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doc: write about plugin and command_version in summary section
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kenhys committed Apr 28, 2015
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10 changes: 5 additions & 5 deletions doc/source/reference/functions/vector_size.rst
Expand Up @@ -15,17 +15,17 @@ Summary

``vector_size`` returns the value of vector column size.

Use ``--command_version 2`` to enable this feature.
To enable this function, register ``functions/vector`` plugin by following the command::

plugin_register functions/vector

Then, use ``vector_size`` function with ``--command_version 2`` option.

Syntax
------

``vector_size`` requires one argument - ``target``.

To enable this function, register ``functions/vector`` plugin by following the command::

plugin_register functions/vector

::

vector_size(target)
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