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by nasalgoat 2835 days ago
Here's a real world example - I cannot use pg_upgrade because I have PostGIS installed and you cannot use different versions of PostGIS when upgrading, but I cannot install the older version in pg10.

We had to go to a slony hack (and put auto increment columns on a lot of tables temporarily) because of that.

So he's totally right, the upgrade path is not easy.