Class SqlReturnTypeInferenceChain

  • All Implemented Interfaces:

    public class SqlReturnTypeInferenceChain
    extends java.lang.Object
    implements SqlReturnTypeInference
    Strategy to infer the type of an operator call from the type of the operands by using a series of SqlReturnTypeInference rules in a given order. If a rule fails to find a return type (by returning NULL), next rule is tried until there are no more rules in which case NULL will be returned.