EPO - Discussion forums

Hello,

I ask you how does it work the CQL query cl, whose parameter is a CPC or IPC1-8 class (table 29 of the OPS manual).

In fact, this kind of query could have different implementation kinds, in the case that the parameter is a CPC and a ICP1-8 class as well, which is rather usual,

Thank you and best regards

Hi,

I am not sure if I understand your question correctly:

We offer many variations for classification searches, for only IPC, only CPC or for both together if you use CL for cases when CPC and IPC have the same combination of characters (like cl=C10J3).

Use depends on the needs of specific searches.

Regardas

Vesna for OPS

Hi,

thank you for your feedback. I understand from your answer that accepted arguments for the cl query are symbols belonging to CPC as well as to IPC, as in your example.

Hence my question becomes now: what happens if the cl argument belongs to CPC only? Is it rejected? Or it activates a CPC only search?

Thank you and best regards

Hi,

CL would be used if you have classification symbols and you don't exactly know if they are IPC or CPC-kind. You could simply put them into CL search and the result would be all classes, no matter if they are CPC or IPC. You get publications with one or the other. So, no, you would not get an error if application only holds IPC but no such CPC. CL would in fact correspond more to IPC OR CPC (not logical AND, more OR).

I hope this make is clearer

Regards,
Vesna for OPS