SAP ABAP——内表（八）【修改内表数据】

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原文地址：SAP ABAP——内表（八）【修改内表数据】 - 芒果个人日志 (wyz-math.cn)

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作者简介： THUNDER王，一名热爱财税和SAP ABAP编程以及热爱分享的博主。目前于江西师范大学会计学专业大二本科在读，同时任汉硕云（广东）科技有限公司ABAP开发顾问。在学习工作中，我通常使用偏后端的开发语言ABAP，SQL进行任务的完成，对SAP企业管理系统，SAP ABAP开发和数据库具有较深入的研究。

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文章概要：本文主要介绍一下SAP ABAP中内表的增删查改语句中的修改内表数据的相关语句，包括利用关键字修改数据，利用索引修改数据，利用WHERE语句修改数据

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每日一言：通过辛勤工作获得财富才是人生的大快事

目录

利用关键字修改数据

- 案例代码演示

- 效果演示

利用索引修改数据

- 案例代码演示

- 效果演示

利用WHERE语句修改数据

- 案例代码演示

- 效果演示

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利用关键字修改数据

MODIFY TABLE itab FTOM wa [TRANSPORTING f1 f2...].

- 案例代码演示

DATA:GT_SFLIGHT TYPE TABLE OF SFLIGHT WITH NON-UNIQUE KEY CARRID,
     GS_SFLIGHT TYPE SFLIGHT.

GS_SFLIGHT-CARRID = 'AC'.
GS_SFLIGHT-CONNID = 0820.
GS_SFLIGHT-FLDATE = '20200716'.
GS_SFLIGHT-PRICE = 1500.
APPEND GS_SFLIGHT TO GT_SFLIGHT.

WRITE:'内表修改前数据'.
LOOP AT GT_SFLIGHT INTO GS_SFLIGHT.
  WRITE:/ GS_SFLIGHT-CARRID,GS_SFLIGHT-CONNID,GS_SFLIGHT-FLDATE,GS_SFLIGHT-PRICE.
ENDLOOP.

GS_SFLIGHT-CARRID = 'AC'.
GS_SFLIGHT-CONNID = 0820.
GS_SFLIGHT-FLDATE = '20200717'.
GS_SFLIGHT-PRICE = 1600.
MODIFY TABLE GT_SFLIGHT FROM GS_SFLIGHT.

ULINE.
WRITE:'内表修改后数据(不指定修改字段)'.
LOOP AT GT_SFLIGHT INTO GS_SFLIGHT.
  WRITE:/ GS_SFLIGHT-CARRID,GS_SFLIGHT-CONNID,GS_SFLIGHT-FLDATE,GS_SFLIGHT-PRICE.
ENDLOOP.

GS_SFLIGHT-CARRID = 'AC'.
GS_SFLIGHT-CONNID = 0820.
GS_SFLIGHT-FLDATE = '20200715'.
GS_SFLIGHT-PRICE = 1700.   
MODIFY TABLE GT_SFLIGHT FROM GS_SFLIGHT TRANSPORTING PRICE.

ULINE.
WRITE:'内表修改后数据(指定修改PRICE字段,故FLDATE字段没有修改)'.
LOOP AT GT_SFLIGHT INTO GS_SFLIGHT.
  WRITE:/ GS_SFLIGHT-CARRID,GS_SFLIGHT-CONNID,GS_SFLIGHT-FLDATE,GS_SFLIGHT-PRICE.
ENDLOOP.

- 效果演示

使用关键字修改内表数据

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利用索引修改数据

MODIFY itab INDEX n [TRANSPORTING f1 f2...].

PS:
1) 在LOOP循环中，MODIFY后不需要加INDEX，系统自动将数据更新到当前所在索引行
2) 使用索引修改数据只适用于标准表和排序表，不适用于哈希表

- 案例代码演示

DATA:GT_SFLIGHT TYPE TABLE OF SFLIGHT WITH NON-UNIQUE KEY CARRID,
     GS_SFLIGHT TYPE SFLIGHT.

GS_SFLIGHT-CARRID = 'AC'.
GS_SFLIGHT-CONNID = 0820.
GS_SFLIGHT-FLDATE = '20200716'.
GS_SFLIGHT-PRICE = 1500.
APPEND GS_SFLIGHT TO GT_SFLIGHT.

