ABAP Select data from SAP table RPUBEN42_ALV3 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RPUBEN42_ALV3 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 RPUBEN42_ALV3. 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 RPUBEN42_ALV3 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_RPUBEN42_ALV3 TYPE STANDARD TABLE OF RPUBEN42_ALV3,
      WA_RPUBEN42_ALV3 TYPE RPUBEN42_ALV3,
      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: <RPUBEN42_ALV3> TYPE RPUBEN42_ALV3.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RPUBEN42_ALV3.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RPUBEN42_ALV3
  INTO TABLE IT_RPUBEN42_ALV3.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RPUBEN42_ALV3
*  INTO TABLE @DATA(IT_RPUBEN42_ALV32).
*--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_RPUBEN42_ALV3 INDEX 1 INTO DATA(WA_RPUBEN42_ALV32).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RPUBEN42_ALV3 ASSIGNING <RPUBEN42_ALV3>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RPUBEN42_ALV3>-MSGTY = 1.
<RPUBEN42_ALV3>-TEXT = 1.
<RPUBEN42_ALV3>-TABIX = 1.
<RPUBEN42_ALV3>-FIELD1 = 1.
<RPUBEN42_ALV3>-FIELD2 = 1.

ENDLOOP.

LOOP AT IT_RPUBEN42_ALV3 INTO WA_RPUBEN42_ALV3.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RPUBEN42_ALV3-FIELD3, sy-vline,
  WA_RPUBEN42_ALV3-FIELD4, sy-vline,
  WA_RPUBEN42_ALV3-FIELD5, sy-vline,
  WA_RPUBEN42_ALV3-FIELD6, sy-vline,
  WA_RPUBEN42_ALV3-FIELD7, sy-vline,
  WA_RPUBEN42_ALV3-FIELD8, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RPUBEN42_ALV3 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_RPUBEN42_ALV3 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_RPUBEN42_ALV3 INTO WA_RPUBEN42_ALV3.


*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_RPUBEN42_ALV3_STR, 
MSGTY TYPE STRING,
TEXT TYPE STRING,
TABIX TYPE STRING,
FIELD1 TYPE STRING,
FIELD2 TYPE STRING,
FIELD3 TYPE STRING,
FIELD4 TYPE STRING,
FIELD5 TYPE STRING,
FIELD6 TYPE STRING,
FIELD7 TYPE STRING,
FIELD8 TYPE STRING,
FIELD9 TYPE STRING,
FIELD10 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RPUBEN42_ALV3_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_RPUBEN42_ALV3_STR-MSGTY sy-vline 
WA_RPUBEN42_ALV3_STR-TEXT sy-vline 
WA_RPUBEN42_ALV3_STR-TABIX sy-vline 
WA_RPUBEN42_ALV3_STR-FIELD1 sy-vline 
WA_RPUBEN42_ALV3_STR-FIELD2 sy-vline 
WA_RPUBEN42_ALV3_STR-FIELD3 sy-vline 
WA_RPUBEN42_ALV3_STR-FIELD4 sy-vline 
WA_RPUBEN42_ALV3_STR-FIELD5 sy-vline 
WA_RPUBEN42_ALV3_STR-FIELD6 sy-vline 
WA_RPUBEN42_ALV3_STR-FIELD7 sy-vline 
WA_RPUBEN42_ALV3_STR-FIELD8 sy-vline 
WA_RPUBEN42_ALV3_STR-FIELD9 sy-vline 
WA_RPUBEN42_ALV3_STR-FIELD10 sy-vline      INTO ld_text SEPARATED BY SPACE.

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