ABAP Select data from SAP table RL080_HEADER into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RL080_HEADER 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 RL080_HEADER. 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 RL080_HEADER 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_RL080_HEADER TYPE STANDARD TABLE OF RL080_HEADER,
      WA_RL080_HEADER TYPE RL080_HEADER,
      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: <RL080_HEADER> TYPE RL080_HEADER.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RL080_HEADER.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RL080_HEADER
  INTO TABLE IT_RL080_HEADER.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RL080_HEADER
*  INTO TABLE @DATA(IT_RL080_HEADER2).
*--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_RL080_HEADER INDEX 1 INTO DATA(WA_RL080_HEADER2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RL080_HEADER ASSIGNING <RL080_HEADER>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RL080_HEADER>-LGTYP = 1.
<RL080_HEADER>-LTYPT = 1.
<RL080_HEADER>-BRAND = 1.
<RL080_HEADER>-BRANT = 1.
<RL080_HEADER>-MATNR = 1.

ENDLOOP.

LOOP AT IT_RL080_HEADER INTO WA_RL080_HEADER.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RL080_HEADER-MAKTX, sy-vline,
  WA_RL080_HEADER-LAGKL, sy-vline,
  WA_RL080_HEADER-WGFKL, sy-vline,
  WA_RL080_HEADER-GVTXT, sy-vline,
  WA_RL080_HEADER-GESME, sy-vline,
  WA_RL080_HEADER-MEINS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RL080_HEADER 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_RL080_HEADER 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_RL080_HEADER INTO WA_RL080_HEADER.


*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.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_RL080_HEADER-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RL080_HEADER-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RL080_HEADER-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RL080_HEADER-MEINS.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

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

TYPES: BEGIN OF T_RL080_HEADER_STR, 
LGTYP TYPE STRING,
LTYPT TYPE STRING,
BRAND TYPE STRING,
BRANT TYPE STRING,
MATNR TYPE STRING,
MAKTX TYPE STRING,
LAGKL TYPE STRING,
WGFKL TYPE STRING,
GVTXT TYPE STRING,
GESME TYPE STRING,
MEINS TYPE STRING,
AGGRT TYPE STRING,
LAGKT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RL080_HEADER_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_RL080_HEADER_STR-LGTYP sy-vline 
WA_RL080_HEADER_STR-LTYPT sy-vline 
WA_RL080_HEADER_STR-BRAND sy-vline 
WA_RL080_HEADER_STR-BRANT sy-vline 
WA_RL080_HEADER_STR-MATNR sy-vline 
WA_RL080_HEADER_STR-MAKTX sy-vline 
WA_RL080_HEADER_STR-LAGKL sy-vline 
WA_RL080_HEADER_STR-WGFKL sy-vline 
WA_RL080_HEADER_STR-GVTXT sy-vline 
WA_RL080_HEADER_STR-GESME sy-vline 
WA_RL080_HEADER_STR-MEINS sy-vline 
WA_RL080_HEADER_STR-AGGRT sy-vline 
WA_RL080_HEADER_STR-LAGKT sy-vline      INTO ld_text SEPARATED BY SPACE.

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