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532566ba1f
Fixed bug where a :class:`.Sequence` would be dropped explicitly before any :class:`.Table` that refers to it, which breaks in the case when the sequence is also involved in a server-side default for that table, when using :meth:`.MetaData.drop_all`. The step which processes sequences to be dropped via non server-side column default functions is now invoked after the table itself is dropped. Change-Id: I185f2cc76d2011ad4dd3ba9bde5d8aef0ec335ae Fixes: #4300