Class SqlReturnTypeInferenceChain

All Implemented Interfaces:

public class SqlReturnTypeInferenceChain extends 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.