ABAP Select data from SAP table RPSAAPU1_ALV1 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RPSAAPU1_ALV1 table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to RPSAAPU1_ALV1. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the RPSAAPU1_ALV1 table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_RPSAAPU1_ALV1 TYPE STANDARD TABLE OF RPSAAPU1_ALV1,
      WA_RPSAAPU1_ALV1 TYPE RPSAAPU1_ALV1,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <RPSAAPU1_ALV1> TYPE RPSAAPU1_ALV1.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RPSAAPU1_ALV1.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RPSAAPU1_ALV1
  INTO TABLE IT_RPSAAPU1_ALV1.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RPSAAPU1_ALV1
*  INTO TABLE @DATA(IT_RPSAAPU1_ALV12).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_RPSAAPU1_ALV1 INDEX 1 INTO DATA(WA_RPSAAPU1_ALV12).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RPSAAPU1_ALV1 ASSIGNING <RPSAAPU1_ALV1>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RPSAAPU1_ALV1>-BUKRS = 1.
<RPSAAPU1_ALV1>-WERKS = 1.
<RPSAAPU1_ALV1>-BTRTL = 1.
<RPSAAPU1_ALV1>-ORGEH = 1.
<RPSAAPU1_ALV1>-TEXTS = 1.

ENDLOOP.

LOOP AT IT_RPSAAPU1_ALV1 INTO WA_RPSAAPU1_ALV1.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RPSAAPU1_ALV1-BEGCT, sy-vline,
  WA_RPSAAPU1_ALV1-HIRES, sy-vline,
  WA_RPSAAPU1_ALV1-TERMS, sy-vline,
  WA_RPSAAPU1_ALV1-RETIR, sy-vline,
  WA_RPSAAPU1_ALV1-TR_IN, sy-vline,
  WA_RPSAAPU1_ALV1-TROUT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RPSAAPU1_ALV1 you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_RPSAAPU1_ALV1 TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_RPSAAPU1_ALV1 INTO WA_RPSAAPU1_ALV1.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_RPSAAPU1_ALV1_STR, 
BUKRS TYPE STRING,
WERKS TYPE STRING,
BTRTL TYPE STRING,
ORGEH TYPE STRING,
TEXTS TYPE STRING,
BEGCT TYPE STRING,
HIRES TYPE STRING,
TERMS TYPE STRING,
RETIR TYPE STRING,
TR_IN TYPE STRING,
TROUT TYPE STRING,
ENDCT TYPE STRING,
TOVER TYPE STRING,
TEXT1 TYPE STRING,
MBEGC TYPE STRING,
MHIRE TYPE STRING,
MTERM TYPE STRING,
MRETI TYPE STRING,
MTRI0 TYPE STRING,
MTROU TYPE STRING,
MENDC TYPE STRING,
MTOVE TYPE STRING,
TEXT2 TYPE STRING,
MBEGC1 TYPE STRING,
MHIRE1 TYPE STRING,
MTERM1 TYPE STRING,
MRETI1 TYPE STRING,
MTRI1 TYPE STRING,
MTROU1 TYPE STRING,
MENDC1 TYPE STRING,
MTOVE1 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RPSAAPU1_ALV1_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_RPSAAPU1_ALV1_STR-BUKRS sy-vline 
WA_RPSAAPU1_ALV1_STR-WERKS sy-vline 
WA_RPSAAPU1_ALV1_STR-BTRTL sy-vline 
WA_RPSAAPU1_ALV1_STR-ORGEH sy-vline 
WA_RPSAAPU1_ALV1_STR-TEXTS sy-vline 
WA_RPSAAPU1_ALV1_STR-BEGCT sy-vline 
WA_RPSAAPU1_ALV1_STR-HIRES sy-vline 
WA_RPSAAPU1_ALV1_STR-TERMS sy-vline 
WA_RPSAAPU1_ALV1_STR-RETIR sy-vline 
WA_RPSAAPU1_ALV1_STR-TR_IN sy-vline 
WA_RPSAAPU1_ALV1_STR-TROUT sy-vline 
WA_RPSAAPU1_ALV1_STR-ENDCT sy-vline 
WA_RPSAAPU1_ALV1_STR-TOVER sy-vline 
WA_RPSAAPU1_ALV1_STR-TEXT1 sy-vline 
WA_RPSAAPU1_ALV1_STR-MBEGC sy-vline 
WA_RPSAAPU1_ALV1_STR-MHIRE sy-vline 
WA_RPSAAPU1_ALV1_STR-MTERM sy-vline 
WA_RPSAAPU1_ALV1_STR-MRETI sy-vline 
WA_RPSAAPU1_ALV1_STR-MTRI0 sy-vline 
WA_RPSAAPU1_ALV1_STR-MTROU sy-vline 
WA_RPSAAPU1_ALV1_STR-MENDC sy-vline 
WA_RPSAAPU1_ALV1_STR-MTOVE sy-vline 
WA_RPSAAPU1_ALV1_STR-TEXT2 sy-vline 
WA_RPSAAPU1_ALV1_STR-MBEGC1 sy-vline 
WA_RPSAAPU1_ALV1_STR-MHIRE1 sy-vline 
WA_RPSAAPU1_ALV1_STR-MTERM1 sy-vline 
WA_RPSAAPU1_ALV1_STR-MRETI1 sy-vline 
WA_RPSAAPU1_ALV1_STR-MTRI1 sy-vline 
WA_RPSAAPU1_ALV1_STR-MTROU1 sy-vline 
WA_RPSAAPU1_ALV1_STR-MENDC1 sy-vline 
WA_RPSAAPU1_ALV1_STR-MTOVE1 sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.