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[1.8.x] Removed unnecessary F() from Func expressions docs
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@ -217,7 +217,7 @@ or they can be used to build a library of database functions::
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class Lower(Func):
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function = 'LOWER'
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queryset.annotate(field_lower=Lower(F('field')))
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queryset.annotate(field_lower=Lower('field'))
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But both cases will result in a queryset where each model is annotated with an
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extra attribute ``field_lower`` produced, roughly, from the following SQL::
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