我们不经常使用convert text，这里简单介绍一些它的用法

CONVERT TEXT text INTO SORTABLE CODE hex. 

将text转换为16进制数值保存在hex变量中。

它主要是用在table较大，并且要经常进行排序的情况下。

用的时候注意,text必须是c或者string类型，hex必须是x或者xstring类型,如果hex是x类型则长度至少是24*length(text)-24,当然这个最小长度可能根据操作系统的不同而有所不同

DATA: BEGIN OF text_line, 
        sort_indx TYPE xstring, 
        text      TYPE string, 
      END OF text_line, 
      text_tab LIKE HASHED TABLE OF text_line 
               WITH UNIQUE KEY sort_indx. 

text_line-text = `Muller`. 
PERFORM fill_text_tab. 
text_line-text = `Möller`. 
PERFORM fill_text_tab. 
text_line-text = `Moller`. 
PERFORM fill_text_tab. 
text_line-text = `Miller`. 
PERFORM fill_text_tab. 

SORT text_tab BY text. 
PERFORM write_text_tab. 

SET LOCALE LANGUAGE 'D'. 
SORT text_tab BY sort_indx. 
PERFORM write_text_tab. 

FORM fill_text_tab. 
  CONVERT TEXT text_line-text 
          INTO SORTABLE CODE text_line-sort_indx. 
  INSERT text_line INTO TABLE text_tab. 
ENDFORM. 

FORM write_text_tab. 
  FIELD-SYMBOLS <line> LIKE text_line. 
  LOOP AT text_tab ASSIGNING <line>. 
    WRITE / <line>-text. 
  ENDLOOP. 
  SKIP. 
ENDFORM.