ABAP Select data from SAP table WRMA_S_REFSEL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WRMA_S_REFSEL
*  INTO TABLE @DATA(IT_WRMA_S_REFSEL2).
*--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_WRMA_S_REFSEL INDEX 1 INTO DATA(WA_WRMA_S_REFSEL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WRMA_S_REFSEL>-WERKS = 1.
<WRMA_S_REFSEL>-VKORG = 1.
<WRMA_S_REFSEL>-VTWEG = 1.
<WRMA_S_REFSEL>-EKORG = 1.
<WRMA_S_REFSEL>-BUKRS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WRMA_S_REFSEL-MATNR, sy-vline,
  WA_WRMA_S_REFSEL-LIFNR, sy-vline,
  WA_WRMA_S_REFSEL-LTSNR, sy-vline,
  WA_WRMA_S_REFSEL-EKGRP, sy-vline,
  WA_WRMA_S_REFSEL-FISCVAR, sy-vline,
  WA_WRMA_S_REFSEL-FISCPER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WRMA_S_REFSEL 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_WRMA_S_REFSEL 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_WRMA_S_REFSEL INTO WA_WRMA_S_REFSEL.


*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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_WRMA_S_REFSEL-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WRMA_S_REFSEL-MATNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit PERI7, internal->external for field FISCPER
CALL FUNCTION 'CONVERSION_EXIT_PERI7_OUTPUT'
  EXPORTING
    input =                      WA_WRMA_S_REFSEL-FISCPER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WRMA_S_REFSEL-FISCPER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field FISCYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_WRMA_S_REFSEL-FISCYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WRMA_S_REFSEL-FISCYEAR.
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_WRMA_S_REFSEL_STR, 
WERKS TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
EKORG TYPE STRING,
BUKRS TYPE STRING,
MATNR TYPE STRING,
LIFNR TYPE STRING,
LTSNR TYPE STRING,
EKGRP TYPE STRING,
FISCVAR TYPE STRING,
FISCPER TYPE STRING,
FISCYEAR TYPE STRING,
CALDAY TYPE STRING,
OBJECT TYPE STRING,
OBJECT_TYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WRMA_S_REFSEL_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_WRMA_S_REFSEL_STR-WERKS sy-vline 
WA_WRMA_S_REFSEL_STR-VKORG sy-vline 
WA_WRMA_S_REFSEL_STR-VTWEG sy-vline 
WA_WRMA_S_REFSEL_STR-EKORG sy-vline 
WA_WRMA_S_REFSEL_STR-BUKRS sy-vline 
WA_WRMA_S_REFSEL_STR-MATNR sy-vline 
WA_WRMA_S_REFSEL_STR-LIFNR sy-vline 
WA_WRMA_S_REFSEL_STR-LTSNR sy-vline 
WA_WRMA_S_REFSEL_STR-EKGRP sy-vline 
WA_WRMA_S_REFSEL_STR-FISCVAR sy-vline 
WA_WRMA_S_REFSEL_STR-FISCPER sy-vline 
WA_WRMA_S_REFSEL_STR-FISCYEAR sy-vline 
WA_WRMA_S_REFSEL_STR-CALDAY sy-vline 
WA_WRMA_S_REFSEL_STR-OBJECT sy-vline 
WA_WRMA_S_REFSEL_STR-OBJECT_TYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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