ABAP Select data from SAP table WRMA_S_AB_DOC 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_AB_DOC 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_AB_DOC. 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_AB_DOC 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_AB_DOC TYPE STANDARD TABLE OF WRMA_S_AB_DOC,
      WA_WRMA_S_AB_DOC TYPE WRMA_S_AB_DOC,
      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_AB_DOC> TYPE WRMA_S_AB_DOC.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WRMA_S_AB_DOC
*  INTO TABLE @DATA(IT_WRMA_S_AB_DOC2).
*--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_AB_DOC INDEX 1 INTO DATA(WA_WRMA_S_AB_DOC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WRMA_S_AB_DOC>-AB_DOCNR = 1.
<WRMA_S_AB_DOC>-AB_ITEM = 1.
<WRMA_S_AB_DOC>-PLANT = 1.
<WRMA_S_AB_DOC>-AB_USECASE = 1.
<WRMA_S_AB_DOC>-AB_VENDMAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WRMA_S_AB_DOC-AB_VENDMTP, sy-vline,
  WA_WRMA_S_AB_DOC-AB_CONDGRP, sy-vline,
  WA_WRMA_S_AB_DOC-MATERIAL, sy-vline,
  WA_WRMA_S_AB_DOC-RMA_PLANT, sy-vline,
  WA_WRMA_S_AB_DOC-PSTNG_DATE, sy-vline,
  WA_WRMA_S_AB_DOC-LOGSYS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WRMA_S_AB_DOC 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_AB_DOC 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_AB_DOC INTO WA_WRMA_S_AB_DOC.


*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 MATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_WRMA_S_AB_DOC-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WRMA_S_AB_DOC-MATERIAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WRMA_S_AB_DOC-LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WRMA_S_AB_DOC-LOGSYS.
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_AB_DOC_STR, 
AB_DOCNR TYPE STRING,
AB_ITEM TYPE STRING,
PLANT TYPE STRING,
AB_USECASE TYPE STRING,
AB_VENDMAT TYPE STRING,
AB_VENDMTP TYPE STRING,
AB_CONDGRP TYPE STRING,
MATERIAL TYPE STRING,
RMA_PLANT TYPE STRING,
PSTNG_DATE TYPE STRING,
LOGSYS TYPE STRING,
PURCH_ORG TYPE STRING,
PUR_GROUP TYPE STRING,
SALESORG TYPE STRING,
DISTR_CHAN TYPE STRING,
COMP_CODE TYPE STRING,
FISCVARNT TYPE STRING,
AB_BILLDOC TYPE STRING,
AB_LFTYP TYPE STRING,
AB_NETVAL TYPE STRING,
AB_TAXVAL TYPE STRING,
AB_CURRCY TYPE STRING,
EXCHG_RATE TYPE STRING,
AB_DISTSTA TYPE STRING,
AB_MAINITM TYPE STRING,
AB_SUBITMX TYPE STRING,
CPPVLC TYPE STRING,
LOC_CURRCY TYPE STRING,
AB_GRSVAL TYPE STRING,
CPSTLC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WRMA_S_AB_DOC_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_AB_DOC_STR-AB_DOCNR sy-vline 
WA_WRMA_S_AB_DOC_STR-AB_ITEM sy-vline 
WA_WRMA_S_AB_DOC_STR-PLANT sy-vline 
WA_WRMA_S_AB_DOC_STR-AB_USECASE sy-vline 
WA_WRMA_S_AB_DOC_STR-AB_VENDMAT sy-vline 
WA_WRMA_S_AB_DOC_STR-AB_VENDMTP sy-vline 
WA_WRMA_S_AB_DOC_STR-AB_CONDGRP sy-vline 
WA_WRMA_S_AB_DOC_STR-MATERIAL sy-vline 
WA_WRMA_S_AB_DOC_STR-RMA_PLANT sy-vline 
WA_WRMA_S_AB_DOC_STR-PSTNG_DATE sy-vline 
WA_WRMA_S_AB_DOC_STR-LOGSYS sy-vline 
WA_WRMA_S_AB_DOC_STR-PURCH_ORG sy-vline 
WA_WRMA_S_AB_DOC_STR-PUR_GROUP sy-vline 
WA_WRMA_S_AB_DOC_STR-SALESORG sy-vline 
WA_WRMA_S_AB_DOC_STR-DISTR_CHAN sy-vline 
WA_WRMA_S_AB_DOC_STR-COMP_CODE sy-vline 
WA_WRMA_S_AB_DOC_STR-FISCVARNT sy-vline 
WA_WRMA_S_AB_DOC_STR-AB_BILLDOC sy-vline 
WA_WRMA_S_AB_DOC_STR-AB_LFTYP sy-vline 
WA_WRMA_S_AB_DOC_STR-AB_NETVAL sy-vline 
WA_WRMA_S_AB_DOC_STR-AB_TAXVAL sy-vline 
WA_WRMA_S_AB_DOC_STR-AB_CURRCY sy-vline 
WA_WRMA_S_AB_DOC_STR-EXCHG_RATE sy-vline 
WA_WRMA_S_AB_DOC_STR-AB_DISTSTA sy-vline 
WA_WRMA_S_AB_DOC_STR-AB_MAINITM sy-vline 
WA_WRMA_S_AB_DOC_STR-AB_SUBITMX sy-vline 
WA_WRMA_S_AB_DOC_STR-CPPVLC sy-vline 
WA_WRMA_S_AB_DOC_STR-LOC_CURRCY sy-vline 
WA_WRMA_S_AB_DOC_STR-AB_GRSVAL sy-vline 
WA_WRMA_S_AB_DOC_STR-CPSTLC sy-vline      INTO ld_text SEPARATED BY SPACE.

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