ABAP Select data from SAP table REXCAT_RAB_BILLER into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REXCAT_RAB_BILLER
*  INTO TABLE @DATA(IT_REXCAT_RAB_BILLER2).
*--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_REXCAT_RAB_BILLER INDEX 1 INTO DATA(WA_REXCAT_RAB_BILLER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REXCAT_RAB_BILLER>-ADDRESS = 1.
<REXCAT_RAB_BILLER>-ADDRESS_IDENTIFIER = 1.
<REXCAT_RAB_BILLER>-CONTACT = 1.
<REXCAT_RAB_BILLER>-COUNTRY = 1.
<REXCAT_RAB_BILLER>-COUNTRY_CODE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REXCAT_RAB_BILLER-EMAIL, sy-vline,
  WA_REXCAT_RAB_BILLER-NAME, sy-vline,
  WA_REXCAT_RAB_BILLER-PHONE, sy-vline,
  WA_REXCAT_RAB_BILLER-POBOX, sy-vline,
  WA_REXCAT_RAB_BILLER-SALUTATION, sy-vline,
  WA_REXCAT_RAB_BILLER-STREET, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REXCAT_RAB_BILLER 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_REXCAT_RAB_BILLER 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_REXCAT_RAB_BILLER INTO WA_REXCAT_RAB_BILLER.


*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_REXCAT_RAB_BILLER_STR, 
ADDRESS TYPE STRING,
ADDRESS_IDENTIFIER TYPE STRING,
CONTACT TYPE STRING,
COUNTRY TYPE STRING,
COUNTRY_CODE TYPE STRING,
EMAIL TYPE STRING,
NAME TYPE STRING,
PHONE TYPE STRING,
POBOX TYPE STRING,
SALUTATION TYPE STRING,
STREET TYPE STRING,
TOWN TYPE STRING,
ZIP TYPE STRING,
EXTENSION TYPE STRING,
SV_EXTENSION TYPE STRING,
CUSTOM TYPE STRING,
CONSOLIDATORS_BILLER_ID TYPE STRING,
FURTHER_IDENTIFICATION TYPE STRING,
INVOICE_RECIPIENTS_BILLER_ID TYPE STRING,
ORDER_REFERENCE TYPE STRING,
DESCRIPTION TYPE STRING,
ORDER_ID TYPE STRING,
REFERENCE_DATE TYPE STRING,
VAT_IDENTIFICATION_NUMBER TYPE STRING,
EXTENSION TYPE STRING,
SV_EXTENSION TYPE STRING,
CUSTOM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REXCAT_RAB_BILLER_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_REXCAT_RAB_BILLER_STR-ADDRESS sy-vline 
WA_REXCAT_RAB_BILLER_STR-ADDRESS_IDENTIFIER sy-vline 
WA_REXCAT_RAB_BILLER_STR-CONTACT sy-vline 
WA_REXCAT_RAB_BILLER_STR-COUNTRY sy-vline 
WA_REXCAT_RAB_BILLER_STR-COUNTRY_CODE sy-vline 
WA_REXCAT_RAB_BILLER_STR-EMAIL sy-vline 
WA_REXCAT_RAB_BILLER_STR-NAME sy-vline 
WA_REXCAT_RAB_BILLER_STR-PHONE sy-vline 
WA_REXCAT_RAB_BILLER_STR-POBOX sy-vline 
WA_REXCAT_RAB_BILLER_STR-SALUTATION sy-vline 
WA_REXCAT_RAB_BILLER_STR-STREET sy-vline 
WA_REXCAT_RAB_BILLER_STR-TOWN sy-vline 
WA_REXCAT_RAB_BILLER_STR-ZIP sy-vline 
WA_REXCAT_RAB_BILLER_STR-EXTENSION sy-vline 
WA_REXCAT_RAB_BILLER_STR-SV_EXTENSION sy-vline 
WA_REXCAT_RAB_BILLER_STR-CUSTOM sy-vline 
WA_REXCAT_RAB_BILLER_STR-CONSOLIDATORS_BILLER_ID sy-vline 
WA_REXCAT_RAB_BILLER_STR-FURTHER_IDENTIFICATION sy-vline 
WA_REXCAT_RAB_BILLER_STR-INVOICE_RECIPIENTS_BILLER_ID sy-vline 
WA_REXCAT_RAB_BILLER_STR-ORDER_REFERENCE sy-vline 
WA_REXCAT_RAB_BILLER_STR-DESCRIPTION sy-vline 
WA_REXCAT_RAB_BILLER_STR-ORDER_ID sy-vline 
WA_REXCAT_RAB_BILLER_STR-REFERENCE_DATE sy-vline 
WA_REXCAT_RAB_BILLER_STR-VAT_IDENTIFICATION_NUMBER sy-vline 
WA_REXCAT_RAB_BILLER_STR-EXTENSION sy-vline 
WA_REXCAT_RAB_BILLER_STR-SV_EXTENSION sy-vline 
WA_REXCAT_RAB_BILLER_STR-CUSTOM sy-vline      INTO ld_text SEPARATED BY SPACE.

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