# Package adql.query.operand.function

- Class Summary
  Class | Description
  --- | ---
  ADQLFunction | Represents any kind of function.
  DefaultUDF | It represents any function which is not managed by ADQL.
  MathFunction | It represents any basic mathematical function.
  SQLFunction | It represents any SQL function (COUNT, MAX, MIN, AVG, SUM, etc...).
  UserDefinedFunction | Function defined by the user (i.e.

- Enum Summary
  Enum | Description
  --- | ---
  MathFunctionType | All types of managed mathematical functions.
  SQLFunctionType | All the types of SQL functions (COUNT, SUM, AVG, etc...).