ABAP Select data from SAP table QPAPL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM QPAPL
*  INTO TABLE @DATA(IT_QPAPL2).
*--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_QPAPL INDEX 1 INTO DATA(WA_QPAPL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<QPAPL>-OPTI1 = 1.
<QPAPL>-OPTI2 = 1.
<QPAPL>-SELEC = 1.
<QPAPL>-PLSTX = 1.
<QPAPL>-CLTXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_QPAPL-INBUK, sy-vline,
  WA_QPAPL-INWER, sy-vline,
  WA_QPAPL-INBTR, sy-vline,
  WA_QPAPL-LINE1, sy-vline,
  WA_QPAPL-LINE2, sy-vline,
  WA_QPAPL-LINE3, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_QPAPL 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_QPAPL 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_QPAPL INTO WA_QPAPL.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_QPAPL_STR, 
OPTI1 TYPE STRING,
OPTI2 TYPE STRING,
SELEC TYPE STRING,
PLSTX TYPE STRING,
CLTXT TYPE STRING,
INBUK TYPE STRING,
INWER TYPE STRING,
INBTR TYPE STRING,
LINE1 TYPE STRING,
LINE2 TYPE STRING,
LINE3 TYPE STRING,
LINE4 TYPE STRING,
SYTEXT TYPE STRING,
EMNUM TYPE STRING,
EMTOT TYPE STRING,
EDNUM TYPE STRING,
EDTOT TYPE STRING,
QUNUM TYPE STRING,
QUTOT TYPE STRING,
BWNUM TYPE STRING,
BWTOT TYPE STRING,
TABIX TYPE STRING,
ADD_0001 TYPE STRING,
ADD_0002 TYPE STRING,
ADD_0006 TYPE STRING,
ADD_4001 TYPE STRING,
OPTAR TYPE STRING,
REGI1 TYPE STRING,
REGI2 TYPE STRING,
STAT1 TYPE STRING,
STAT2 TYPE STRING,
STAT3 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_QPAPL_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_QPAPL_STR-OPTI1 sy-vline 
WA_QPAPL_STR-OPTI2 sy-vline 
WA_QPAPL_STR-SELEC sy-vline 
WA_QPAPL_STR-PLSTX sy-vline 
WA_QPAPL_STR-CLTXT sy-vline 
WA_QPAPL_STR-INBUK sy-vline 
WA_QPAPL_STR-INWER sy-vline 
WA_QPAPL_STR-INBTR sy-vline 
WA_QPAPL_STR-LINE1 sy-vline 
WA_QPAPL_STR-LINE2 sy-vline 
WA_QPAPL_STR-LINE3 sy-vline 
WA_QPAPL_STR-LINE4 sy-vline 
WA_QPAPL_STR-SYTEXT sy-vline 
WA_QPAPL_STR-EMNUM sy-vline 
WA_QPAPL_STR-EMTOT sy-vline 
WA_QPAPL_STR-EDNUM sy-vline 
WA_QPAPL_STR-EDTOT sy-vline 
WA_QPAPL_STR-QUNUM sy-vline 
WA_QPAPL_STR-QUTOT sy-vline 
WA_QPAPL_STR-BWNUM sy-vline 
WA_QPAPL_STR-BWTOT sy-vline 
WA_QPAPL_STR-TABIX sy-vline 
WA_QPAPL_STR-ADD_0001 sy-vline 
WA_QPAPL_STR-ADD_0002 sy-vline 
WA_QPAPL_STR-ADD_0006 sy-vline 
WA_QPAPL_STR-ADD_4001 sy-vline 
WA_QPAPL_STR-OPTAR sy-vline 
WA_QPAPL_STR-REGI1 sy-vline 
WA_QPAPL_STR-REGI2 sy-vline 
WA_QPAPL_STR-STAT1 sy-vline 
WA_QPAPL_STR-STAT2 sy-vline 
WA_QPAPL_STR-STAT3 sy-vline      INTO ld_text SEPARATED BY SPACE.

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