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:program:`function_engine` is a low-level plugin that provides the
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interface for other function plugins.
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Drizzle depends on the :program:`function_engine` plugin. If it is not
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loaded, most commands will not work and ``DATA_DICTIONARY`` and
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``INFORMATION_SCHEMA`` will not be available.
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.. _function_engine_loading:
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This plugin is loaded by default and it should not be unloaded. See the
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.. _function_engine_version:
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This documentation applies to **function_engine 1.0**.
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To see which version of the plugin a Drizzle server is running, execute:
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SELECT MODULE_VERSION FROM DATA_DICTIONARY.MODULES WHERE MODULE_NAME='function_engine'