Dear All,
I ran the following explain SPARQL command. However, I am unable to
understand the output of explain. Can someone please explain me the output?
(I mean it is difficult to understand as to what is meant by RDF_QUAD_POGS
1 rows(s_1_4_t0.S, s_1_4_t0.O) and 0: c1 := Call __ro2sq
(s_1_4_t0.O))
SQL> explain('sparql select ?a?c1?c2 where{?a <http://dbpedia.org/b1> ?c1.
?a <http://dbpedia.org/b> ?c2}');
REPORT
VARCHAR
_______________________________________________________________________________
{
RDF_QUAD_POGS 1 rows(s_1_4_t0.S, s_1_4_t0.O)
inlined P = #/b1
RDF_QUAD_POGS 1 rows(s_1_4_t1.O)
inlined P = #/b S = k_s_1_4_t0.S
After code:
0: c1 := Call __ro2sq (s_1_4_t0.O)
5: a := Call __id2in (s_1_4_t0.S)
10: c2 := Call __ro2sq (s_1_4_t1.O)
15: BReturn 0
Select (a, c1, c2)
}
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