If there are foreign keys on the tables, the system internally runs some SELECT FOR KEY SHARE queries on the referenced tables (the ones containing the primary or unique keys). You can get some multixacts that way too. -- Álvaro Herrera http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Training & Services
pgsql-general by date:
Соглашаюсь с условиями обработки персональных данных