structure.sql created if schema_format = :sql is incorrect if postgres schemas are used.

[QuinnHarris]

The structure.sql dump file created by the postgres database dump tool does not leave the search_path paramater in a predictable state if the database contains different schemas (other than public). Accordingly the statements to insert the migration rows appended to the structure.sql might not work if the search_path doesn't include the public schema.

This produces the following error

ERROR: relation "schema_migrations" does not exist

The following monkey patch fixes this problem for postgres

module SequelRails
  class Migrations
    class << self
      alias_method :dump_schema_information_orig, :dump_schema_information

      def dump_schema_information(opts = {})
        if opts.fetch :sql
          "SET search_path = public, pg_catalog;\n"
        else
          ''
        end + dump_schema_information_orig(opts)
      end
    end
  end
end

[JonathanTron]

Thanks for reporting the issue, please test if it works for you so I can release a new version.