ABAP Select data from SAP table TPFYWPBUF into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TPFYWPBUF
*  INTO TABLE @DATA(IT_TPFYWPBUF2).
*--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_TPFYWPBUF INDEX 1 INTO DATA(WA_TPFYWPBUF2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TPFYWPBUF>-STOALL = 1.
<TPFYWPBUF>-STOWP = 1.
<TPFYWPBUF>-STOBUF = 1.
<TPFYWPBUF>-STOPXA = 1.
<TPFYWPBUF>-STONTAB = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TPFYWPBUF-STOTB100, sy-vline,
  WA_TPFYWPBUF-STOTBLRU, sy-vline,
  WA_TPFYWPBUF-STOCUA, sy-vline,
  WA_TPFYWPBUF-STOPRES, sy-vline,
  WA_TPFYWPBUF-WPNODIA, sy-vline,
  WA_TPFYWPBUF-WPNOVB, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TPFYWPBUF 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_TPFYWPBUF 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_TPFYWPBUF INTO WA_TPFYWPBUF.


*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_TPFYWPBUF_STR, 
STOALL TYPE STRING,
STOWP TYPE STRING,
STOBUF TYPE STRING,
STOPXA TYPE STRING,
STONTAB TYPE STRING,
STOTB100 TYPE STRING,
STOTBLRU TYPE STRING,
STOCUA TYPE STRING,
STOPRES TYPE STRING,
WPNODIA TYPE STRING,
WPNOVB TYPE STRING,
WPNOENQ TYPE STRING,
WPNOBTC TYPE STRING,
WPNOSPO TYPE STRING,
WPNORES TYPE STRING,
WPMAXNO TYPE STRING,
WPMAXCONFIG TYPE STRING,
WPNOALL TYPE STRING,
WPDYNCHECK TYPE STRING,
WPCANO TYPE STRING,
APCANO TYPE STRING,
SYSTEMNAME TYPE STRING,
SYSTEMNR TYPE STRING,
INSTANCENM TYPE STRING,
WPNOV2B TYPE STRING,
SHORTAREA TYPE STRING,
OLDENTRYCT TYPE STRING,
OLDFTABSIZ TYPE STRING,
OLDIRBDSIZ TYPE STRING,
OLDSNTABSZ TYPE STRING,
OLDNTABSZ TYPE STRING,
MAXSWAPSP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TPFYWPBUF_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_TPFYWPBUF_STR-STOALL sy-vline 
WA_TPFYWPBUF_STR-STOWP sy-vline 
WA_TPFYWPBUF_STR-STOBUF sy-vline 
WA_TPFYWPBUF_STR-STOPXA sy-vline 
WA_TPFYWPBUF_STR-STONTAB sy-vline 
WA_TPFYWPBUF_STR-STOTB100 sy-vline 
WA_TPFYWPBUF_STR-STOTBLRU sy-vline 
WA_TPFYWPBUF_STR-STOCUA sy-vline 
WA_TPFYWPBUF_STR-STOPRES sy-vline 
WA_TPFYWPBUF_STR-WPNODIA sy-vline 
WA_TPFYWPBUF_STR-WPNOVB sy-vline 
WA_TPFYWPBUF_STR-WPNOENQ sy-vline 
WA_TPFYWPBUF_STR-WPNOBTC sy-vline 
WA_TPFYWPBUF_STR-WPNOSPO sy-vline 
WA_TPFYWPBUF_STR-WPNORES sy-vline 
WA_TPFYWPBUF_STR-WPMAXNO sy-vline 
WA_TPFYWPBUF_STR-WPMAXCONFIG sy-vline 
WA_TPFYWPBUF_STR-WPNOALL sy-vline 
WA_TPFYWPBUF_STR-WPDYNCHECK sy-vline 
WA_TPFYWPBUF_STR-WPCANO sy-vline 
WA_TPFYWPBUF_STR-APCANO sy-vline 
WA_TPFYWPBUF_STR-SYSTEMNAME sy-vline 
WA_TPFYWPBUF_STR-SYSTEMNR sy-vline 
WA_TPFYWPBUF_STR-INSTANCENM sy-vline 
WA_TPFYWPBUF_STR-WPNOV2B sy-vline 
WA_TPFYWPBUF_STR-SHORTAREA sy-vline 
WA_TPFYWPBUF_STR-OLDENTRYCT sy-vline 
WA_TPFYWPBUF_STR-OLDFTABSIZ sy-vline 
WA_TPFYWPBUF_STR-OLDIRBDSIZ sy-vline 
WA_TPFYWPBUF_STR-OLDSNTABSZ sy-vline 
WA_TPFYWPBUF_STR-OLDNTABSZ sy-vline 
WA_TPFYWPBUF_STR-MAXSWAPSP sy-vline      INTO ld_text SEPARATED BY SPACE.

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