EXTRACT


Basic form

EXTRACT fg.

Effect

Writes all fields of the field group fg (see FIELD-GROUPS) as one record to a sequential dataset (paging). If a field group HEADER has been defined, its fields prefix each record to form a sort key. You can sort this dataset with SORT and process it with LOOP ... ENDLOOP. After this, EXTRACT cannot be execuuted again.

Note

As soon as the first dataset for a field group has been extracted with EXTRACT , the field group cannot be expanded using INSERT . The field group HEADER , in particular, cannot be expanded after the first EXTRACT (regardless of field group).

Note

Runtime errors





Index
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