sequelize migration delete enum col and want that col back occur error
ERROR: type "enum_xxx_status" already exist
reason：
Dropping an enum column does not drop the enum itself. Postgre issue
https://github.com/sequelize/sequelize/issues/8859
solution：
my solution: dont use sequelize migration:create ,add the col to create model migration.
sequelize migration delete enum col and want that col back occur error
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sequelize migration delete enum col and want that col back occur error
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