Assuming the queries and the underlying data storage used remain the same then 
Jena will likely generate results in a consistent manner

BUT you should never rely upon this.  The only way to guarantee the behaviour 
you want is to provide an explicit ORDER BY clause

For example adding an extra triple pattern to your query could cause the 
optimizer to execute your query differently leading to a different ordering of 
results.  Similarly internal changes to improve the optimizer can cause 
execution to be different when you change Jena versions

Rob

On 06/12/2021, 13:16, "[email protected]" <[email protected]> 
wrote:



    Hello
    I have to use limit and offset on a sparql query run on Jena
    Fuseki to get paginated results.

    But reading the w3c documentation I
    find:
    _"OFFSET CAUSES GENERATED SOLUTIONS TO START AFTER THE SPECIFIED
    NUMBER OF SOLUTIONS. AN OFFSET OF ZERO HAS NO EFFECT._
    _USING LIMIT AND
    OFFSET TO SELECT DIFFERENT SUBSETS OF QUERY SOLUTIONS WILL NOT BE USEFUL
    UNLESS THE ORDER IS MADE PREDICTABLE USING ORDER BY "._
    Also on
    stackoverflow there are the same
    indications:
    https://stackoverflow.com/questions/55146844/offset-in-sparql

    However,
    assuming there will be _NO UPDATES_ on the dataset but only reads, can
    I avoid the ORDER BY clause?
    I have done various tests without ORDER BY
    and the results seem consistent. I would like to avoid the ORDER BY
    clause because I slow down the query a lot.

    Thanks




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