1RDF::Query::Algebra::AgUgsreergaCtoen(t3r)ibuted Perl DoRcDuFm:e:nQtuaetriyo:n:Algebra::Aggregate(3)
2
3
4

NAME

6       RDF::Query::Algebra::Aggregate - Algebra class for aggregate patterns
7

VERSION

9       This document describes RDF::Query::Algebra::Aggregate version 2.918.
10

METHODS

12       Beyond the methods documented below, this class inherits methods from
13       the RDF::Query::Algebra class.
14
15       "new ( $pattern, \@groupby, $alias =" [$op => $col] )>
16       "new ( $pattern, \@groupby, expressions =" [ $alias => [$op, \%options,
17       @cols] ] )>
18           Returns a new Aggregate structure. Groups by the named bindings in
19           @groupby, and returns new bindings for the named $alias for the
20           operation $op on column $col.
21
22           $op may be one of: COUNT, MIN, MAX, SUM.
23
24       "construct_args"
25           Returns a list of arguments that, passed to this class'
26           constructor, will produce a clone of this algebra pattern.
27
28       "pattern"
29           Returns the aggregates pattern.
30
31       "groupby"
32           Returns the aggregate's GROUP BY binding names.
33
34       "ops"
35           Returns a list of tuples as ARRAY refs containing "$alias, $op,
36           @cols".
37
38       "sse"
39           Returns the SSE string for this algebra expression.
40
41       "as_sparql"
42           Returns the SPARQL string for this algebra expression.
43
44       "as_hash"
45           Returns the query as a nested set of plain data structures (no
46           objects).
47
48       "type"
49           Returns the type of this algebra expression.
50
51       "referenced_variables"
52           Returns a list of the variable names used in this algebra
53           expression.
54
55       "potentially_bound"
56           Returns a list of the variable names used in this algebra
57           expression that will bind values during execution.
58
59       "definite_variables"
60           Returns a list of the variable names that will be bound after
61           evaluating this algebra expression.
62

AUTHOR

64        Gregory Todd Williams <gwilliams@cpan.org>
65
66
67
68perl v5.28.0                      2017-01-04 RDF::Query::Algebra::Aggregate(3)
Impressum