ABAP Select data from SAP table QAPPW into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM QAPPW
*  INTO TABLE @DATA(IT_QAPPW2).
*--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_QAPPW INDEX 1 INTO DATA(WA_QAPPW2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<QAPPW>-PRUEFLOS = 1.
<QAPPW>-KTEXTMAT = 1.
<QAPPW>-VORNR = 1.
<QAPPW>-VORKTXT = 1.
<QAPPW>-TEILLOS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_QAPPW-PRUEFPKT1, sy-vline,
  WA_QAPPW-PRUEFPKT2, sy-vline,
  WA_QAPPW-PRUEFPKT, sy-vline,
  WA_QAPPW-WERK, sy-vline,
  WA_QAPPW-MATNR, sy-vline,
  WA_QAPPW-CHARG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_QAPPW 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_QAPPW 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_QAPPW INTO WA_QAPPW.


*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_QAPPW-PRUEFLOS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QAPPW-PRUEFLOS.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_QAPPW-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_QAPPW-MATNR.
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_QAPPW_STR, 
PRUEFLOS TYPE STRING,
KTEXTMAT TYPE STRING,
VORNR TYPE STRING,
VORKTXT TYPE STRING,
TEILLOS TYPE STRING,
PRUEFPKT1 TYPE STRING,
PRUEFPKT2 TYPE STRING,
PRUEFPKT TYPE STRING,
WERK TYPE STRING,
MATNR TYPE STRING,
CHARG TYPE STRING,
CHARGNEU TYPE STRING,
TXTTL TYPE STRING,
TXTTLBEW TYPE STRING,
TXTPPBEW TYPE STRING,
VFOLGEAKTI TYPE STRING,
VFOLGETEXT TYPE STRING,
KZOHNETL TYPE STRING,
KZTLMCH TYPE STRING,
KZTLNEU TYPE STRING,
KZCHARG TYPE STRING,
KZCHARGNEU TYPE STRING,
KZCHNEUANL TYPE STRING,
KZCHZUSTD TYPE STRING,
KZCH_ZUS_F TYPE STRING,
KZCH_ZUS_N TYPE STRING,
KZANZ TYPE STRING,
KZTLKL2 TYPE STRING,
KZVORSCHL1 TYPE STRING,
KZVORSCHL2 TYPE STRING,
KZNOMATNR TYPE STRING,
LTEXTKZ TYPE STRING,
GRUND TYPE STRING,
AUERU TYPE STRING,
KZTRM TYPE STRING,
KZERM TYPE STRING,
KZNRM TYPE STRING,
QPPKTABS TYPE STRING,
QKZ_USER_FIELD TYPE STRING,
LGORT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_QAPPW_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_QAPPW_STR-PRUEFLOS sy-vline 
WA_QAPPW_STR-KTEXTMAT sy-vline 
WA_QAPPW_STR-VORNR sy-vline 
WA_QAPPW_STR-VORKTXT sy-vline 
WA_QAPPW_STR-TEILLOS sy-vline 
WA_QAPPW_STR-PRUEFPKT1 sy-vline 
WA_QAPPW_STR-PRUEFPKT2 sy-vline 
WA_QAPPW_STR-PRUEFPKT sy-vline 
WA_QAPPW_STR-WERK sy-vline 
WA_QAPPW_STR-MATNR sy-vline 
WA_QAPPW_STR-CHARG sy-vline 
WA_QAPPW_STR-CHARGNEU sy-vline 
WA_QAPPW_STR-TXTTL sy-vline 
WA_QAPPW_STR-TXTTLBEW sy-vline 
WA_QAPPW_STR-TXTPPBEW sy-vline 
WA_QAPPW_STR-VFOLGEAKTI sy-vline 
WA_QAPPW_STR-VFOLGETEXT sy-vline 
WA_QAPPW_STR-KZOHNETL sy-vline 
WA_QAPPW_STR-KZTLMCH sy-vline 
WA_QAPPW_STR-KZTLNEU sy-vline 
WA_QAPPW_STR-KZCHARG sy-vline 
WA_QAPPW_STR-KZCHARGNEU sy-vline 
WA_QAPPW_STR-KZCHNEUANL sy-vline 
WA_QAPPW_STR-KZCHZUSTD sy-vline 
WA_QAPPW_STR-KZCH_ZUS_F sy-vline 
WA_QAPPW_STR-KZCH_ZUS_N sy-vline 
WA_QAPPW_STR-KZANZ sy-vline 
WA_QAPPW_STR-KZTLKL2 sy-vline 
WA_QAPPW_STR-KZVORSCHL1 sy-vline 
WA_QAPPW_STR-KZVORSCHL2 sy-vline 
WA_QAPPW_STR-KZNOMATNR sy-vline 
WA_QAPPW_STR-LTEXTKZ sy-vline 
WA_QAPPW_STR-GRUND sy-vline 
WA_QAPPW_STR-AUERU sy-vline 
WA_QAPPW_STR-KZTRM sy-vline 
WA_QAPPW_STR-KZERM sy-vline 
WA_QAPPW_STR-KZNRM sy-vline 
WA_QAPPW_STR-QPPKTABS sy-vline 
WA_QAPPW_STR-QKZ_USER_FIELD sy-vline 
WA_QAPPW_STR-LGORT sy-vline      INTO ld_text SEPARATED BY SPACE.

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