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I don't think it is a syntax problem of your prepared statement.
The error message is clear "ORA-20000: RDF_MATCH Query pattern must be a non-null compile-time constant."
Bind variable is not supported for SEM_MATCH.
Hi Zhe Wu,
Thank you for your response.
Do you mean that we cannot build a prepared statement with a parameter in the RDF_MATCH function. Would the only valid place be the "where clause" for such a parameter?
So, do you think that there is no reason to further examine this query?
Yes, I read the following document
where it says that we cannot bind a variable in the query attribute.
I would like to ask you if we can bind a variable in the filter attribute.
Thank you again,
I don't think so.