4.2. Value Expressions # 4.2.1. Column References 4.2.2. Positional Parameters 4.2.3. Subscripts 4.2.4. Field Selection 4.2.5. Operator Invocations 4.2.6. Function Calls …| PostgreSQL Documentation
20.11. Client Connection Defaults # 20.11.1. Statement Behavior 20.11.2. Locale and Formatting 20.11.3. Shared Library Preloading 20.11.4. Other Defaults 20.11.1. Statement Behavior …| PostgreSQL Documentation
9.21. Aggregate Functions # Aggregate functions compute a single result from a set of input values. The built-in general-purpose aggregate functions …| PostgreSQL Documentation