This document discusses SQL functions and operators. It provides examples of numeric, date, string and text functions. Numeric functions include ABS, CEIL, FLOOR, TRUNC, ROUND and more. Date functions include SYSDATE, ADD_MONTHS, MONTHS_BETWEEN. String functions include UPPER, LOWER, LENGTH, SUBSTR. Operators covered are arithmetic (+,-, etc.), comparison (=, <, etc.), and logical (OR, AND, NOT). Examples are given of how to use each function and operator in SQL queries and updates.