ABAP Select data from SAP table PKHD_APV into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PKHD_APV
*  INTO TABLE @DATA(IT_PKHD_APV2).
*--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_PKHD_APV INDEX 1 INTO DATA(WA_PKHD_APV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PKHD_APV>-MANDT = 1.
<PKHD_APV>-PKNUM = 1.
<PKHD_APV>-MATNR = 1.
<PKHD_APV>-WERKS = 1.
<PKHD_APV>-PRVBE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PKHD_APV-BEHAZ, sy-vline,
  WA_PKHD_APV-BEHMG, sy-vline,
  WA_PKHD_APV-VERID, sy-vline,
  WA_PKHD_APV-SIGAZ, sy-vline,
  WA_PKHD_APV-RGVER, sy-vline,
  WA_PKHD_APV-PKOSA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PKHD_APV 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_PKHD_APV 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_PKHD_APV INTO WA_PKHD_APV.


*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_PKHD_APV-PKNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PKHD_APV-PKNUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_PKHD_APV-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PKHD_APV-MATNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit MATN1, internal->external for field PKBHT
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_PKHD_APV-PKBHT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PKHD_APV-PKBHT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PKHD_APV-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PKHD_APV-MEINS.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit SPDEV, internal->external for field VBPRN
CALL FUNCTION 'CONVERSION_EXIT_SPDEV_OUTPUT'
  EXPORTING
    input =                      WA_PKHD_APV-VBPRN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PKHD_APV-VBPRN.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit TSTRN, internal->external for field KWBZM
CALL FUNCTION 'CONVERSION_EXIT_TSTRN_OUTPUT'
  EXPORTING
    input =                      WA_PKHD_APV-KWBZM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PKHD_APV-KWBZM.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field PACKV_EXT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PKHD_APV-PACKV_EXT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PKHD_APV-PACKV_EXT.
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_PKHD_APV_STR, 
MANDT TYPE STRING,
PKNUM TYPE STRING,
MATNR TYPE STRING,
WERKS TYPE STRING,
PRVBE TYPE STRING,
BEHAZ TYPE STRING,
BEHMG TYPE STRING,
VERID TYPE STRING,
SIGAZ TYPE STRING,
RGVER TYPE STRING,
PKOSA TYPE STRING,
PKSTE TYPE STRING,
BERKZ TYPE STRING,
LGNUM TYPE STRING,
LGTYP TYPE STRING,
LGPLA TYPE STRING,
NKDYN TYPE STRING,
PKSTF TYPE STRING,
PKSTU TYPE STRING,
LIFNR TYPE STRING,
EKORG TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
ANSWB TYPE STRING,
PKBHT TYPE STRING,
QUFKT TYPE STRING,
UMLGO TYPE STRING,
MEINS TYPE STRING,
RKSTA TYPE STRING,
KOSTL TYPE STRING,
VBPRN TYPE STRING,
PKDRS TYPE STRING,
PKUMW TYPE STRING,
PKADR TYPE STRING,
PKSFG TYPE STRING,
PKLOG TYPE STRING,
ALSMG TYPE STRING,
ABLAD TYPE STRING,
KCART TYPE STRING,
KCSAF TYPE STRING,
KCCON TYPE STRING,
PKRMG TYPE STRING,
PKFMG TYPE STRING,
KCPRF TYPE STRING,
KWBZD TYPE STRING,
KWBZM TYPE STRING,
VBELN TYPE STRING,
VBELP TYPE STRING,
QUPVB TYPE STRING,
PABPRF TYPE STRING,
PACKV TYPE STRING,
ANZLT TYPE STRING,
PACKV_EXT TYPE STRING,
NLPLA TYPE STRING,
VLPLA TYPE STRING,
PRCTY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PKHD_APV_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_PKHD_APV_STR-MANDT sy-vline 
WA_PKHD_APV_STR-PKNUM sy-vline 
WA_PKHD_APV_STR-MATNR sy-vline 
WA_PKHD_APV_STR-WERKS sy-vline 
WA_PKHD_APV_STR-PRVBE sy-vline 
WA_PKHD_APV_STR-BEHAZ sy-vline 
WA_PKHD_APV_STR-BEHMG sy-vline 
WA_PKHD_APV_STR-VERID sy-vline 
WA_PKHD_APV_STR-SIGAZ sy-vline 
WA_PKHD_APV_STR-RGVER sy-vline 
WA_PKHD_APV_STR-PKOSA sy-vline 
WA_PKHD_APV_STR-PKSTE sy-vline 
WA_PKHD_APV_STR-BERKZ sy-vline 
WA_PKHD_APV_STR-LGNUM sy-vline 
WA_PKHD_APV_STR-LGTYP sy-vline 
WA_PKHD_APV_STR-LGPLA sy-vline 
WA_PKHD_APV_STR-NKDYN sy-vline 
WA_PKHD_APV_STR-PKSTF sy-vline 
WA_PKHD_APV_STR-PKSTU sy-vline 
WA_PKHD_APV_STR-LIFNR sy-vline 
WA_PKHD_APV_STR-EKORG sy-vline 
WA_PKHD_APV_STR-EBELN sy-vline 
WA_PKHD_APV_STR-EBELP sy-vline 
WA_PKHD_APV_STR-ANSWB sy-vline 
WA_PKHD_APV_STR-PKBHT sy-vline 
WA_PKHD_APV_STR-QUFKT sy-vline 
WA_PKHD_APV_STR-UMLGO sy-vline 
WA_PKHD_APV_STR-MEINS sy-vline 
WA_PKHD_APV_STR-RKSTA sy-vline 
WA_PKHD_APV_STR-KOSTL sy-vline 
WA_PKHD_APV_STR-VBPRN sy-vline 
WA_PKHD_APV_STR-PKDRS sy-vline 
WA_PKHD_APV_STR-PKUMW sy-vline 
WA_PKHD_APV_STR-PKADR sy-vline 
WA_PKHD_APV_STR-PKSFG sy-vline 
WA_PKHD_APV_STR-PKLOG sy-vline 
WA_PKHD_APV_STR-ALSMG sy-vline 
WA_PKHD_APV_STR-ABLAD sy-vline 
WA_PKHD_APV_STR-KCART sy-vline 
WA_PKHD_APV_STR-KCSAF sy-vline 
WA_PKHD_APV_STR-KCCON sy-vline 
WA_PKHD_APV_STR-PKRMG sy-vline 
WA_PKHD_APV_STR-PKFMG sy-vline 
WA_PKHD_APV_STR-KCPRF sy-vline 
WA_PKHD_APV_STR-KWBZD sy-vline 
WA_PKHD_APV_STR-KWBZM sy-vline 
WA_PKHD_APV_STR-VBELN sy-vline 
WA_PKHD_APV_STR-VBELP sy-vline 
WA_PKHD_APV_STR-QUPVB sy-vline 
WA_PKHD_APV_STR-PABPRF sy-vline 
WA_PKHD_APV_STR-PACKV sy-vline 
WA_PKHD_APV_STR-ANZLT sy-vline 
WA_PKHD_APV_STR-PACKV_EXT sy-vline 
WA_PKHD_APV_STR-NLPLA sy-vline 
WA_PKHD_APV_STR-VLPLA sy-vline 
WA_PKHD_APV_STR-PRCTY sy-vline      INTO ld_text SEPARATED BY SPACE.

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