如何搜索字符串中的所有表和所有领域?(How to search all tables and al

2019-10-22 20:58发布

我要搜索各个领域为用户提供的值包含输入的关键词数据库中的所有表和显示记录英寸 事情是这样的:

FOR EACH _file WHERE (NOT _file-name   BEGINS "_" AND NOT _file-name  BEGINS "sys") 
    NO-LOCK:

    FOR EACH _field OF _file  
        NO-LOCK:

        ASSIGN
            ttable = _file._file-name 
            tfield = _field._field-name .

        FOR EACH &ttable WHERE ttable.tfield MATCHES "urpon frisbee " 
            NO-LOCK :

            MESSAGE "hai"
                VIEW-AS ALERT-BOX INFO BUTTONS OK.
            DISPLAY _file._file-name .
        END.

    END.
END.

Answer 1:

你想学习“动态查询”。

procedure x:

  define input parameter tbl as character no-undo.
  define input parameter fld as character no-undo.
  define input parameter xyz as character no-undo.

  define variable qh as handle no-undo.
  define variable bh as handle no-undo.
  define variable fh as handle no-undo.

  create buffer bh for table tbl.
  create query qh.
  qh:set-buffers( bh ).
  qh:query-prepare( "for each " + tbl ).
  qh:query-open.

  qh:get-first( no-lock ).
  do while qh:query-off-end = no:
    fh = bh:buffer-field( fld ).
    if fh:buffer-value = xyz then  /* needs special handing if there are array fields in the db ... */
      do:
        display tbl fld bh:recid fh:buffer-value.
        pause.
      end.
    qh:get-next( no-lock ).
  end.

  delete object bh.
  delete object qh.

  return.

end.

for each _file no-lock where not _hidden:

  for each _field no-lock of _file:

    if _data-type <> "character" then next.  /* skip non-char fields */

    run x ( _file-name, _field-name, "urpon frisbee" ).

  end.

end.


文章来源: How to search all tables and all fields for a string?