Browse Benchmarks
Benchmark ::implicit_grouping_gencom_both : Corelated nested query with aggregate function in the return clause.
The correlation predicate performs general comparison on two sequence-valued
arguments.
(submitted at 2006-11-24) |
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| Authors: |
Norman May (University of Mannheim) |
| Categories: |
XQuery,
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| Target: |
All systems |
| Engine type: |
persistent-storage main-memory |
| Measure: |
The measure targets the total execution time.
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Result unit: |
Milliseconds |
| Query: |
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The naive evaluation of this query evaluates in nested-loops.
This results in a quadratic increase in excution time when the document size is increased.
More efficient evaluation strategies scale better.
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Syntax: |
for $b in doc("bib.xml")//book
return
<book-editor>
<book/>
{ count(for $c in doc("bib.xml")//book
where $b/author = $c/editor
return $c)
}
</book-editor>
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Language: |
XQuery 1.0 |
| Document: |
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| The document creates a document that conforms to the DTD used for the XQuery Use Case XMP. |
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Generator: |
Toxgene and xmp.tsl |
| Parameters: |
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Parameter
num_books:
The number of books, authors, reviews, prices.
This is the main scaling parameter
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This parameter characterizes the: |
doc |
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Unit: |
None. |
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Values: |
100 1000 10000 |
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Distribution: |
uniform |
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Scale: |
ordinal |
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Parameter
num_authors_per_book:
The number of authors per book. |
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This parameter characterizes the: |
doc |
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Unit: |
None |
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Values: |
2 5 10 |
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Distribution: |
uniform |
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Scale: |
ordinal |
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| Methodology: |
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Running scenario: queryScale
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Test the influence of the document size (which mainly depends on
parameter num_books) on the query execution time.
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| Parameter instantiation: |
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Name |
Value(s) |
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num_books |
100
,
1000
,
10000 |
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Download the micro-benchmark:
[XML]
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