ABAP Select data from SAP table REXCAT_RAB_ADDRESS 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_ADDRESS 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_ADDRESS. 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_ADDRESS 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_ADDRESS TYPE STANDARD TABLE OF REXCAT_RAB_ADDRESS,
      WA_REXCAT_RAB_ADDRESS TYPE REXCAT_RAB_ADDRESS,
      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_ADDRESS> TYPE REXCAT_RAB_ADDRESS.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REXCAT_RAB_ADDRESS
*  INTO TABLE @DATA(IT_REXCAT_RAB_ADDRESS2).
*--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_ADDRESS INDEX 1 INTO DATA(WA_REXCAT_RAB_ADDRESS2).


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

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

ENDLOOP.

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

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


*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_ADDRESS_STR, 
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,END OF T_EKKO_STR.
DATA: WA_REXCAT_RAB_ADDRESS_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_ADDRESS_STR-ADDRESS_IDENTIFIER sy-vline 
WA_REXCAT_RAB_ADDRESS_STR-CONTACT sy-vline 
WA_REXCAT_RAB_ADDRESS_STR-COUNTRY sy-vline 
WA_REXCAT_RAB_ADDRESS_STR-COUNTRY_CODE sy-vline 
WA_REXCAT_RAB_ADDRESS_STR-EMAIL sy-vline 
WA_REXCAT_RAB_ADDRESS_STR-NAME sy-vline 
WA_REXCAT_RAB_ADDRESS_STR-PHONE sy-vline 
WA_REXCAT_RAB_ADDRESS_STR-POBOX sy-vline 
WA_REXCAT_RAB_ADDRESS_STR-SALUTATION sy-vline 
WA_REXCAT_RAB_ADDRESS_STR-STREET sy-vline 
WA_REXCAT_RAB_ADDRESS_STR-TOWN sy-vline 
WA_REXCAT_RAB_ADDRESS_STR-ZIP sy-vline 
WA_REXCAT_RAB_ADDRESS_STR-EXTENSION sy-vline 
WA_REXCAT_RAB_ADDRESS_STR-SV_EXTENSION sy-vline 
WA_REXCAT_RAB_ADDRESS_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.