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Fixed #23043: alter_field drops defaults too
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@ -766,6 +766,16 @@ class BaseDatabaseSchemaEditor(object):
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"check": new_db_params['check'],
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}
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)
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# Drop the default if we need to
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# (Django usually does not use in-database defaults)
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if not self.skip_default(new_field) and new_field.default is not None:
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sql = self.sql_alter_column % {
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"table": self.quote_name(model._meta.db_table),
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"changes": self.sql_alter_column_no_default % {
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"column": self.quote_name(new_field.column),
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}
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}
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self.execute(sql)
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# Reset connection if required
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if self.connection.features.connection_persists_old_columns:
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self.connection.close()
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