rinace,

Нет не изменится.
queryid это хеш от parse tree (еще сильно до плана).

Since the queryid hash value is computed on the post-parse-analysis representation of the queries, the opposite is also possible: queries with identical texts might appear as separate entries, if they have different meanings as a result of factors such as different search_path settings.

--
Maxim Boguk
лучшая поддержка PostgreSQL: dataegret.ru