ABAP Select data from SAP table PPC_APOCOMPLIST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PPC_APOCOMPLIST
*  INTO TABLE @DATA(IT_PPC_APOCOMPLIST2).
*--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_PPC_APOCOMPLIST INDEX 1 INTO DATA(WA_PPC_APOCOMPLIST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PPC_APOCOMPLIST>-HEADID = 1.
<PPC_APOCOMPLIST>-MATNR = 1.
<PPC_APOCOMPLIST>-WERKS = 1.
<PPC_APOCOMPLIST>-LGORT = 1.
<PPC_APOCOMPLIST>-PRVBE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PPC_APOCOMPLIST-CHARG, sy-vline,
  WA_PPC_APOCOMPLIST-GMOVE_IND, sy-vline,
  WA_PPC_APOCOMPLIST-SYNC_IND, sy-vline,
  WA_PPC_APOCOMPLIST-SOBKZ, sy-vline,
  WA_PPC_APOCOMPLIST-KZVBR, sy-vline,
  WA_PPC_APOCOMPLIST-KZBWS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PPC_APOCOMPLIST 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_PPC_APOCOMPLIST 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_PPC_APOCOMPLIST INTO WA_PPC_APOCOMPLIST.


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

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

*Conversion exit ABPSP, internal->external for field PSPNR
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_PPC_APOCOMPLIST-PSPNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PPC_APOCOMPLIST-PSPNR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit CUNIT, internal->external for field CONFUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PPC_APOCOMPLIST-CONFUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PPC_APOCOMPLIST-CONFUNIT.
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_PPC_APOCOMPLIST_STR, 
HEADID TYPE STRING,
MATNR TYPE STRING,
WERKS TYPE STRING,
LGORT TYPE STRING,
PRVBE TYPE STRING,
CHARG TYPE STRING,
GMOVE_IND TYPE STRING,
SYNC_IND TYPE STRING,
SOBKZ TYPE STRING,
KZVBR TYPE STRING,
KZBWS TYPE STRING,
KDAUF TYPE STRING,
KDPOS TYPE STRING,
PSPNR TYPE STRING,
LIFNR TYPE STRING,
KUNNR TYPE STRING,
CONFQUANT TYPE STRING,
CONFUNIT TYPE STRING,
DELTA_CONFQUANT TYPE STRING,
BDTER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PPC_APOCOMPLIST_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_PPC_APOCOMPLIST_STR-HEADID sy-vline 
WA_PPC_APOCOMPLIST_STR-MATNR sy-vline 
WA_PPC_APOCOMPLIST_STR-WERKS sy-vline 
WA_PPC_APOCOMPLIST_STR-LGORT sy-vline 
WA_PPC_APOCOMPLIST_STR-PRVBE sy-vline 
WA_PPC_APOCOMPLIST_STR-CHARG sy-vline 
WA_PPC_APOCOMPLIST_STR-GMOVE_IND sy-vline 
WA_PPC_APOCOMPLIST_STR-SYNC_IND sy-vline 
WA_PPC_APOCOMPLIST_STR-SOBKZ sy-vline 
WA_PPC_APOCOMPLIST_STR-KZVBR sy-vline 
WA_PPC_APOCOMPLIST_STR-KZBWS sy-vline 
WA_PPC_APOCOMPLIST_STR-KDAUF sy-vline 
WA_PPC_APOCOMPLIST_STR-KDPOS sy-vline 
WA_PPC_APOCOMPLIST_STR-PSPNR sy-vline 
WA_PPC_APOCOMPLIST_STR-LIFNR sy-vline 
WA_PPC_APOCOMPLIST_STR-KUNNR sy-vline 
WA_PPC_APOCOMPLIST_STR-CONFQUANT sy-vline 
WA_PPC_APOCOMPLIST_STR-CONFUNIT sy-vline 
WA_PPC_APOCOMPLIST_STR-DELTA_CONFQUANT sy-vline 
WA_PPC_APOCOMPLIST_STR-BDTER sy-vline      INTO ld_text SEPARATED BY SPACE.

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