4.1. Lexical Structure # 4.1.1. Identifiers and Key Words 4.1.2. Constants 4.1.3. Operators 4.1.4. Special Characters 4.1.5. Comments 4.1.6. Operator Precedence …| PostgreSQL Documentation
CREATE FUNCTION CREATE FUNCTION — define a new function Synopsis CREATE [ OR REPLACE ] FUNCTION name ( [ [ …| PostgreSQL Documentation