ABAP Select data from SAP table PSG_PDF_FILE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PSG_PDF_FILE
*  INTO TABLE @DATA(IT_PSG_PDF_FILE2).
*--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_PSG_PDF_FILE INDEX 1 INTO DATA(WA_PSG_PDF_FILE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PSG_PDF_FILE>-PERNR = 1.
<PSG_PDF_FILE>-FINDX = 1.
<PSG_PDF_FILE>-FDATE = 1.
<PSG_PDF_FILE>-FTIME = 1.
<PSG_PDF_FILE>-FSIZE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PSG_PDF_FILE-FPATH, sy-vline,
  WA_PSG_PDF_FILE-FPREX, sy-vline,
  WA_PSG_PDF_FILE-FNAME, sy-vline,
  WA_PSG_PDF_FILE-FPAGE, sy-vline,
  WA_PSG_PDF_FILE-XPDF, sy-vline,
  WA_PSG_PDF_FILE-CONTENT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PSG_PDF_FILE 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_PSG_PDF_FILE 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_PSG_PDF_FILE INTO WA_PSG_PDF_FILE.


*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_PSG_PDF_FILE_STR, 
PERNR TYPE STRING,
FINDX TYPE STRING,
FDATE TYPE STRING,
FTIME TYPE STRING,
FSIZE TYPE STRING,
FPATH TYPE STRING,
FPREX TYPE STRING,
FNAME TYPE STRING,
FPAGE TYPE STRING,
XPDF TYPE STRING,
CONTENT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PSG_PDF_FILE_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_PSG_PDF_FILE_STR-PERNR sy-vline 
WA_PSG_PDF_FILE_STR-FINDX sy-vline 
WA_PSG_PDF_FILE_STR-FDATE sy-vline 
WA_PSG_PDF_FILE_STR-FTIME sy-vline 
WA_PSG_PDF_FILE_STR-FSIZE sy-vline 
WA_PSG_PDF_FILE_STR-FPATH sy-vline 
WA_PSG_PDF_FILE_STR-FPREX sy-vline 
WA_PSG_PDF_FILE_STR-FNAME sy-vline 
WA_PSG_PDF_FILE_STR-FPAGE sy-vline 
WA_PSG_PDF_FILE_STR-XPDF sy-vline 
WA_PSG_PDF_FILE_STR-CONTENT sy-vline      INTO ld_text SEPARATED BY SPACE.

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