add_data

Description:

[ Version ( since = "5.0" ) ]
public bool add_data (DataPivotAggregate aggregate_type, string field, string? alias) throws Error

Specifies that field has to be included in the analysis.

field is a field specification with the following accepted syntaxes:

a column name in the source data model (see gda_data_model_get_column_index); or
an SQL expression involving a column name in the source data model, for examples:
```
price
firstname || ' ' || lastname
nb BETWEEN 5 AND 10
```

It is also possible to specify several fields to be added, while separating them by a comma (in effect still forming a valid SQL syntax).

this	a DataPivot object
aggregate_type	the type of aggregate operation to perform
field	the field description, see below
alias	the field alias, or `null`

true if no error occurred