GS_SFLIGHT-CARRID = 'AC'.
GS_SFLIGHT-CONNID = 0820.
GS_SFLIGHT-FLDATE = '20200717'.
GS_SFLIGHT-PRICE = 1600.
APPEND GS_SFLIGHT TO GT_SFLIGHT.

GS_SFLIGHT-CARRID = 'AC'.
GS_SFLIGHT-CONNID = 0820.
GS_SFLIGHT-FLDATE = '202007174'.
GS_SFLIGHT-PRICE = 1800.
APPEND GS_SFLIGHT TO GT_SFLIGHT.

WRITE:'内表修改前数据'.
LOOP AT GT_SFLIGHT INTO GS_SFLIGHT.
  WRITE:/ GS_SFLIGHT-CARRID,GS_SFLIGHT-CONNID,GS_SFLIGHT-FLDATE,GS_SFLIGHT-PRICE.
ENDLOOP.

GS_SFLIGHT-CARRID = 'AC'.
GS_SFLIGHT-CONNID = 0820.
GS_SFLIGHT-FLDATE = '20200715'.
GS_SFLIGHT-PRICE = 1700.
MODIFY  GT_SFLIGHT FROM GS_SFLIGHT INDEX 2.

ULINE.
WRITE:'内表修改后数据(不指定修改字段)'.
LOOP AT GT_SFLIGHT INTO GS_SFLIGHT.
  WRITE:/ GS_SFLIGHT-CARRID,GS_SFLIGHT-CONNID,GS_SFLIGHT-FLDATE,GS_SFLIGHT-PRICE.
ENDLOOP.

GS_SFLIGHT-CARRID = 'AC'.
GS_SFLIGHT-CONNID = 0820.
GS_SFLIGHT-FLDATE = '20200721'.
GS_SFLIGHT-PRICE = 1900.
MODIFY  GT_SFLIGHT FROM GS_SFLIGHT INDEX 1 TRANSPORTING PRICE.

ULINE.
WRITE:'内表修改后数据(指定修改PRICE字段,故FLDATE字段没有修改)'.
LOOP AT GT_SFLIGHT INTO GS_SFLIGHT.
  WRITE:/ GS_SFLIGHT-CARRID,GS_SFLIGHT-CONNID,GS_SFLIGHT-FLDATE,GS_SFLIGHT-PRICE.
ENDLOOP.

- 效果演示

使用索引修改内表数据

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利用WHERE语句修改数据

MODIFY itab FROM wa TRANSPORTING f1 f2... WHERE condition.

- 案例代码演示

DATA:GT_SFLIGHT TYPE TABLE OF SFLIGHT WITH NON-UNIQUE KEY CARRID,
      GS_SFLIGHT TYPE SFLIGHT.

GS_SFLIGHT-CARRID = 'AC'.
GS_SFLIGHT-CONNID = 0820.
GS_SFLIGHT-FLDATE = '20200716'.
GS_SFLIGHT-PRICE = 1500.
APPEND GS_SFLIGHT TO GT_SFLIGHT.

GS_SFLIGHT-CARRID = 'AC'.
GS_SFLIGHT-CONNID = 0820.
GS_SFLIGHT-FLDATE = '20200717'.
GS_SFLIGHT-PRICE = 1600.
APPEND GS_SFLIGHT TO GT_SFLIGHT.

GS_SFLIGHT-CARRID = 'BC'.
GS_SFLIGHT-CONNID = 0820.
GS_SFLIGHT-FLDATE = '20200718'.
GS_SFLIGHT-PRICE = 1700.
APPEND GS_SFLIGHT TO GT_SFLIGHT.

WRITE:'内表数据修改前：'.
LOOP AT GT_SFLIGHT INTO GS_SFLIGHT.
  WRITE:/ GS_SFLIGHT-CARRID,GS_SFLIGHT-CONNID,GS_SFLIGHT-FLDATE,GS_SFLIGHT-PRICE.
ENDLOOP.

GS_SFLIGHT-PRICE = 2000.

MODIFY  GT_SFLIGHT FROM GS_SFLIGHT TRANSPORTING PRICE WHERE CARRID = 'AC'.

ULINE.
WRITE:'内表数据修改后：'.
LOOP AT GT_SFLIGHT INTO GS_SFLIGHT.
  WRITE:/ GS_SFLIGHT-CARRID,GS_SFLIGHT-CONNID,GS_SFLIGHT-FLDATE,GS_SFLIGHT-PRICE.
ENDLOOP.

- 效果演示

使用where语句修改内表数据