Defines or undefines a topology query.
(tpm_qrysettoponame toponame)
Returns T or nil.
| toponame | Name of topology to query (string) or nil |
This function determines whether the current query is a topology query or a standard data extension query as follows:
- If the toponame argument is nil, the current query becomes a standard data extension query.
- If the toponame argument is a name, the current query becomes a topology query. But if you specify a topology that does not exist, a subsequent call to ade_qryexecute returns nil.