ABAP Select data from SAP table RJS_POST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RJS_POST
*  INTO TABLE @DATA(IT_RJS_POST2).
*--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_RJS_POST INDEX 1 INTO DATA(WA_RJS_POST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RJS_POST>-STRUKNOART = 1.
<RJS_POST>-LAND1 = 1.
<RJS_POST>-ALORT = 1.
<RJS_POST>-PLZNEU = 1.
<RJS_POST>-PLZORT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RJS_POST-ORTNAME, sy-vline,
  WA_RJS_POST-ORTZUSA, sy-vline,
  WA_RJS_POST-STRASSENNR, sy-vline,
  WA_RJS_POST-STRLFDNR, sy-vline,
  WA_RJS_POST-SNAMEPO, sy-vline,
  WA_RJS_POST-ORTSTEIL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RJS_POST 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_RJS_POST 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_RJS_POST INTO WA_RJS_POST.


*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 ALPHA, internal->external for field ALORT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJS_POST-ALORT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJS_POST-ALORT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field STRASSENNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RJS_POST-STRASSENNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RJS_POST-STRASSENNR.
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_RJS_POST_STR, 
STRUKNOART TYPE STRING,
LAND1 TYPE STRING,
ALORT TYPE STRING,
PLZNEU TYPE STRING,
PLZORT TYPE STRING,
ORTNAME TYPE STRING,
ORTZUSA TYPE STRING,
STRASSENNR TYPE STRING,
STRLFDNR TYPE STRING,
SNAMEPO TYPE STRING,
ORTSTEIL TYPE STRING,
HNRKENN TYPE STRING,
HAUSNRVON TYPE STRING,
HAUSNRBIS TYPE STRING,
HNRZUSVON TYPE STRING,
HNRZUSBIS TYPE STRING,
ADRZUSATZ TYPE STRING,
STOCKWERK TYPE STRING,
XMORE TYPE STRING,
LANDX TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RJS_POST_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_RJS_POST_STR-STRUKNOART sy-vline 
WA_RJS_POST_STR-LAND1 sy-vline 
WA_RJS_POST_STR-ALORT sy-vline 
WA_RJS_POST_STR-PLZNEU sy-vline 
WA_RJS_POST_STR-PLZORT sy-vline 
WA_RJS_POST_STR-ORTNAME sy-vline 
WA_RJS_POST_STR-ORTZUSA sy-vline 
WA_RJS_POST_STR-STRASSENNR sy-vline 
WA_RJS_POST_STR-STRLFDNR sy-vline 
WA_RJS_POST_STR-SNAMEPO sy-vline 
WA_RJS_POST_STR-ORTSTEIL sy-vline 
WA_RJS_POST_STR-HNRKENN sy-vline 
WA_RJS_POST_STR-HAUSNRVON sy-vline 
WA_RJS_POST_STR-HAUSNRBIS sy-vline 
WA_RJS_POST_STR-HNRZUSVON sy-vline 
WA_RJS_POST_STR-HNRZUSBIS sy-vline 
WA_RJS_POST_STR-ADRZUSATZ sy-vline 
WA_RJS_POST_STR-STOCKWERK sy-vline 
WA_RJS_POST_STR-XMORE sy-vline 
WA_RJS_POST_STR-LANDX sy-vline      INTO ld_text SEPARATED BY SPACE.

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