_Field表正在进行4GL数据库

Question

Which is the field in this table which will give information of table to which field of _field belongs. for example say _Field is having one record with _field-name = 'XYZ', how can i identify to which table this XYZ field belongs?

Answer 1

The RecordID (RECID) of the _file table is stored in a field in the _filed table.

FOR EACH _file NO-LOCK, EACH _field NO-LOCK WHERE _field._file-recid = RECID(_file):

    DISPLAY _file._file-name _field._field-name.
END.

Or utilize the primary index in the query using the "OF" operator:

FOR EACH _file NO-LOCK, EACH _field NO-LOCK OF _file:

    DISPLAY _file._file-name _field._field-name.
END.

Answer 2

它通过_File-recid字段链接到_File表。