ABAP Select data from SAP table RCONDPOS_SMALL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RCONDPOS_SMALL
*  INTO TABLE @DATA(IT_RCONDPOS_SMALL2).
*--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_RCONDPOS_SMALL INDEX 1 INTO DATA(WA_RCONDPOS_SMALL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RCONDPOS_SMALL>-DGUEL_KP = 1.
<RCONDPOS_SMALL>-SKOART = 1.
<RCONDPOS_SMALL>-DFAELL = 1.
<RCONDPOS_SMALL>-PKOND = 1.
<RCONDPOS_SMALL>-BKOND = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RCONDPOS_SMALL-SZSREF, sy-vline,
  WA_RCONDPOS_SMALL-AMMRHY, sy-vline,
  WA_RCONDPOS_SMALL-SPARTNR, sy-vline,
  WA_RCONDPOS_SMALL-BVTYP, sy-vline,
  WA_RCONDPOS_SMALL-ZLSCH, sy-vline,
  WA_RCONDPOS_SMALL-ZAHLS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RCONDPOS_SMALL 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_RCONDPOS_SMALL 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_RCONDPOS_SMALL INTO WA_RCONDPOS_SMALL.


*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 SPARTNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RCONDPOS_SMALL-SPARTNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCONDPOS_SMALL-SPARTNR.
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_RCONDPOS_SMALL_STR, 
DGUEL_KP TYPE STRING,
SKOART TYPE STRING,
DFAELL TYPE STRING,
PKOND TYPE STRING,
BKOND TYPE STRING,
SZSREF TYPE STRING,
AMMRHY TYPE STRING,
SPARTNR TYPE STRING,
BVTYP TYPE STRING,
ZLSCH TYPE STRING,
ZAHLS TYPE STRING,
SKOAREF TYPE STRING,
SKOPO TYPE STRING,
FLGEX_SPARTNR TYPE STRING,
FLGEX_DGUEL_KP TYPE STRING,
FLGEX_DFAELL TYPE STRING,
FLGEX_AMMRHY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RCONDPOS_SMALL_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_RCONDPOS_SMALL_STR-DGUEL_KP sy-vline 
WA_RCONDPOS_SMALL_STR-SKOART sy-vline 
WA_RCONDPOS_SMALL_STR-DFAELL sy-vline 
WA_RCONDPOS_SMALL_STR-PKOND sy-vline 
WA_RCONDPOS_SMALL_STR-BKOND sy-vline 
WA_RCONDPOS_SMALL_STR-SZSREF sy-vline 
WA_RCONDPOS_SMALL_STR-AMMRHY sy-vline 
WA_RCONDPOS_SMALL_STR-SPARTNR sy-vline 
WA_RCONDPOS_SMALL_STR-BVTYP sy-vline 
WA_RCONDPOS_SMALL_STR-ZLSCH sy-vline 
WA_RCONDPOS_SMALL_STR-ZAHLS sy-vline 
WA_RCONDPOS_SMALL_STR-SKOAREF sy-vline 
WA_RCONDPOS_SMALL_STR-SKOPO sy-vline 
WA_RCONDPOS_SMALL_STR-FLGEX_SPARTNR sy-vline 
WA_RCONDPOS_SMALL_STR-FLGEX_DGUEL_KP sy-vline 
WA_RCONDPOS_SMALL_STR-FLGEX_DFAELL sy-vline 
WA_RCONDPOS_SMALL_STR-FLGEX_AMMRHY sy-vline      INTO ld_text SEPARATED BY SPACE.

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