ABAP Select data from SAP table PFI_TCDU_AUTH into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PFI_TCDU_AUTH
*  INTO TABLE @DATA(IT_PFI_TCDU_AUTH2).
*--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_PFI_TCDU_AUTH INDEX 1 INTO DATA(WA_PFI_TCDU_AUTH2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PFI_TCDU_AUTH>-VKESS = 1.
<PFI_TCDU_AUTH>-TYEAR = 1.
<PFI_TCDU_AUTH>-PERID = 1.
<PFI_TCDU_AUTH>-TRQID = 1.
<PFI_TCDU_AUTH>-TXRNO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PFI_TCDU_AUTH-TPERS, sy-vline,
  WA_PFI_TCDU_AUTH-RQTYP, sy-vline,
  WA_PFI_TCDU_AUTH-ITNFG, sy-vline,
  WA_PFI_TCDU_AUTH-PBENE, sy-vline,
  WA_PFI_TCDU_AUTH-NUSE1, sy-vline,
  WA_PFI_TCDU_AUTH-TXMA4, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PFI_TCDU_AUTH 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_PFI_TCDU_AUTH 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_PFI_TCDU_AUTH INTO WA_PFI_TCDU_AUTH.


*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_PFI_TCDU_AUTH_STR, 
VKESS TYPE STRING,
TYEAR TYPE STRING,
PERID TYPE STRING,
TRQID TYPE STRING,
TXRNO TYPE STRING,
TPERS TYPE STRING,
RQTYP TYPE STRING,
ITNFG TYPE STRING,
PBENE TYPE STRING,
NUSE1 TYPE STRING,
TXMA4 TYPE STRING,
TSPEC TYPE STRING,
RAT01 TYPE STRING,
TXM01 TYPE STRING,
RAT02 TYPE STRING,
RATP1 TYPE STRING,
RATA1 TYPE STRING,
TXMA1 TYPE STRING,
RATA2 TYPE STRING,
RAT13 TYPE STRING,
TAUTH TYPE STRING,
ITXNO TYPE STRING,
NUSE2 TYPE STRING,
ICODE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PFI_TCDU_AUTH_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_PFI_TCDU_AUTH_STR-VKESS sy-vline 
WA_PFI_TCDU_AUTH_STR-TYEAR sy-vline 
WA_PFI_TCDU_AUTH_STR-PERID sy-vline 
WA_PFI_TCDU_AUTH_STR-TRQID sy-vline 
WA_PFI_TCDU_AUTH_STR-TXRNO sy-vline 
WA_PFI_TCDU_AUTH_STR-TPERS sy-vline 
WA_PFI_TCDU_AUTH_STR-RQTYP sy-vline 
WA_PFI_TCDU_AUTH_STR-ITNFG sy-vline 
WA_PFI_TCDU_AUTH_STR-PBENE sy-vline 
WA_PFI_TCDU_AUTH_STR-NUSE1 sy-vline 
WA_PFI_TCDU_AUTH_STR-TXMA4 sy-vline 
WA_PFI_TCDU_AUTH_STR-TSPEC sy-vline 
WA_PFI_TCDU_AUTH_STR-RAT01 sy-vline 
WA_PFI_TCDU_AUTH_STR-TXM01 sy-vline 
WA_PFI_TCDU_AUTH_STR-RAT02 sy-vline 
WA_PFI_TCDU_AUTH_STR-RATP1 sy-vline 
WA_PFI_TCDU_AUTH_STR-RATA1 sy-vline 
WA_PFI_TCDU_AUTH_STR-TXMA1 sy-vline 
WA_PFI_TCDU_AUTH_STR-RATA2 sy-vline 
WA_PFI_TCDU_AUTH_STR-RAT13 sy-vline 
WA_PFI_TCDU_AUTH_STR-TAUTH sy-vline 
WA_PFI_TCDU_AUTH_STR-ITXNO sy-vline 
WA_PFI_TCDU_AUTH_STR-NUSE2 sy-vline 
WA_PFI_TCDU_AUTH_STR-ICODE sy-vline      INTO ld_text SEPARATED BY SPACE.

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