File: ChangeLog

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rodbc 1.1.3-1
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Version: 1.1-3 (2005-02-05, released)

	* Improve error messages for possible translation.

	* Fix typo in regexp in mangleColNames.

	* Add tests for native PostgreSQL on Windows.

	* Workaround problem with MyODBC 3.15-10 driver that needs
	  SQL_DRIVER_NOPROMPT when the window handle is null.


Version: 1.1-2 (2004-10-24, released)

	* Operating on a closed channel might crash in RODBCcheckchannel.

	* Report that DBase driver description in odbcConnectDbase was wrong.

	* Add settings for SQLite.


Version: 1.1-1 (2004-09-14, released)

	* Select the decimal point from Sys.localeconv.

	* Add an external reference and finalizer so open channels get
	  closed at the end of the session or when there is no R object
	  referring to them.

	* There is no longer a restriction to 16 channels.


Version: 1.1-0 (2004-09-06, test version)

	* Add NAMESPACE.

	* odbcConnect{Access,Dbase,Excel} allow a missing file name
	  (and will bring up a dialog box to search for it).

	* odbcGetInfo returns more information in a 8-element character
	  vector (based on an idea of Matthew Dowle).

	* The C code calls SQLExecuteDirect rather than SQLExecute and
	  does not call SQLCloseCursor, based on a problem report from
	  Matthew Dowle using MS SQLServer.  Repeated calls to
	  sqlGetResults now work.

	* New function sqlFetchMore.

	* Table names in Access with embedded spaces are mapped to the 
	  [name space] form which Access requires.

	* Table creation no longer removes _ from column names.

	* New functions get/setSqlTypeInfo and the typeInfo argument to
	  sqlSave allow users to specify the mapping from R types to DBMS
	  datatypes.  sqlSave also allows the specification of DBMS
	  datatypes by column.

	* It is now possible to write more than 255 chars to a field with
	  sqlSave and sqlUpdate.

	* Dates and timestamps are now read as 'Date' and 'POSIXct'
	  columns by sqlGetResults (unless as.is = TRUE for the column).


Version: 1.0-4 (2003-07-19, released)

	* RODBC.c: iodbc was not recognizing the SQLTCHAR cast

	* odbcClose.Rd, odbcConnect.Rd: tidy up


Version: 1.0-3 (2003-05-25, released)

	* RODBC.c: remove unneeded SQLCHAR cast


Version: 1.0-2 (2003-05-13, released)

	* Add inst/ directory and install README.

	* Allow reading of character fields up to 64K bytes (limited
	  as the driver may report silly sizes).

	* Note that convenience wrappers for Excel etc need
	  English-language drivers to be installed.


Version: 1.0-1 (2003-01-20, released)

	* If a character field is truncated when reading from a database,
	  an R warning is given.

	* There was no protection against writing more than 255 chars in a
	  character vector in sqlSave/sqlUpdate(fast=TRUE).  Now the first
	  255 characters are written and a warning given.


Version: 0.99-9 (2003-01-17, test version)

	* Testing with PostgreSQL revealed that
	  - attempting to create a table with a primary key resulted in
	    memory corruption inside the unixODBC PostgreSQL driver and
	  - the special columns in PostgreSQL are pseudo-columns, so ML's
	    stategy in sqlUpdate is doomed.

	* Added 'addPK' argument to sqlSave(), defaulting to FALSE, to
	  circumvent the above.  (The latest psqlodbc client behaves.)

	* Changed strategy in sqlUpdate().  Allow 'index' argument, and
	  otherwise look first for a primary key in the data frame, then
	  special columns, then "rownames".

	* Changed all C-level tests to allow for SQL_SUCCESS_WITH_INFO as
	  the return value is driver-dependent and psqlodbc was returning
	  SQL_SUCCESS_WITH_INFO from SQLExecute.


Version: 0.99-8 (2003-01-15, test version)

	* Result sets with no rows are now reported as 0-row data frames
	  and not regarded as an error (return value -1).

	* More consistent usage of errors, with new error code -2
	  indicating no data (that is no result from the query, not just
	  no rows available).  For example, failure to create a table in
	  sqlSave() is now a fatal error.

	* On Windows, convenience functions odbcConnectAccess(),
	  odbcConnectDbase() and odbcConnectExcel() based on suggestion of
	  Fan, <xiao.gang.fan1@libertysurf.fr>.

	* A 'channel' object contains a randomly generated ID, so even if
	  a channel has been closed and the slot reused, the original R
	  object will be declared invalid.

	* options("dec") is only set when RODBC is loaded if it is not
	  already set.

	* New function odbcCloseAll().

	* Improved documentation.  New README, move ML's to README.orig.


Version: 0.99-6 (2003-01-12, test version)

	* Migration to use .Call where appropriate.

	* 'channel' is now a classed object, with a print method and
	  all relevant information is recorded as attributes of the
	  object, and new function odbcReConnect() allows reconnection to
	  a saved 'channel' object.

	* New function odbcDriverConnect() provides an alternative
	  interface via ODBC driver connection strings. Under the Windows
	  GUI this allows interactive completion of connection strings
	  via standard ODBC dialog boxes.

	* Names of tables are no longer deparsed, so normal R
	  semantics apply and they should be quoted.

	* odbcNumRows now returns the number of rows, not a list.

	* odbcCaseFlag now returns character in all cases.

	* New argument 'believeNRows' to accommodate ORACLE (and also
	  sqlTypeInfo() calls on MySQL).

	* The limit on the number of channels was off by one.

	* sqlSave() and sqlFetch() now default to rownames = TRUE, that is
	  to include rownames in the table, and to use column 'rownames'
	  for the rownames if it exists.  It is possible to retrieve
	  columns other than the first as rownames, as documented (but not
	  working).

	* New 'safer' option to sqlSave(), which defaults to TRUE.

	* When sqlSave() creates a table and includes rownames, the rownames
	  are created as a primary key (where supported).

	* sqlUpdate() has a new 'tablename' argument and many internal
	  changes (e.g. implementing case changes): it is now operational.

	* sqlSave(fast=TRUE) and sqlUpdate() can now create database NULLs
	  even on MS Access, and character strings with value "NA" are no
	  longer automatically regarded as missing.  sqlUpdate() now has a
	  fast=FALSE method, and for both the fast methods avoid
	  converting numeric and integer columns to character.

	* odbcFetchRow() has been removed.

	* sqlCopy() is now implemented.

	* odbcFetchRows() now returns a list, and sqlFetchRows() only
	  returns a data frame, this being the most efficient storage.
	  SQL double, real, integer and smallint columns are transferred
	  directly to R numeric and integer columns (rather than being
	  converted to character and back again).

	* Function sqlDrop(), sqlColumns() and sqlPrimaryKeys() were not
	  respecting case-changing (although case-altering DBMSs usually
	  coped).

	* Various memory leaks have been plugged.

	* Improved documentation.


Version: 0.9-1 (release candidate 2, released to CRAN 2002-10-30)

	* Improved documentation


Version: 0.9-0 (release candidate 1)

	* New maintainer.

	* Bring up to date for R 1.6.0.

	* Several functions were not testing the case-switched version of
	  the table name: now integrated into new function odbcTableExists.

	* New function odbcGetInfo.

	* New function sqlTypeInfo.

	* sqlFetch now does work with Excel spreadsheets.


Version: 0.8-3

	* Minor changes to make documentation and examples
	  R CMD check compliant