ABAP Select data from SAP table QFOBT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM QFOBT
*  INTO TABLE @DATA(IT_QFOBT2).
*--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_QFOBT INDEX 1 INTO DATA(WA_QFOBT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<QFOBT>-PRUEFLOS = 1.
<QFOBT>-AUFPL = 1.
<QFOBT>-PNLKN = 1.
<QFOBT>-PROBE_INT = 1.
<QFOBT>-PROBENR_PP = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_QFOBT-MERKNR, sy-vline,
  WA_QFOBT-PROBENRMK, sy-vline,
  WA_QFOBT-VORNR, sy-vline,
  WA_QFOBT-VORKTEXT, sy-vline,
  WA_QFOBT-PRFPTTEXT, sy-vline,
  WA_QFOBT-MERKTEXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_QFOBT 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_QFOBT 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_QFOBT INTO WA_QFOBT.


*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 PRUEFLOS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_QFOBT-PRUEFLOS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QFOBT-PRUEFLOS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field VORNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_QFOBT-VORNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QFOBT-VORNR.
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_QFOBT_STR, 
PRUEFLOS TYPE STRING,
AUFPL TYPE STRING,
PNLKN TYPE STRING,
PROBE_INT TYPE STRING,
PROBENR_PP TYPE STRING,
MERKNR TYPE STRING,
PROBENRMK TYPE STRING,
VORNR TYPE STRING,
VORKTEXT TYPE STRING,
PRFPTTEXT TYPE STRING,
MERKTEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_QFOBT_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_QFOBT_STR-PRUEFLOS sy-vline 
WA_QFOBT_STR-AUFPL sy-vline 
WA_QFOBT_STR-PNLKN sy-vline 
WA_QFOBT_STR-PROBE_INT sy-vline 
WA_QFOBT_STR-PROBENR_PP sy-vline 
WA_QFOBT_STR-MERKNR sy-vline 
WA_QFOBT_STR-PROBENRMK sy-vline 
WA_QFOBT_STR-VORNR sy-vline 
WA_QFOBT_STR-VORKTEXT sy-vline 
WA_QFOBT_STR-PRFPTTEXT sy-vline 
WA_QFOBT_STR-MERKTEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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