ABAP Select data from SAP table PFIDOC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PFIDOC
*  INTO TABLE @DATA(IT_PFIDOC2).
*--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_PFIDOC INDEX 1 INTO DATA(WA_PFIDOC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PFIDOC>-MANDT = 1.
<PFIDOC>-COMP = 1.
<PFIDOC>-LOGSYS = 1.
<PFIDOC>-BUKRS = 1.
<PFIDOC>-REF_KEY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PFIDOC-REF_SUBKEY, sy-vline,
  WA_PFIDOC-ITEMTYPE, sy-vline,
  WA_PFIDOC-RLDNR, sy-vline,
  WA_PFIDOC-BLDAT, sy-vline,
  WA_PFIDOC-TTYPE, sy-vline,
  WA_PFIDOC-WSL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PFIDOC 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_PFIDOC 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_PFIDOC INTO WA_PFIDOC.


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

*Conversion exit ALPHA, internal->external for field RLDNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PFIDOC-RLDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PFIDOC-RLDNR.
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_PFIDOC_STR, 
MANDT TYPE STRING,
COMP TYPE STRING,
LOGSYS TYPE STRING,
BUKRS TYPE STRING,
REF_KEY TYPE STRING,
REF_SUBKEY TYPE STRING,
ITEMTYPE TYPE STRING,
RLDNR TYPE STRING,
BLDAT TYPE STRING,
TTYPE TYPE STRING,
WSL TYPE STRING,
HSL TYPE STRING,
KSL TYPE STRING,
OSL TYPE STRING,
VSL TYPE STRING,
BSL TYPE STRING,
CSL TYPE STRING,
DSL TYPE STRING,
ESL TYPE STRING,
FSL TYPE STRING,
GSL TYPE STRING,
MIG_SOURCE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PFIDOC_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_PFIDOC_STR-MANDT sy-vline 
WA_PFIDOC_STR-COMP sy-vline 
WA_PFIDOC_STR-LOGSYS sy-vline 
WA_PFIDOC_STR-BUKRS sy-vline 
WA_PFIDOC_STR-REF_KEY sy-vline 
WA_PFIDOC_STR-REF_SUBKEY sy-vline 
WA_PFIDOC_STR-ITEMTYPE sy-vline 
WA_PFIDOC_STR-RLDNR sy-vline 
WA_PFIDOC_STR-BLDAT sy-vline 
WA_PFIDOC_STR-TTYPE sy-vline 
WA_PFIDOC_STR-WSL sy-vline 
WA_PFIDOC_STR-HSL sy-vline 
WA_PFIDOC_STR-KSL sy-vline 
WA_PFIDOC_STR-OSL sy-vline 
WA_PFIDOC_STR-VSL sy-vline 
WA_PFIDOC_STR-BSL sy-vline 
WA_PFIDOC_STR-CSL sy-vline 
WA_PFIDOC_STR-DSL sy-vline 
WA_PFIDOC_STR-ESL sy-vline 
WA_PFIDOC_STR-FSL sy-vline 
WA_PFIDOC_STR-GSL sy-vline 
WA_PFIDOC_STR-MIG_SOURCE sy-vline      INTO ld_text SEPARATED BY SPACE.

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