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Document that LO64 is only available on Py 64 builds

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Daniele Varrazzo 2015-02-08 02:21:22 +00:00
parent f15e9d0cc8
commit 54ebf90fc6
1 changed files with 7 additions and 5 deletions
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doc/src/usage.rst
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@ -902,15 +902,17 @@ using the |lo_import|_ and |lo_export|_ libpq functions.
.. versionchanged:: 2.6
added support for large objects greated than 2GB. Note that the support is
enabled only if both these conditions are verified:
enabled only if all the following conditions are verified:
- the extension was built against libpq at least 9.3 (you can check if
`psycopg2.__version__` contains the ``lo64`` flag);
- the Python build is 64 bits;
- the extension was built against at least libpq 9.3;
- the server version is at least PostgreSQL 9.3
(`~connection.server_version` must be >= ``90300``).
If the contitions are not met several `!lobject` methods will fail if the
arguments exceed 2GB.
If Psycopg was built with 64 bits large objects support (i.e. the first
two contidions above are verified), the `psycopg2.__version__` constant
will contain the ``lo64`` flag. If any of the contition is not met
several `!lobject` methods will fail if the arguments exceed 2GB.