ABAP Select data from SAP table WPBET into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WPBET
*  INTO TABLE @DATA(IT_WPBET2).
*--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_WPBET INDEX 1 INTO DATA(WA_WPBET2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WPBET>-POSNR = 1.
<WPBET>-PDATU = 1.
<WPBET>-PLNMG = 1.
<WPBET>-ENTLI = 1.
<WPBET>-PERXX = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WPBET-ENTLU, sy-vline,
  WA_WPBET-WERT, sy-vline,
  WA_WPBET-WERTT, sy-vline,
  WA_WPBET-WERTW, sy-vline,
  WA_WPBET-WERTM, sy-vline,
  WA_WPBET-WERTP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WPBET 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_WPBET 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_WPBET INTO WA_WPBET.


*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_WPBET_STR, 
POSNR TYPE STRING,
PDATU TYPE STRING,
PLNMG TYPE STRING,
ENTLI TYPE STRING,
PERXX TYPE STRING,
ENTLU TYPE STRING,
WERT TYPE STRING,
WERTT TYPE STRING,
WERTW TYPE STRING,
WERTM TYPE STRING,
WERTP TYPE STRING,
WEDATT TYPE STRING,
WEDATW TYPE STRING,
WEDATM TYPE STRING,
WEDATP TYPE STRING,
PLNMGT TYPE STRING,
PLNMGW TYPE STRING,
PLNMGM TYPE STRING,
PLNMGP TYPE STRING,
BEDAE TYPE STRING,
VERSB TYPE STRING,
PBDNR TYPE STRING,
PEINH TYPE STRING,
CUOBJ TYPE STRING,
TECHS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WPBET_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_WPBET_STR-POSNR sy-vline 
WA_WPBET_STR-PDATU sy-vline 
WA_WPBET_STR-PLNMG sy-vline 
WA_WPBET_STR-ENTLI sy-vline 
WA_WPBET_STR-PERXX sy-vline 
WA_WPBET_STR-ENTLU sy-vline 
WA_WPBET_STR-WERT sy-vline 
WA_WPBET_STR-WERTT sy-vline 
WA_WPBET_STR-WERTW sy-vline 
WA_WPBET_STR-WERTM sy-vline 
WA_WPBET_STR-WERTP sy-vline 
WA_WPBET_STR-WEDATT sy-vline 
WA_WPBET_STR-WEDATW sy-vline 
WA_WPBET_STR-WEDATM sy-vline 
WA_WPBET_STR-WEDATP sy-vline 
WA_WPBET_STR-PLNMGT sy-vline 
WA_WPBET_STR-PLNMGW sy-vline 
WA_WPBET_STR-PLNMGM sy-vline 
WA_WPBET_STR-PLNMGP sy-vline 
WA_WPBET_STR-BEDAE sy-vline 
WA_WPBET_STR-VERSB sy-vline 
WA_WPBET_STR-PBDNR sy-vline 
WA_WPBET_STR-PEINH sy-vline 
WA_WPBET_STR-CUOBJ sy-vline 
WA_WPBET_STR-TECHS sy-vline      INTO ld_text SEPARATED BY SPACE.

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