ABAP Select data from SAP table TPFID into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TPFID
*  INTO TABLE @DATA(IT_TPFID2).
*--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_TPFID INDEX 1 INTO DATA(WA_TPFID2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TPFID>-INSTNAME = 1.
<TPFID>-HOST = 1.
<TPFID>-TYPE = 1.
<TPFID>-BANAME = 1.
<TPFID>-SYSNAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TPFID-SYSNR, sy-vline,
  WA_TPFID-APSERVER, sy-vline,
  WA_TPFID-STATUS, sy-vline,
  WA_TPFID-CMPON, sy-vline,
  WA_TPFID-PFINST, sy-vline,
  WA_TPFID-PFSTART, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TPFID 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_TPFID 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_TPFID INTO WA_TPFID.


*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_TPFID_STR, 
INSTNAME TYPE STRING,
HOST TYPE STRING,
TYPE TYPE STRING,
BANAME TYPE STRING,
SYSNAME TYPE STRING,
SYSNR TYPE STRING,
APSERVER TYPE STRING,
STATUS TYPE STRING,
CMPON TYPE STRING,
PFINST TYPE STRING,
PFSTART TYPE STRING,
HOMEDIR TYPE STRING,
USERNAME TYPE STRING,
PASSWD TYPE STRING,
WPNODIA TYPE STRING,
WPNOVB TYPE STRING,
WPNOBTC TYPE STRING,
WPNOENQ TYPE STRING,
WPNOSPO TYPE STRING,
WPNO TYPE STRING,
WPNOBTCA TYPE STRING,
SRVDIA TYPE STRING,
SRVVB TYPE STRING,
SRVBTC TYPE STRING,
SRVENQ TYPE STRING,
SRVSPO TYPE STRING,
SRVMSG TYPE STRING,
SRVGW TYPE STRING,
OPSYS TYPE STRING,
WPNOV2 TYPE STRING,
WPNORES1 TYPE STRING,
WPNORES2 TYPE STRING,
SRVV2 TYPE STRING,
SRVRES1 TYPE STRING,
SRVRES2 TYPE STRING,
PFLINSNAME TYPE STRING,
PFLSTRNAME TYPE STRING,
WPNORES TYPE STRING,
WPMAXNO TYPE STRING,
SRVDYNWP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TPFID_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_TPFID_STR-INSTNAME sy-vline 
WA_TPFID_STR-HOST sy-vline 
WA_TPFID_STR-TYPE sy-vline 
WA_TPFID_STR-BANAME sy-vline 
WA_TPFID_STR-SYSNAME sy-vline 
WA_TPFID_STR-SYSNR sy-vline 
WA_TPFID_STR-APSERVER sy-vline 
WA_TPFID_STR-STATUS sy-vline 
WA_TPFID_STR-CMPON sy-vline 
WA_TPFID_STR-PFINST sy-vline 
WA_TPFID_STR-PFSTART sy-vline 
WA_TPFID_STR-HOMEDIR sy-vline 
WA_TPFID_STR-USERNAME sy-vline 
WA_TPFID_STR-PASSWD sy-vline 
WA_TPFID_STR-WPNODIA sy-vline 
WA_TPFID_STR-WPNOVB sy-vline 
WA_TPFID_STR-WPNOBTC sy-vline 
WA_TPFID_STR-WPNOENQ sy-vline 
WA_TPFID_STR-WPNOSPO sy-vline 
WA_TPFID_STR-WPNO sy-vline 
WA_TPFID_STR-WPNOBTCA sy-vline 
WA_TPFID_STR-SRVDIA sy-vline 
WA_TPFID_STR-SRVVB sy-vline 
WA_TPFID_STR-SRVBTC sy-vline 
WA_TPFID_STR-SRVENQ sy-vline 
WA_TPFID_STR-SRVSPO sy-vline 
WA_TPFID_STR-SRVMSG sy-vline 
WA_TPFID_STR-SRVGW sy-vline 
WA_TPFID_STR-OPSYS sy-vline 
WA_TPFID_STR-WPNOV2 sy-vline 
WA_TPFID_STR-WPNORES1 sy-vline 
WA_TPFID_STR-WPNORES2 sy-vline 
WA_TPFID_STR-SRVV2 sy-vline 
WA_TPFID_STR-SRVRES1 sy-vline 
WA_TPFID_STR-SRVRES2 sy-vline 
WA_TPFID_STR-PFLINSNAME sy-vline 
WA_TPFID_STR-PFLSTRNAME sy-vline 
WA_TPFID_STR-WPNORES sy-vline 
WA_TPFID_STR-WPMAXNO sy-vline 
WA_TPFID_STR-SRVDYNWP sy-vline      INTO ld_text SEPARATED BY SPACE.

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