For unixODBC, use ODBC version as defined by it (as of v2.2.14 it is 3.5).
This allows us to use newer features like SQL_DESC_OCTET_LENGTH (which
returns the number of bytes required to store the data). This fixes the issue
in #60616. If the newer version is not available, over-allocate to accomodate
4-byte Unicode characters for CHAR and VARCHAR datatypes (and their Wide
counterparts).
version.
Fixed a couple of failing tests.
The ODBC extension did not support WVARCHAR. WVARCHAR ends up being handled by
the default handler where vallen is set by the driver to the actual bytes
needed for the field. If it is larger than default-lrl then the output is
corrupted (reading past the buffer) because the return functions don't expect
that to happen. The patch add support to handle WVARCHAR just like a regular
VARCHAR.
(clara@zealworks.com).
# I haven't had time to completely test this patch, a few users have stated
# that it works well for them and a few others want to test with windows
# builds, hence the submission.
. Changed the configure/compile so that it doesn't "pollute" the INCLUDES
anymore and thus cause trouble with other extensions which
might use the same header files. (e.g. Informix)
. Separated the #include statements to own file so we don't get any
errors when compiling main/internal_functions.c
Keyur Govande