{
DataValueDescriptor judge;
if (judgeUserJDBCTypeId == -1)
judge = (DataValueDescriptor) new TypeId(judgeTypeFormatId, null).getNull();
else
judge = (DataValueDescriptor) new TypeId(judgeTypeFormatId, new UserDefinedTypeIdImpl()).getNull();
DataValueDescriptor minVal = v1;
if (v2 != null &&
(minVal.isNull() || judge.lessThan(v2, minVal).equals(true)))
minVal = v2;