Sorting on time column is giving error in 3.1 endeca

Question

Hi All,
When I am doing sorting on event time column I am getting below error:
An error occurred while executing query: exception encountered while executing external function 'internal:navigation-query', caused by error endeca-err:MDEX0001 : Invalid input : Error in EQL Query: - In statement "_$Records_1385576435829": In ORDER BY clause: ORDER BY clauses may refer only to attributes defined in the same statement; "EVENT_TIMEYEAR" is not
I am not sure what this error is.What should be done to remove this or should I remove sorting on this column?
Thanks,
Amrit

Answer 1

Amrit, it is possibly the changed treamment of ARB.
What kind of error are you getting for those columns that are erroring?
Please see this topic from the Endeca Server 7.6.x Migration Guide which highlights the differences in EQL (Endeca Query Language), that took place in this release:
http://docs.oracle.com/cd/E40521_01/server.760/es_migration/toc.htm#Endeca%20Query%20Language%20changes
You will see the following: (quoting from the linked documentation):
For EQL 7.6.x, the ARB,COUNT, andCOUNTDISTINCT functions have been updated to work with multi-assign attributes.You will also see that "In 7.6, an implicit ARB is no longer added. That is, a SELECT of non-aggregate attributes is no longer allowed".
Also, see the following doc, about the ARB function: http://docs.oracle.com/cd/E40521_01/server.760/es_eql/toc.htm#ARB
In this doc, it is stated:
ARB works as follows:
For a single-assign attribute,ARBfirst discards all NULL values and then selects an arbitrary but consistent value from the remaining non-NULL values. If the attribute has no non-NULL values, then NULL is returned.
For a multi-assign attribute,ARBlooks at all of the rows in the group (including those with empty sets) and selects the set value from one of the rows. In other words, empty sets and non-empty sets are treated equally. This means that because the selection is arbitrary, the returned set value could be an empty set. TheARBreturn type is the same as its argument type: if attribute x is anmdex:long-set, then so is ARB(x). If the attribute has no non-NULL values, then the empty set is returned.