ABAP Select data from SAP table TPFWE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TPFWE
*  INTO TABLE @DATA(IT_TPFWE2).
*--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_TPFWE INDEX 1 INTO DATA(WA_TPFWE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TPFWE>-PFNAME = 1.
<TPFWE>-AENZEIT = 1.
<TPFWE>-AENDATE = 1.
<TPFWE>-EINSTAL = 1.
<TPFWE>-EINSTAN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TPFWE-ETEMP, sy-vline,
  WA_TPFWE-EHOME, sy-vline,
  WA_TPFWE-EEXECUT, sy-vline,
  WA_TPFWE-EBINARY, sy-vline,
  WA_TPFWE-ELIBRAR, sy-vline,
  WA_TPFWE-ELOGGING, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TPFWE 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_TPFWE 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_TPFWE INTO WA_TPFWE.


*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_TPFWE_STR, 
PFNAME TYPE STRING,
AENZEIT TYPE STRING,
AENDATE TYPE STRING,
EINSTAL TYPE STRING,
EINSTAN TYPE STRING,
ETEMP TYPE STRING,
EHOME TYPE STRING,
EEXECUT TYPE STRING,
EBINARY TYPE STRING,
ELIBRAR TYPE STRING,
ELOGGING TYPE STRING,
ECTLOG TYPE STRING,
EPROTOK TYPE STRING,
EDATAFL TYPE STRING,
EATRA TYPE STRING,
ESORT TYPE STRING,
EPAGE TYPE STRING,
EROLL TYPE STRING,
ERSYN TYPE STRING,
EGREXE TYPE STRING,
EGRLIB TYPE STRING,
ESAPUSR TYPE STRING,
ESYSSPC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TPFWE_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_TPFWE_STR-PFNAME sy-vline 
WA_TPFWE_STR-AENZEIT sy-vline 
WA_TPFWE_STR-AENDATE sy-vline 
WA_TPFWE_STR-EINSTAL sy-vline 
WA_TPFWE_STR-EINSTAN sy-vline 
WA_TPFWE_STR-ETEMP sy-vline 
WA_TPFWE_STR-EHOME sy-vline 
WA_TPFWE_STR-EEXECUT sy-vline 
WA_TPFWE_STR-EBINARY sy-vline 
WA_TPFWE_STR-ELIBRAR sy-vline 
WA_TPFWE_STR-ELOGGING sy-vline 
WA_TPFWE_STR-ECTLOG sy-vline 
WA_TPFWE_STR-EPROTOK sy-vline 
WA_TPFWE_STR-EDATAFL sy-vline 
WA_TPFWE_STR-EATRA sy-vline 
WA_TPFWE_STR-ESORT sy-vline 
WA_TPFWE_STR-EPAGE sy-vline 
WA_TPFWE_STR-EROLL sy-vline 
WA_TPFWE_STR-ERSYN sy-vline 
WA_TPFWE_STR-EGREXE sy-vline 
WA_TPFWE_STR-EGRLIB sy-vline 
WA_TPFWE_STR-ESAPUSR sy-vline 
WA_TPFWE_STR-ESYSSPC sy-vline      INTO ld_text SEPARATED BY SPACE.

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