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Three different pointer types are used for strings.
SQLCHAR pointer - used against ODBC driver
char pointer - used against erl_interface
byte pointer - used internally
SQLCHAR is 'unsigned char' while erl_interface is 'signed char'
byte pointer should probably not be used at all.
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This patch adds the extended_errors option to odbc:connect/2. When
enabled, this option alters the return code of ODBC operations that
produce errors to include the ODBC error code as well as the native
error code, in addition to the ODBC reason field which is returned by
default. The extended error information can be used to produce more
sophisticated error handling than is possible with the standard ODBC
Reason alone.
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Support atom 'null' in odbc:param_query as database NULL value
Fix "ODBC: received unexpected info:{tcp_closed, ...}" when connection is terminating.
Fix possible access violation with 64bit ODBC.
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Loopback address constants are used when connecting the c-side
to the erlang-side over local socket API avoiding getaddrinfo problems,
and the {ip, loopback} option is added as a listen option on the erlang-side.
Also cleaned up the TIME_STAMP contribution.
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Now supports SQL_TYPE_TIMESTAMP on the format {{YY, MM, DD}, {HH, MM, SS}}.
Thanks to Juhani Ränkimies.
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ODBC now handles the types SQL_WCHAR and SQL_WVARCHAR. ODBC also has a new
connection option to return all strings as binaries and also expect strings
to be binaries in the param_query function. This provides some but not a
full unicode support.
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