ABAP Select data from SAP table RPUAOBK0L0 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RPUAOBK0L0 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 RPUAOBK0L0. 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 RPUAOBK0L0 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_RPUAOBK0L0 TYPE STANDARD TABLE OF RPUAOBK0L0,
      WA_RPUAOBK0L0 TYPE RPUAOBK0L0,
      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: <RPUAOBK0L0> TYPE RPUAOBK0L0.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RPUAOBK0L0.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RPUAOBK0L0
  INTO TABLE IT_RPUAOBK0L0.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RPUAOBK0L0
*  INTO TABLE @DATA(IT_RPUAOBK0L02).
*--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_RPUAOBK0L0 INDEX 1 INTO DATA(WA_RPUAOBK0L02).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RPUAOBK0L0 ASSIGNING <RPUAOBK0L0>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RPUAOBK0L0>-PERNR = 1.
<RPUAOBK0L0>-SEQNR = 1.
<RPUAOBK0L0>-ABKRS = 1.
<RPUAOBK0L0>-PAYID = 1.
<RPUAOBK0L0>-PAYTY = 1.

ENDLOOP.

LOOP AT IT_RPUAOBK0L0 INTO WA_RPUAOBK0L0.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RPUAOBK0L0-BONDT, sy-vline,
  WA_RPUAOBK0L0-BEGDA, sy-vline,
  WA_RPUAOBK0L0-SUBTY, sy-vline,
  WA_RPUAOBK0L0-PRCTY, sy-vline,
  WA_RPUAOBK0L0-PRVAR, sy-vline,
  WA_RPUAOBK0L0-ITPID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RPUAOBK0L0 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_RPUAOBK0L0 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_RPUAOBK0L0 INTO WA_RPUAOBK0L0.


*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_RPUAOBK0L0_STR, 
PERNR TYPE STRING,
SEQNR TYPE STRING,
ABKRS TYPE STRING,
PAYID TYPE STRING,
PAYTY TYPE STRING,
BONDT TYPE STRING,
BEGDA TYPE STRING,
SUBTY TYPE STRING,
PRCTY TYPE STRING,
PRVAR TYPE STRING,
ITPID TYPE STRING,
MARKED TYPE STRING,
PRINT_HOTSPOT TYPE STRING,
CLBK_PROG TYPE STRING,
CLBK_FORM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RPUAOBK0L0_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_RPUAOBK0L0_STR-PERNR sy-vline 
WA_RPUAOBK0L0_STR-SEQNR sy-vline 
WA_RPUAOBK0L0_STR-ABKRS sy-vline 
WA_RPUAOBK0L0_STR-PAYID sy-vline 
WA_RPUAOBK0L0_STR-PAYTY sy-vline 
WA_RPUAOBK0L0_STR-BONDT sy-vline 
WA_RPUAOBK0L0_STR-BEGDA sy-vline 
WA_RPUAOBK0L0_STR-SUBTY sy-vline 
WA_RPUAOBK0L0_STR-PRCTY sy-vline 
WA_RPUAOBK0L0_STR-PRVAR sy-vline 
WA_RPUAOBK0L0_STR-ITPID sy-vline 
WA_RPUAOBK0L0_STR-MARKED sy-vline 
WA_RPUAOBK0L0_STR-PRINT_HOTSPOT sy-vline 
WA_RPUAOBK0L0_STR-CLBK_PROG sy-vline 
WA_RPUAOBK0L0_STR-CLBK_FORM sy-vline      INTO ld_text SEPARATED BY SPACE.

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