ABAP Select data from SAP table WZRE_BSID_VIEW into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WZRE_BSID_VIEW
*  INTO TABLE @DATA(IT_WZRE_BSID_VIEW2).
*--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_WZRE_BSID_VIEW INDEX 1 INTO DATA(WA_WZRE_BSID_VIEW2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WZRE_BSID_VIEW>-CUSTOMER_NAME = 1.
<WZRE_BSID_VIEW>-WRBTR = 1.
<WZRE_BSID_VIEW>-WAERS = 1.
<WZRE_BSID_VIEW>-ZUONR = 1.
<WZRE_BSID_VIEW>-BUDAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WZRE_BSID_VIEW-BELNR, sy-vline,
  WA_WZRE_BSID_VIEW-BLDAT, sy-vline,
  WA_WZRE_BSID_VIEW-BUZEI, sy-vline,
  WA_WZRE_BSID_VIEW-XNEGP, sy-vline,
  WA_WZRE_BSID_VIEW-MANST, sy-vline,
  WA_WZRE_BSID_VIEW-SKFBT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WZRE_BSID_VIEW 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_WZRE_BSID_VIEW 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_WZRE_BSID_VIEW INTO WA_WZRE_BSID_VIEW.


*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.

*Conversion exit ALPHA, internal->external for field BELNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WZRE_BSID_VIEW-BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WZRE_BSID_VIEW-BELNR.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_WZRE_BSID_VIEW_STR, 
CUSTOMER_NAME TYPE STRING,
WRBTR TYPE STRING,
WAERS TYPE STRING,
ZUONR TYPE STRING,
BUDAT TYPE STRING,
BELNR TYPE STRING,
BLDAT TYPE STRING,
BUZEI TYPE STRING,
XNEGP TYPE STRING,
MANST TYPE STRING,
SKFBT TYPE STRING,
ZFBDT TYPE STRING,
ZBD1T TYPE STRING,
ZBD1P TYPE STRING,
WMWST TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WZRE_BSID_VIEW_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_WZRE_BSID_VIEW_STR-CUSTOMER_NAME sy-vline 
WA_WZRE_BSID_VIEW_STR-WRBTR sy-vline 
WA_WZRE_BSID_VIEW_STR-WAERS sy-vline 
WA_WZRE_BSID_VIEW_STR-ZUONR sy-vline 
WA_WZRE_BSID_VIEW_STR-BUDAT sy-vline 
WA_WZRE_BSID_VIEW_STR-BELNR sy-vline 
WA_WZRE_BSID_VIEW_STR-BLDAT sy-vline 
WA_WZRE_BSID_VIEW_STR-BUZEI sy-vline 
WA_WZRE_BSID_VIEW_STR-XNEGP sy-vline 
WA_WZRE_BSID_VIEW_STR-MANST sy-vline 
WA_WZRE_BSID_VIEW_STR-SKFBT sy-vline 
WA_WZRE_BSID_VIEW_STR-ZFBDT sy-vline 
WA_WZRE_BSID_VIEW_STR-ZBD1T sy-vline 
WA_WZRE_BSID_VIEW_STR-ZBD1P sy-vline 
WA_WZRE_BSID_VIEW_STR-WMWST sy-vline      INTO ld_text SEPARATED BY SPACE.

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