Section 9.9.4 Section 9.9.1 Section 9.9.1 Section 9.9.4 PostgreSQL’s age() function Table 9-26 Section 9.9.4 Section 9.9.4 Section 9.9.1 Section 9.9.4 Section 9.9.4 PostgreSQL’s age() function Section 9.9.4 Section 9.9.4 Table 9-27 Table 9-28 Section 9.9.2 Section 9.9.4 Section 9.9.1 PostgreSQL’s age() function Section 9.9.4