ABAP Select data from SAP table PKPV8 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PKPV8 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 PKPV8. 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 PKPV8 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_PKPV8 TYPE STANDARD TABLE OF PKPV8,
      WA_PKPV8 TYPE PKPV8,
      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: <PKPV8> TYPE PKPV8.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PKPV8.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PKPV8
  INTO TABLE IT_PKPV8.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PKPV8
*  INTO TABLE @DATA(IT_PKPV82).
*--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_PKPV8 INDEX 1 INTO DATA(WA_PKPV82).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PKPV8 ASSIGNING <PKPV8>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PKPV8>-MANDT = 1.
<PKPV8>-PKKEY = 1.
<PKPV8>-PKNUM = 1.
<PKPV8>-PKPOS = 1.
<PKPV8>-PKBST = 1.

ENDLOOP.

LOOP AT IT_PKPV8 INTO WA_PKPV8.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PKPV8-PKIMG, sy-vline,
  WA_PKPV8-SAEDT, sy-vline,
  WA_PKPV8-SAEUZ, sy-vline,
  WA_PKPV8-SADT2, sy-vline,
  WA_PKPV8-SAUZ2, sy-vline,
  WA_PKPV8-LASTCHANGE_DATETIME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PKPV8 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_PKPV8 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_PKPV8 INTO WA_PKPV8.


*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 PKNUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PKPV8-PKNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PKPV8-PKNUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field MBLNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PKPV8-MBLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PKPV8-MBLNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field MJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_PKPV8-MJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PKPV8-MJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field ZPUNKT
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_PKPV8-ZPUNKT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PKPV8-ZPUNKT.
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_PKPV8_STR, 
MANDT TYPE STRING,
PKKEY TYPE STRING,
PKNUM TYPE STRING,
PKPOS TYPE STRING,
PKBST TYPE STRING,
PKIMG TYPE STRING,
SAEDT TYPE STRING,
SAEUZ TYPE STRING,
SADT2 TYPE STRING,
SAUZ2 TYPE STRING,
LASTCHANGE_DATETIME TYPE STRING,
DUMMY_KANBAN_CTN_INCL_EEW_PS TYPE STRING,
SPKKZ TYPE STRING,
MBLNR TYPE STRING,
MJAHR TYPE STRING,
MBLPO TYPE STRING,
PKLKZ TYPE STRING,
PKBMG TYPE STRING,
PKBSA TYPE STRING,
PKGPZG TYPE STRING,
HDFLG TYPE STRING,
ETENS TYPE STRING,
ZPUNKT TYPE STRING,
PRTNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PKPV8_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_PKPV8_STR-MANDT sy-vline 
WA_PKPV8_STR-PKKEY sy-vline 
WA_PKPV8_STR-PKNUM sy-vline 
WA_PKPV8_STR-PKPOS sy-vline 
WA_PKPV8_STR-PKBST sy-vline 
WA_PKPV8_STR-PKIMG sy-vline 
WA_PKPV8_STR-SAEDT sy-vline 
WA_PKPV8_STR-SAEUZ sy-vline 
WA_PKPV8_STR-SADT2 sy-vline 
WA_PKPV8_STR-SAUZ2 sy-vline 
WA_PKPV8_STR-LASTCHANGE_DATETIME sy-vline 
WA_PKPV8_STR-DUMMY_KANBAN_CTN_INCL_EEW_PS sy-vline 
WA_PKPV8_STR-SPKKZ sy-vline 
WA_PKPV8_STR-MBLNR sy-vline 
WA_PKPV8_STR-MJAHR sy-vline 
WA_PKPV8_STR-MBLPO sy-vline 
WA_PKPV8_STR-PKLKZ sy-vline 
WA_PKPV8_STR-PKBMG sy-vline 
WA_PKPV8_STR-PKBSA sy-vline 
WA_PKPV8_STR-PKGPZG sy-vline 
WA_PKPV8_STR-HDFLG sy-vline 
WA_PKPV8_STR-ETENS sy-vline 
WA_PKPV8_STR-ZPUNKT sy-vline 
WA_PKPV8_STR-PRTNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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