1Attean::AggregateExpresUssieorn(C3o)ntributed Perl DocumAetntteaatni:o:nAggregateExpression(3)
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NAME

6       Attean::AggregateExpression - Representation of aggregate expression
7       trees
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VERSION

10       This document describes Attean::AggregateExpression version 0.022
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DESCRIPTION

13       The Attean::AggregateExpression class represents an expression tree
14       where the root node is an aggregate operation (e.g. SUM(?a) or
15       COALESCE(?a/?b, ?c, 0)).
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ROLES

18       This role consumes the Attean::API::AggregateExpression role.
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ATTRIBUTES

21       The following attributes exist:
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23       "operator"
24           The name of the aggregate operator, from the allowable set: COUNT,
25           SUM, MIN, MAX, AVG, GROUP_CONCAT, SAMPLE.
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27       "scalar_vars"
28           A HASH reference of scalar variables. The only scalar variable
29           defined for SPARQL 1.1 is 'seperator', a string separator used with
30           the GROUP_CONCAT aggregate.
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32       "distinct"
33           A boolean indicating whether the aggregate should operate over
34           distinct term sets, or full multisets.
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36       "variable"
37           A Attean::API::Variable object which will be bound to the produced
38           aggregate value in results.
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BUGS

41       Please report any bugs or feature requests to through the GitHub web
42       interface at <https://github.com/kasei/attean/issues>.
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SEE ALSO

AUTHOR
46       Gregory Todd Williams  "<gwilliams@cpan.org>"
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49       Copyright (c) 2014--2019 Gregory Todd Williams.  This program is free
50       software; you can redistribute it and/or modify it under the same terms
51       as Perl itself.
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55perl v5.28.1                      2019-03-21    Attean::AggregateExpression(3)



        

    


            
        

        

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