Vertica Meta-Functions
Vertica built-in (meta) functions access the internal state of Vertica and are used in SELECT queries with the function name and an argument (where required). These functions are not part of the SQL standard and take the following form:
SELECT <meta-function‑name>(<args>);
The query cannot contain other clauses, such as FROM or WHERE.
The behavior type of Vertica meta-functions is immutable.