[CALCITE-4424] Complete non-deterministic function (Jiatao Tao) #2284
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Current only SqlSequenceValueOperator override isDeterministic, func like RAND doesn't override isDeterministic, these func seems are not deterministic(the list comes from "isDynamicFunction"):
SqlAbstractTimeFunction
SqlBaseContextVariable
SqlCurrentDateFunction
SqlRandFunction
SqlRandIntegerFunction