ABAP Select data from SAP table P39_APV_PDF into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P39_APV_PDF 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 P39_APV_PDF. 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 P39_APV_PDF 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_P39_APV_PDF TYPE STANDARD TABLE OF P39_APV_PDF,
      WA_P39_APV_PDF TYPE P39_APV_PDF,
      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: <P39_APV_PDF> TYPE P39_APV_PDF.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P39_APV_PDF.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P39_APV_PDF
  INTO TABLE IT_P39_APV_PDF.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P39_APV_PDF
*  INTO TABLE @DATA(IT_P39_APV_PDF2).
*--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_P39_APV_PDF INDEX 1 INTO DATA(WA_P39_APV_PDF2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P39_APV_PDF ASSIGNING <P39_APV_PDF>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P39_APV_PDF>-INSCD = 1.
<P39_APV_PDF>-INSTX = 1.
<P39_APV_PDF>-DPVOL_TOT = 1.
<P39_APV_PDF>-DPCNV_TOT = 1.
<P39_APV_PDF>-DPTVL_TOT = 1.

ENDLOOP.

LOOP AT IT_P39_APV_PDF INTO WA_P39_APV_PDF.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P39_APV_PDF-BUKRS, sy-vline,
  WA_P39_APV_PDF-BUTXT, sy-vline,
  WA_P39_APV_PDF-RUTER, sy-vline,
  WA_P39_APV_PDF-CODAE, sy-vline,
  WA_P39_APV_PDF-TPCTX, sy-vline,
  WA_P39_APV_PDF-REGIO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P39_APV_PDF 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_P39_APV_PDF 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_P39_APV_PDF INTO WA_P39_APV_PDF.


*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_P39_APV_PDF_STR, 
INSCD TYPE STRING,
INSTX TYPE STRING,
DPVOL_TOT TYPE STRING,
DPCNV_TOT TYPE STRING,
DPTVL_TOT TYPE STRING,
BUKRS TYPE STRING,
BUTXT TYPE STRING,
RUTER TYPE STRING,
CODAE TYPE STRING,
TPCTX TYPE STRING,
REGIO TYPE STRING,
CITY1 TYPE STRING,
CITY2 TYPE STRING,
STRAS TYPE STRING,
TELNR TYPE STRING,
EMAIL TYPE STRING,
NMERL TYPE STRING,
RUTRL TYPE STRING,
EMARL TYPE STRING,
NRTRA TYPE STRING,
ADMUT TYPE STRING,
TELRL TYPE STRING,
FAXNR TYPE STRING,
POBOX TYPE STRING,
PAGES_TAB TYPE STRING,
NRTRAB_REPORT TYPE STRING,
NUM_DETAIL_PAGES TYPE STRING,
WAERS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P39_APV_PDF_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_P39_APV_PDF_STR-INSCD sy-vline 
WA_P39_APV_PDF_STR-INSTX sy-vline 
WA_P39_APV_PDF_STR-DPVOL_TOT sy-vline 
WA_P39_APV_PDF_STR-DPCNV_TOT sy-vline 
WA_P39_APV_PDF_STR-DPTVL_TOT sy-vline 
WA_P39_APV_PDF_STR-BUKRS sy-vline 
WA_P39_APV_PDF_STR-BUTXT sy-vline 
WA_P39_APV_PDF_STR-RUTER sy-vline 
WA_P39_APV_PDF_STR-CODAE sy-vline 
WA_P39_APV_PDF_STR-TPCTX sy-vline 
WA_P39_APV_PDF_STR-REGIO sy-vline 
WA_P39_APV_PDF_STR-CITY1 sy-vline 
WA_P39_APV_PDF_STR-CITY2 sy-vline 
WA_P39_APV_PDF_STR-STRAS sy-vline 
WA_P39_APV_PDF_STR-TELNR sy-vline 
WA_P39_APV_PDF_STR-EMAIL sy-vline 
WA_P39_APV_PDF_STR-NMERL sy-vline 
WA_P39_APV_PDF_STR-RUTRL sy-vline 
WA_P39_APV_PDF_STR-EMARL sy-vline 
WA_P39_APV_PDF_STR-NRTRA sy-vline 
WA_P39_APV_PDF_STR-ADMUT sy-vline 
WA_P39_APV_PDF_STR-TELRL sy-vline 
WA_P39_APV_PDF_STR-FAXNR sy-vline 
WA_P39_APV_PDF_STR-POBOX sy-vline 
WA_P39_APV_PDF_STR-PAGES_TAB sy-vline 
WA_P39_APV_PDF_STR-NRTRAB_REPORT sy-vline 
WA_P39_APV_PDF_STR-NUM_DETAIL_PAGES sy-vline 
WA_P39_APV_PDF_STR-WAERS sy-vline      INTO ld_text SEPARATED BY SPACE.

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