"ASSIGN COMPONENT 运用
REPORT AA.
TABLES:ZTFI029.
TYPES:BEGIN OF ZTFI029,
MANDT TYPE STRING,
KUNRG TYPE STRING,
MATNR TYPE STRING,
CHARG TYPE STRING,
Z_CPMC TYPE STRING,
Z_GGXH TYPE STRING,
Z_MEINS TYPE STRING,
END OF ZTFI029.
TYPES:BEGIN OF TY_DATA,
ROW TYPE I,
COL TYPE I,
TEST TYPE STRING,
NAME TYPE STRING,
END OF TY_DATA.
DATA:WA_DATA TYPE TY_DATA.
DATA:LT_DATA TYPE STANDARD TABLE OF TY_DATA.
DATA:LT_ZTFI029 TYPE STANDARD TABLE OF ZTFI029 WITH HEADER LINE.
DATA:LT_ZTFI029_01 TYPE STANDARD TABLE OF ZTFI029 WITH HEADER LINE.
DATA:NUM TYPE I.
DATA:NUM_01 TYPE STRING.
FIELD-SYMBOLS:<FS>.
LT_DATA = VALUE #( ( ROW = 1 COL = 1 TEST = 'KUNRG' NAME = 'AA' )
( ROW = 1 COL = 2 TEST = 'CHARG' NAME = 'BB' )
( ROW = 1 COL = 3 TEST = 'Z_CPMC' NAME = 'CC' )
( ROW = 1 COL = 4 TEST = 'Z_MEINS' NAME = 'DD' ) ).
LOOP AT LT_DATA INTO WA_DATA.
NUM = WA_DATA-COL.
ASSIGN COMPONENT NUM OF STRUCTURE LT_ZTFI029 TO <FS>. "如果没有指定固定的字段，则按照顺序进行指针的指向
<FS> = WA_DATA-NAME.
AT END OF ROW.
APPEND LT_ZTFI029.
CLEAR LT_ZTFI029.
ENDAT.
CLEAR:WA_DATA.
ENDLOOP.
LOOP AT LT_ZTFI029.
WRITE:/ 'MANDT为',LT_ZTFI029-MANDT,
'|KUNRG为',LT_ZTFI029-KUNRG,
'|MATNR为',LT_ZTFI029-MATNR,
'|CHARG为',LT_ZTFI029-CHARG,
'|Z_CPMC为',LT_ZTFI029-Z_CPMC,
'|Z_GGXH为',LT_ZTFI029-Z_GGXH,
'|Z_MEINS为',LT_ZTFI029-Z_MEINS.
ENDLOOP.
WRITE:/ SY-ULINE.
LOOP AT LT_DATA INTO WA_DATA.
NUM_01 = WA_DATA-TEST.
"如果指定了字段的名称，则按照字段名称进行指针的指向，
"理解为LT_ZTFI029_01的NUM_01字段指向了<FS>，下面<FS>赋值,即等于LT_ZTFI029_01的NUM_01字段赋值
ASSIGN COMPONENT NUM_01 OF STRUCTURE LT_ZTFI029_01 TO <FS>.
<FS> = WA_DATA-NAME.
AT END OF ROW.
APPEND LT_ZTFI029_01.
CLEAR LT_ZTFI029_01.
ENDAT.
CLEAR:WA_DATA.
ENDLOOP.
LOOP AT LT_ZTFI029_01.
WRITE:/ 'MANDT为',LT_ZTFI029_01-MANDT,
'|KUNRG为',LT_ZTFI029_01-KUNRG,
'|MATNR为',LT_ZTFI029_01-MATNR,
'|CHARG为',LT_ZTFI029_01-CHARG,
'|Z_CPMC为',LT_ZTFI029_01-Z_CPMC,
'|Z_GGXH为',LT_ZTFI029_01-Z_GGXH,
'|Z_MEINS为',LT_ZTFI029_01-Z_MEINS.
ENDLOOP.
WRITE:/ SY-ULINE.
