internal table 的一些操作

最新推荐文章于 2024-11-11 15:14:00 发布

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本文详细介绍ABAP中内部表的使用方法，包括定义、填充、读取、修改及删除等基本操作，并演示了不同场景下的应用实例。

*internal table with work area

DATA: BEGIN OF LINE,
  COL1 TYPE I,
  COL2 TYPE I,
END OF LINE.
DATA ITAB like LINE occurs 10.
DO 2 TIMES.
  LINE-COL1 = SY-INDEX.
  LINE-COL2 = SY-INDEX ** 2.
  APPEND LINE TO ITAB.
ENDDO.
LOOP AT ITAB INTO LINE.
  WRITE: / LINE-COL1, LINE-COL2.
ENDLOOP.

*internal table with type
types: begin of tline,
  col1 type i,
  col2 type i,
end of tline.
types tItab type tline occurs 10.

data: dline type tline,
      dItab type tItab.
do 2 times.
  dline-col1 = sy-index.
  dline-col2 = sy-index ** 2.
  append dline to dItab.
enddo.
loop at dItab into dline.
  write: / dline-col1, dline-col2.
endloop.

skip.

*internal table without work area
DATA: BEGIN OF ITAB2 OCCURS 10,
      COL1 TYPE I,
      COL2 TYPE I,
      END OF ITAB2.
DO 2 TIMES.
  ITAB2-COL1 = SY-INDEX.
  ITAB2-COL2 = SY-INDEX ** 2.
  APPEND ITAB2. "新增至内表中
ENDDO.
LOOP AT ITAB2. "ITAB2 总共有两个行
  WRITE: / ITAB2-COL1, ITAB2-COL2.
ENDLOOP.

skip.

append lines of dItab from 1 to 1 to itab2.
LOOP AT ITAB2. "ITAB2 总共有4行
  WRITE: / ITAB2-COL1, ITAB2-COL2.
ENDLOOP.

DATA: BEGIN OF ITAB3 OCCURS 3,
      COL1(3) TYPE C,
      COL2 TYPE I,
      END OF ITAB3.
ITAB3-COL1 = 'ABC' . ITAB3-COL2 = 10.
COLLECT ITAB3.
ITAB3-COL1 = 'XYZ' . ITAB3-COL2 = 20.
COLLECT ITAB3.
ITAB3-COL1 = 'ABC' . ITAB3-COL2 = 30.
COLLECT ITAB3. "汇总 COL2 至 COL1=ABC 的元素上
LOOP AT ITAB3.
  WRITE: / ITAB3-COL1, ITAB3-COL2.
ENDLOOP.

DATA: BEGIN OF line4,
      COL1 TYPE I,
      COL2 TYPE I,
      END OF line4.
DATA itab4 LIKE line4 OCCURS 10 with header line.
DO 3 TIMES.
  line4-COL1 = SY-INDEX * 10.
  line4-COL2 = SY-INDEX * 20.
  APPEND line4 TO itab4.
ENDDO.
line4-COL1 = 100.
line4-COL2 = 200.
INSERT line4 INTO itab4 index 2. "插入在位置2 之前
LOOP AT itab4 INTO line4.
  WRITE: / SY-TABIX, line4-COL1, line4-COL2. "SY-TABIX 为Table 位置
ENDLOOP.

skip.

LOOP AT ITAB4 INTO LINE4 WHERE COL1 >= 100.
  WRITE: / SY-TABIX, LINE4-COL1.
ENDLOOP.

skip.
read table itab4 into line4 index 2.
WRITE: / SY-TABIX, LINE4-COL1, LINE4-COL2.

skip.
LINE4-COL1 = 4.
write / LINE4-COL1.
LINE4-COL2 = 100.
MODIFY ITAB4 FROM LINE4 INDEX 2.
read table itab4 into line4 index 2.
WRITE: / SY-TABIX, LINE4-COL1, LINE4-COL2.

skip.
LINE4-COL1 = 10.
MODIFY ITAB4 FROM LINE4 INDEX 3 TRANSPORTING COL1.
read table itab4 into line4 index 3.
WRITE: / SY-TABIX, LINE4-COL1, LINE4-COL2.

skip.
write 'delete internal table use index:' .
delete ITAB4 index 2.
loop at itab4 into line4.
  write: / line4-col1, line4-col2.
endloop.

skip.
write 'delete internal table by condition.' .
delete itab4 where col2 = 40.
loop at itab4 into line4.
  write: / line4-col1, line4-col2.
endloop.

skip.
line4-col1 = 100.
line4-col2 = 400.
append line4 to itab4.

line4-col1 = 100.
line4-col2 = 200.
append line4 to itab4.

write 'sort internal table' .
*sort itab4 descending by col1 col2.
sort itab4 by col1 descending col2 ascending.
loop at itab4 into line4.
  write: / line4-col1, line4-col2.
endloop.

skip.
write 'calc numeric field sum.' .
LOOP AT ITAB4 INTO LINE4.
  SUM.
ENDLOOP.
WRITE: / LINE4-COL1, LINE4-COL2.

skip.
write 'refresh internal table.' .
clear ITAB3[].
LOOP AT ITAB3.
  WRITE: / ITAB3-COL1, ITAB3-COL2.
ENDLOOP.
free itab3.

span { font-family: "Courier New"; font-size: 10pt; color: rgb(0, 0, 0); background: none repeat scroll 0% 0% rgb(217, 217, 217); }.L0S32 { color: rgb(51, 153, 255); }.L0S33 { color: rgb(77, 166, 25); }.L0S52 { color: rgb(0, 0, 255); } write 'internal table with header line.' .
TYPES: BEGIN OF LINE5,
         COL1 TYPE I,
         COL2 TYPE I,
       END OF LINE5.

DATA ITAB5 TYPE HASHED TABLE OF LINE5 WITH UNIQUE KEY COL1
               WITH HEADER LINE.

DO 4 TIMES.
  ITAB5-COL1 = SY-INDEX.
  ITAB5-COL2 = SY-INDEX ** 2.
  INSERT TABLE ITAB5.
ENDDO.

write / 'read table.' .
ITAB5-COL1 = 2.
READ TABLE ITAB5 FROM ITAB5.
WRITE: / ITAB5-COL1, ITAB5-COL2.

write / 'modify table.' .
ITAB5-COL2 = 100.
MODIFY TABLE ITAB5.
LOOP AT ITAB5.
  WRITE: / ITAB5-COL1, ITAB5-COL2.
ENDLOOP.

write / 'delete table.' .
ITAB5-COL1 = 4.
DELETE TABLE ITAB5.
LOOP AT ITAB5.
  WRITE: / ITAB5-COL1, ITAB5-COL2.
ENDLOOP.

skip.
write 'internal table without header line.' .
TYPES: BEGIN OF LINE6,
         COL1 TYPE I,
         COL2 TYPE I,
       END OF LINE6.

DATA: ITAB6 TYPE HASHED TABLE OF LINE6 WITH UNIQUE KEY COL1,
      WA LIKE LINE OF ITAB6.

DO 4 TIMES.
  WA-COL1 = SY-INDEX.
  WA-COL2 = SY-INDEX ** 2.
  INSERT WA INTO TABLE ITAB6.
ENDDO.

WA-COL1 = 2.
READ TABLE ITAB6 FROM WA INTO WA.

WA-COL2 = 100.
MODIFY TABLE ITAB6 FROM WA.

WA-COL1 = 4.
DELETE TABLE ITAB6 FROM WA.

LOOP AT ITAB6 INTO WA.
  WRITE: / WA-COL1, WA-COL2.
ENDLOOP.