ABAP Select data from SAP table PWBRKA2UC30VH into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PWBRKA2UC30VH 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 PWBRKA2UC30VH. 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 PWBRKA2UC30VH 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_PWBRKA2UC30VH TYPE STANDARD TABLE OF PWBRKA2UC30VH,
      WA_PWBRKA2UC30VH TYPE PWBRKA2UC30VH,
      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: <PWBRKA2UC30VH> TYPE PWBRKA2UC30VH.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PWBRKA2UC30VH.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PWBRKA2UC30VH
  INTO TABLE IT_PWBRKA2UC30VH.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PWBRKA2UC30VH
*  INTO TABLE @DATA(IT_PWBRKA2UC30VH2).
*--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_PWBRKA2UC30VH INDEX 1 INTO DATA(WA_PWBRKA2UC30VH2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PWBRKA2UC30VH ASSIGNING <PWBRKA2UC30VH>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PWBRKA2UC30VH>-MANDT = 1.
<PWBRKA2UC30VH>-WBELN = 1.
<PWBRKA2UC30VH>-LFART = 1.
<PWBRKA2UC30VH>-WFDAT = 1.
<PWBRKA2UC30VH>-EKORG = 1.

ENDLOOP.

LOOP AT IT_PWBRKA2UC30VH INTO WA_PWBRKA2UC30VH.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PWBRKA2UC30VH-EKGRP, sy-vline,
  WA_PWBRKA2UC30VH-BUKRS, sy-vline,
  WA_PWBRKA2UC30VH-ERDAT, sy-vline,
  WA_PWBRKA2UC30VH-ERNAM, sy-vline,
  WA_PWBRKA2UC30VH-RFBSK, sy-vline,
  WA_PWBRKA2UC30VH-VKORG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PWBRKA2UC30VH 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_PWBRKA2UC30VH 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_PWBRKA2UC30VH INTO WA_PWBRKA2UC30VH.


*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 WBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PWBRKA2UC30VH-WBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PWBRKA2UC30VH-WBELN.
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_PWBRKA2UC30VH_STR, 
MANDT TYPE STRING,
WBELN TYPE STRING,
LFART TYPE STRING,
WFDAT TYPE STRING,
EKORG TYPE STRING,
EKGRP TYPE STRING,
BUKRS TYPE STRING,
ERDAT TYPE STRING,
ERNAM TYPE STRING,
RFBSK TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PWBRKA2UC30VH_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_PWBRKA2UC30VH_STR-MANDT sy-vline 
WA_PWBRKA2UC30VH_STR-WBELN sy-vline 
WA_PWBRKA2UC30VH_STR-LFART sy-vline 
WA_PWBRKA2UC30VH_STR-WFDAT sy-vline 
WA_PWBRKA2UC30VH_STR-EKORG sy-vline 
WA_PWBRKA2UC30VH_STR-EKGRP sy-vline 
WA_PWBRKA2UC30VH_STR-BUKRS sy-vline 
WA_PWBRKA2UC30VH_STR-ERDAT sy-vline 
WA_PWBRKA2UC30VH_STR-ERNAM sy-vline 
WA_PWBRKA2UC30VH_STR-RFBSK sy-vline 
WA_PWBRKA2UC30VH_STR-VKORG sy-vline 
WA_PWBRKA2UC30VH_STR-VTWEG sy-vline 
WA_PWBRKA2UC30VH_STR-SPART sy-vline      INTO ld_text SEPARATED BY SPACE.

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