1 变量及对象声明
1.1 变量声明
Before：
DATA text TYPE string.
text = `...`.After：
DATA(text) = `...`.1.2 使用工作区
Before：
DATA wa like LINE OF itab.
LOOP AT itab INTO wa.
...
ENDLOOP.After：
LOOP AT itab INTO DATA(wa).
...
ENDLOOP.1.3 返回参数
Before：
DATA xml TYPE xstring.
CALL TRANSFORMATION ... RESULT XML xml.After：
CALL TRANSFORMATION ... RESULT XML DATA(xml).1.4 引用声明
Before：
DATA ixml TYPE REF TO if_ixml.
DATA stream_factory TYPE REF TO if_ixml_stream_factory.
DATA document TYPE REF TO if_ixml_document.
ixml = cl_ixml=>create( ).
stream_factory = ixml->create_stream_factory( ).
document = ixml->create_document( ).After：
DATA(ixml) = cl_ixml=>create( ).
DATA(stream_factory) = ixml->create_stream_factory( ).
DATA(document) = ixml->create_document( ).1.5 对象实例化
Before：
DATA lo_human TYPE REF TO class_human.
CREATE OBJECT lo_human EXPORTING NAME = 'TONY'.After：
lo_human = NEW class_human( name = ‘TONY’ ).2 内表操作
2.1 READ TABLE
2.1.1 Read Table with key
Before：
READ TABLE flight_schedules INTO DATA(flight_schedule)
WITH KEY carrid = 'AA'
connid = '0017'.After：
DATA(flight_schedule) = flight_schedules[ carrid = 'AA' connid = '0017' ].2.1.2 Read Table index
Before：
READ TABLE itab INDEX idx
INTO wa.After：
wa = itab[ idx ].2.1.3 Read Table using key
Before:
READ TABLE itab INDEX idx
USING KEY key
INTO wa.After：
wa = itab[ KEY key INDEX idx ].2.1.4 Read Table index
Before:
DATA idx type sy-tabix.
READ TABLE …
TRANSPORTING NO FIELDS.
idx = sy-tabix.After：
DATA(idx) =
line_index( itab[ … ] ).2.1.5 READ TABLE ASSIGNING
Before：
FIELD-SYMBOLS: <line> type …
READ TABLE itab
ASSIGNING <line>.After：
READ TABLE itab
ASSIGNING FIELD-SYMBOL(<line>).
