ABAP Select data from SAP table RMXMS_STKO into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RMXMS_STKO
*  INTO TABLE @DATA(IT_RMXMS_STKO2).
*--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_RMXMS_STKO INDEX 1 INTO DATA(WA_RMXMS_STKO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RMXMS_STKO>-STKO_KEY = 1.
<RMXMS_STKO>-MANDT = 1.
<RMXMS_STKO>-STLTY = 1.
<RMXMS_STKO>-STLNR = 1.
<RMXMS_STKO>-STLAL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RMXMS_STKO-STKOZ, sy-vline,
  WA_RMXMS_STKO-STKO_GR, sy-vline,
  WA_RMXMS_STKO-BMEIN, sy-vline,
  WA_RMXMS_STKO-BMENG, sy-vline,
  WA_RMXMS_STKO-STKO_MR, sy-vline,
  WA_RMXMS_STKO-DATUV, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RMXMS_STKO 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_RMXMS_STKO 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_RMXMS_STKO INTO WA_RMXMS_STKO.


*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 NUMCV, internal->external for field STLNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_RMXMS_STKO-STLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RMXMS_STKO-STLNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit ISOLA, internal->external for field LTXSP
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_RMXMS_STKO-LTXSP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RMXMS_STKO-LTXSP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AENRA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RMXMS_STKO-AENRA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RMXMS_STKO-AENRA.
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_RMXMS_STKO_STR, 
STKO_KEY TYPE STRING,
MANDT TYPE STRING,
STLTY TYPE STRING,
STLNR TYPE STRING,
STLAL TYPE STRING,
STKOZ TYPE STRING,
STKO_GR TYPE STRING,
BMEIN TYPE STRING,
BMENG TYPE STRING,
STKO_MR TYPE STRING,
DATUV TYPE STRING,
TECHV TYPE STRING,
AENNR TYPE STRING,
LKENZ TYPE STRING,
LOEKZ TYPE STRING,
VGKZL TYPE STRING,
ANDAT TYPE STRING,
ANNAM TYPE STRING,
AEDAT TYPE STRING,
AENAM TYPE STRING,
CADKZ TYPE STRING,
LABOR TYPE STRING,
LTXSP TYPE STRING,
STKTX TYPE STRING,
STLST TYPE STRING,
WRKAN TYPE STRING,
DVDAT TYPE STRING,
DVNAM TYPE STRING,
AEHLP TYPE STRING,
ALEKZ TYPE STRING,
GUIDX TYPE STRING,
LTXPS TYPE STRING,
LTXVB TYPE STRING,
VBKZ TYPE STRING,
MVBKZ TYPE STRING,
DATUB TYPE STRING,
AENRA TYPE STRING,
AENKZ TYPE STRING,
SELKZ TYPE STRING,
KZDOC TYPE STRING,
EFRNK TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RMXMS_STKO_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_RMXMS_STKO_STR-STKO_KEY sy-vline 
WA_RMXMS_STKO_STR-MANDT sy-vline 
WA_RMXMS_STKO_STR-STLTY sy-vline 
WA_RMXMS_STKO_STR-STLNR sy-vline 
WA_RMXMS_STKO_STR-STLAL sy-vline 
WA_RMXMS_STKO_STR-STKOZ sy-vline 
WA_RMXMS_STKO_STR-STKO_GR sy-vline 
WA_RMXMS_STKO_STR-BMEIN sy-vline 
WA_RMXMS_STKO_STR-BMENG sy-vline 
WA_RMXMS_STKO_STR-STKO_MR sy-vline 
WA_RMXMS_STKO_STR-DATUV sy-vline 
WA_RMXMS_STKO_STR-TECHV sy-vline 
WA_RMXMS_STKO_STR-AENNR sy-vline 
WA_RMXMS_STKO_STR-LKENZ sy-vline 
WA_RMXMS_STKO_STR-LOEKZ sy-vline 
WA_RMXMS_STKO_STR-VGKZL sy-vline 
WA_RMXMS_STKO_STR-ANDAT sy-vline 
WA_RMXMS_STKO_STR-ANNAM sy-vline 
WA_RMXMS_STKO_STR-AEDAT sy-vline 
WA_RMXMS_STKO_STR-AENAM sy-vline 
WA_RMXMS_STKO_STR-CADKZ sy-vline 
WA_RMXMS_STKO_STR-LABOR sy-vline 
WA_RMXMS_STKO_STR-LTXSP sy-vline 
WA_RMXMS_STKO_STR-STKTX sy-vline 
WA_RMXMS_STKO_STR-STLST sy-vline 
WA_RMXMS_STKO_STR-WRKAN sy-vline 
WA_RMXMS_STKO_STR-DVDAT sy-vline 
WA_RMXMS_STKO_STR-DVNAM sy-vline 
WA_RMXMS_STKO_STR-AEHLP sy-vline 
WA_RMXMS_STKO_STR-ALEKZ sy-vline 
WA_RMXMS_STKO_STR-GUIDX sy-vline 
WA_RMXMS_STKO_STR-LTXPS sy-vline 
WA_RMXMS_STKO_STR-LTXVB sy-vline 
WA_RMXMS_STKO_STR-VBKZ sy-vline 
WA_RMXMS_STKO_STR-MVBKZ sy-vline 
WA_RMXMS_STKO_STR-DATUB sy-vline 
WA_RMXMS_STKO_STR-AENRA sy-vline 
WA_RMXMS_STKO_STR-AENKZ sy-vline 
WA_RMXMS_STKO_STR-SELKZ sy-vline 
WA_RMXMS_STKO_STR-KZDOC sy-vline 
WA_RMXMS_STKO_STR-EFRNK sy-vline      INTO ld_text SEPARATED BY SPACE.

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