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87bfcf91e9
``pg_catalog.pg_table_is_visible(c.oid)``, rather than testing for an exact schema match, when the schema name is None; this so that the method will also illustrate that temporary tables are present. Note that this is a behavioral change, as Postgresql allows a non-temporary table to silently overwrite an existing temporary table of the same name, so this changes the behavior of ``checkfirst`` in that unusual scenario. fixes #3264