ABAP Select data from SAP table RFC_VIQMFE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RFC_VIQMFE
*  INTO TABLE @DATA(IT_RFC_VIQMFE2).
*--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_RFC_VIQMFE INDEX 1 INTO DATA(WA_RFC_VIQMFE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RFC_VIQMFE>-FENUM = 1.
<RFC_VIQMFE>-FETXT = 1.
<RFC_VIQMFE>-FEKAT = 1.
<RFC_VIQMFE>-FEGRP = 1.
<RFC_VIQMFE>-FECOD = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RFC_VIQMFE-OTKAT, sy-vline,
  WA_RFC_VIQMFE-OTGRP, sy-vline,
  WA_RFC_VIQMFE-OTEIL, sy-vline,
  WA_RFC_VIQMFE-BAUTL, sy-vline,
  WA_RFC_VIQMFE-POSNR, sy-vline,
  WA_RFC_VIQMFE-FEQKLAS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RFC_VIQMFE 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_RFC_VIQMFE 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_RFC_VIQMFE INTO WA_RFC_VIQMFE.


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

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

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

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

*Conversion exit TPLNR, internal->external for field TPLNR
CALL FUNCTION 'CONVERSION_EXIT_TPLNR_OUTPUT'
  EXPORTING
    input =                      WA_RFC_VIQMFE-TPLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFC_VIQMFE-TPLNR.
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_RFC_VIQMFE_STR, 
FENUM TYPE STRING,
FETXT TYPE STRING,
FEKAT TYPE STRING,
FEGRP TYPE STRING,
FECOD TYPE STRING,
OTKAT TYPE STRING,
OTGRP TYPE STRING,
OTEIL TYPE STRING,
BAUTL TYPE STRING,
POSNR TYPE STRING,
FEQKLAS TYPE STRING,
FMGFRD TYPE STRING,
FMGEIG TYPE STRING,
ANZFEHLER TYPE STRING,
FEHLBEW TYPE STRING,
PHYNR TYPE STRING,
PRUEFLINR TYPE STRING,
INDTX TYPE STRING,
KZMLA TYPE STRING,
REFOBJKEY TYPE STRING,
KZSYSFE TYPE STRING,
EQUNR TYPE STRING,
TPLNR TYPE STRING,
DEFREFNUM TYPE STRING,
REPUSER TYPE STRING,
REPONDATE TYPE STRING,
REPATTIME TYPE STRING,
FEART TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RFC_VIQMFE_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_RFC_VIQMFE_STR-FENUM sy-vline 
WA_RFC_VIQMFE_STR-FETXT sy-vline 
WA_RFC_VIQMFE_STR-FEKAT sy-vline 
WA_RFC_VIQMFE_STR-FEGRP sy-vline 
WA_RFC_VIQMFE_STR-FECOD sy-vline 
WA_RFC_VIQMFE_STR-OTKAT sy-vline 
WA_RFC_VIQMFE_STR-OTGRP sy-vline 
WA_RFC_VIQMFE_STR-OTEIL sy-vline 
WA_RFC_VIQMFE_STR-BAUTL sy-vline 
WA_RFC_VIQMFE_STR-POSNR sy-vline 
WA_RFC_VIQMFE_STR-FEQKLAS sy-vline 
WA_RFC_VIQMFE_STR-FMGFRD sy-vline 
WA_RFC_VIQMFE_STR-FMGEIG sy-vline 
WA_RFC_VIQMFE_STR-ANZFEHLER sy-vline 
WA_RFC_VIQMFE_STR-FEHLBEW sy-vline 
WA_RFC_VIQMFE_STR-PHYNR sy-vline 
WA_RFC_VIQMFE_STR-PRUEFLINR sy-vline 
WA_RFC_VIQMFE_STR-INDTX sy-vline 
WA_RFC_VIQMFE_STR-KZMLA sy-vline 
WA_RFC_VIQMFE_STR-REFOBJKEY sy-vline 
WA_RFC_VIQMFE_STR-KZSYSFE sy-vline 
WA_RFC_VIQMFE_STR-EQUNR sy-vline 
WA_RFC_VIQMFE_STR-TPLNR sy-vline 
WA_RFC_VIQMFE_STR-DEFREFNUM sy-vline 
WA_RFC_VIQMFE_STR-REPUSER sy-vline 
WA_RFC_VIQMFE_STR-REPONDATE sy-vline 
WA_RFC_VIQMFE_STR-REPATTIME sy-vline 
WA_RFC_VIQMFE_STR-FEART sy-vline      INTO ld_text SEPARATED BY SPACE.

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