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Avoid duplicate column Error in Migration

/ Published in: Rails
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Add "rescue nil" to migration commands that you want the migration to try but don't care if it fails. Helpful for debugging migrations and helpful when you want to modify a previous migration, let's say add a column, and you don't want the remove column in the drop block to choke your reverse migration.

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  1. add_column :users, :ssn_part, :string rescue nil

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