated warnings for installer functions 

Mon Sep 11 2006 version 0.9992 released

	* added parameter "column" in ODBC::Database::columns
	* intern most strings on module load
	* enhanced ODBC::Statement.fetch_hash et.al. to produce
	  intern'ed strings or fixnums as hash keys as requested
	  by Neville Burnell
	* handle SQL_NO_DATA for chunk-wise SQLGetData()
	* determine dynamically which API (UNICODE or ANSI) to
	  use for ODBC installer functions	
	* more 64 bit fixes
	* added missing SQLEndTran() in init.c

Sat Aug 05 2006 version 0.9991 released

	* fixed more SQLLEN vs SQLINTEGER issues and 64 bit warnings
	* bail out during extconf.rb when sql.h/sqlext.h is not
	  available as requested by Curt Sampson
	* fixed transaction logic ENV vs. DBC and use SQLEndTran()
	  for ODBCVER >= 0x0300, thanks Adam Harper for patch
	* detect SQL parameter strings containing '\0's and use
	  SQL_C_BINARY when appropriate as parameter types to support
	  BLOB data, thanks Daigo Moriwaki for report and testing
	* don't use dlopen()/GCC weak attributes on MacOSX

Wed Jun 28 2006 version 0.999 released

	* added ODBC::Column@autoincrement information
	* added init.c and extconf.rb logic for resolving iODBC/unixODBC
	  library dependencies at runtime using GCC weak attribute in
	  conjunction with dlopen(), this feature can be enabled/disabled
	  with "ruby extconf.rb --enable-dlopen"

Sun May 21 2006 version 0.998 released

	* added undocumented module methods ODBC::write_file_dsn and
	  ODBC::read_file_dsn
	* fixes in SQLConfigDataSource/SQLInstallerError detect/usage
	* added statement level option handling (SQLSetStmtOption),
	  ODBC::Database.newstmt, ODBC::Statement.prepare|run as
	  contributed by Carl Blakeley of OpenLink Software
	* eliminated most GCC 4.x warnings

Sun Dec 25 2005 version 0.997 released

	* 32/64 bit issues as pointed out by Lars Kanis
	* ODBC::Database.get_info implementation and constants, idea
	  and initial coding contributed by Tim Haynes of OpenLink Software
	* ODBC::Statement.param_type implemented as work around for
	  Ingres ODBC driver. Thanks Jon Chambers for idea and testing

Sun Nov 21 2004 version 0.996 released

	* use SQLInstallerError() for adddsn/confdsn/deldsn if available,
	  code contributed by Ryszard Niewisiewicz
	* retry SQLBindParameter() for SQL_VARCHAR when SQLDescribeParam()
	  doesn't work (e.g. on MS Jet Engine)
	* fixed crashes when SQLBindParameter failed in stmt_exec_int(),
	  as reported by Ryszard Niewisiewicz

Tue Sep 07 2004 version 0.995 released

	* fixed another buffer alignment bug fetching doubles on sparc,
	  thanks Dan Debertin for testing.

Wed Jul 14 2004 version 0.994 released

	* fixed ODBC::Database.new|connect so that 
	  ODBC::Database.new.drvconnect(string) works
	* fixed SQLTCHAR detect for Win32 in extconf.rb,
	  thanks to Pedro Luis Castedo Cepeda

Mon Jun 28 2004 version 0.993 released

	* use HAVE_TYPE_SQLTCHAR from extconf.rb for old iODBC versions
	* don't rb_define_alloc_func of dsn_new/drv_new for Ruby >= 1.8,
	  gives stack overflows, thanks to Pedro Luis Castedo Cepeda
	  for fixing
	* fixes for iODBC driver manager concerning SQLFetchScroll
	  availability (SQL state codes IM001 vs HYC000)
	* blob handling fix as suggested by Kaspar Schiess

Mon Mar 22 2004 version 0.992 released

	* fixed buggy UTF8->Unicode conversion code
	* fixed handling of uppercase column names in row hashes

Fri Dec 26 2003 version 0.991 released

	* use SQLConfigDataSourceW() in utf8 version
	* SQLError() is now always called after error/warning from
	  other ODBC API invokations in order to cleanup error
	  messages in driver manager/driver
	* tweaks for SQLColAttributes() problems as suggested
	  by Nathaniel Talbott <nathaniel@talbott.ws>
	* modified extconf.rb as suggestedb by <RNicz@fibernet.pl>
	* eliminated use of alloca() in utf8 converters
	* reworked to use Ruby 1.8 rb_define_alloc_func() API

Wed May 21 2003 version 0.99 released

	* no functional changes with respect to 0.98
	  but starting with 0.99 released under Ruby style license.

Thu May 08 2003 version 0.98 released

	* added utf8 version (-DUNICODE, -D_UNICODE for CFLAGS),
	  which generates odbc_utf.so, for build instructions
	  see README. Thanks Bosko Ivanisevic <ivanisev@sezampro.yu>
	  for ideas and testing.

