https://afs.github.io/substitute
This covers use in EXISTS but the mechanism is general and gives a
foundation for value-substitution.
Is it "join" - yes and no.
The pattern is rewritten to inject a "join" into each place the
variables can become bound. It is not a single join.
Andy
On 25/03/2021 09:05, Rob Vesse wrote:
ParameterizedSparqlString works by simple textual substitution into the
provided query string so you get a more specific query with your parameters
It does not have any relationship to joins.
I guess what you may be asking is how it compares to other methods for
providing initial bindings e.g. adding VALUES to a query which would be
evaluated as a Join? The answer there is that it isn't really a fair
comparison, a parameterized query vs one using VALUES might yield very
different query execution plans so perform very differently. As with all
queries it's going to depend on both your queries and your data
Rob
On 25/03/2021, 08:31, "Samita Bai / PhD CS Scholar @ City Campus"
<s...@iba.edu.pk> wrote:
Hello everyone,
I have used Parameterized SPARQL String for providing initial solution
bindings for query execution. I need to document my technique; can anyone help
me how can we compare Parameterized SPARQL String with joins?
Is Parameterized SPARQL string type of join or its entirely different?
Please someone help me out.
Regards,
Samita Bai
P : Please consider the environment before printing this e-mail
________________________________
CONFIDENTIALITY / DISCLAIMER NOTICE: This e-mail and any attachments may
contain confidential and privileged information. If you are not the intended
recipient, please notify the sender immediately by return e-mail, delete this
e-mail and destroy any copies. Any dissemination or use of this information by
a person other than the intended recipient is unauthorized and may be illegal.
________________________________
