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Removed obsolete sentence in custom model field docs.
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@ -431,9 +431,7 @@ Django when the framework constructs the ``CREATE TABLE`` statements for your
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application -- that is, when you first create your tables. The methods are also
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called when constructing a ``WHERE`` clause that includes the model field --
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that is, when you retrieve data using QuerySet methods like ``get()``,
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``filter()``, and ``exclude()`` and have the model field as an argument. They
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are not called at any other time, so it can afford to execute slightly complex
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code, such as the ``connection.settings_dict`` check in the above example.
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``filter()``, and ``exclude()`` and have the model field as an argument.
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Some database column types accept parameters, such as ``CHAR(25)``, where the
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parameter ``25`` represents the maximum column length. In cases like these,
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