Fri Apr 25 2003 version 0.97 released

	* align buffers for fetching scalar data (long, double et.al.)
	  to prevent alignment problems causing bus errors e.g. on sparc,
	  thanks sakazuki <QZS01353@nifty.ne.jp> for testing.

Wed Mar 19 2003 version 0.96 released

	* added fall back to SQLFetch() when SQLFetchScroll(SQL_FETCH_NEXT)
	  or SQLExtendedFetch(SQL_FETCH_NEXT) report IM001 error,
	  thanks Kiyonori Takeda <takeda@newsline.net> for testing.

Mon May 13 2002 version 0.95 released

	* doc updated
	* minor code cleanups
	* fixed ODBC::Database.run to properly accept blocks
	  as reported by Michael Neumann <neumann@s-direktnet.de>
	* added ODBC::Statement.more_results method as
	  requested by Chris Morris <chris.morris@snelling.com>

Thu Oct 11 2001 version 0.94 released

	* doc updated
	* fixed off-by-one bug in do_fetch function
	* added some more SQL_* constants
	* added ODBC::Database.special_columns method
	* added unique flag to ODBC::Database.indexes

Fri Sep 07 2001 version 0.93 released

	* doc updated
	* removed default column name conversion to upper case
	  as introduced in version 0.91
	* added ignorecase, ignorecase= methods for ODBC::Database
	  and ODBC::Statement as suggested by
	  Sean O'Halpin <sean.ohalpin@bamberforsyth.com>

Fri Aug 31 2001 version 0.92 released

	* ODBC::Parameter class and ODBC::Statement.make_proc method added
	* changes to support libiodbc-2.50 eg on Debian, thanks
	  Massimiliano Mirra <info@chromatic-harp.com> for testing
	* fixed typos in constant table (SQL_CP_* symbols, O_CONSTU macro)
	* if odbcinst.h not available, make dummy DSN config methods

Sat Aug 25 2001 version 0.91 released

	* handle non-unique keys in column name/result set hashes
	  by appending "#column-number" string
	* convert column names to uppercase if ODBC driver is
	  identifier case insensitive as suggested by
	  Elmar Sonnenschein <eso@esomail.de>
	* added cursorname method in Statement
	* added assignment methods for Environment/Database/Statement
	  options
	* taint strings
	* use SQLExecDirect() in Statement.run/do when no parameters in query

Wed Aug 15 2001 version 0.9 released

	* doc updated
	* added alloc/free and ODBC API call tracing
	  (compile-time, -DTRACING)
	* added array result for ODBC::Statement.columns
	* statements are now by default dropped before SQLDisconnect
	* rewrote resource tracking of environment, database connection
	  and statement objects due to crashes/hangs on Win32
	* improved constructors for data/time/timestamp objects
	* added clone methods for date/time/timestamp objects

Thu Jul 26 2001 version 0.8 released

	* minor doc update
	* added handling of block for ODBC::Statement.columns method
	* revised error reporting and SQLRETURN handling with
	  respect to SQL_SUCCESS_WITH_INFO, introduced info method
	  to get warnings of last ODBC API call. Change was required
	  to support MS SQL Server, thanks to correspondence with
	  David Moore <david.moore@uk.dealogic.com>.

Wed Jun 20 2001 version 0.7 released

	* minor doc update
	* some more test cases in fetching data
	* added some more fetch methods (fetch_many, fetch_all ...)
	* added more tests for conditional include of <windows.h>
	* again, fixes in parameter binding thanks to patches from
	  Steve Tuckner <sat@multitech.com>

Tue Jun 12 2001 version 0.6 released

	* reviewed parameter and column information handling
	* work around cases when SQLDescribeParam is not supported
	  by the selected ODBC driver
	* bug fixes in parameter binding

Sun Jun 10 2001 version 0.5 released

	* doc updated
	* added environment attribute setting/getting methods
	* eliminated alloca() in fetching data
	* added missing SQL_CHAR constant
	* fixed accessor methods for ODBC::(DSN|Driver|Column) as
	  suggested by Michael Neumann <neumann@s-direktnet.de>

Fri Jun 08 2001 version 0.4 released

	* Cygwin fixes thanks to Michael Neumann <neumann@s-direktnet.de>
	* minor optimizations
	* cleanup GC related functions

Sun May 27 2001 version 0.3 released

	* doc updated
	* win32 port (mswin32 working, mingw untested)
	* added types (ODBC::Date, ODBC::Time, ODBC::TimeStamp)
	* reworked module/class organization
	* major review

Thu May 17 2001 version 0.2 released

	* updated and improved doc
	* added fetch_hash, each_hash, column ODBCStmt methods
	* added more constants in ODBC class
	* added ODBCColumn class
	* added accessor for ODBC::error

Sun May 13 2001 version 0.1 released

	* initial release.