Hola identsof.
Te sugerí usar la propiedad IsEmpty ya que
sqlDataset1.RecordCount > 0 es equivalente a
not SqlDataset1.IsEmpty.
En la ayuda de Delphi sobre
TSQLDataSet dice:
Cita:
...
Reading RecordCount will generate an exception if the dataset can’t determine the number of records. Do not read RecordCount if:- The dataset represents stored procedure.
- The dataset represents a query that contains parameters.
- The dataset represents a multi-table join.
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Saludos.
