ABAP Select data from SAP table RNBADI_PAI_DOC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RNBADI_PAI_DOC
*  INTO TABLE @DATA(IT_RNBADI_PAI_DOC2).
*--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_RNBADI_PAI_DOC INDEX 1 INTO DATA(WA_RNBADI_PAI_DOC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RNBADI_PAI_DOC>-PERNR = 1.
<RNBADI_PAI_DOC>-LFDNR = 1.
<RNBADI_PAI_DOC>-LFDBW = 1.
<RNBADI_PAI_DOC>-FARZT = 1.
<RNBADI_PAI_DOC>-BEGDT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RNBADI_PAI_DOC-ENDDT, sy-vline,
  WA_RNBADI_PAI_DOC-TEXT_FPZ, sy-vline,
  WA_RNBADI_PAI_DOC-STORN, sy-vline,
  WA_RNBADI_PAI_DOC-STUSR, sy-vline,
  WA_RNBADI_PAI_DOC-STDAT, sy-vline,
  WA_RNBADI_PAI_DOC-ERDAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RNBADI_PAI_DOC 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_RNBADI_PAI_DOC 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_RNBADI_PAI_DOC INTO WA_RNBADI_PAI_DOC.


*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 PERNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNBADI_PAI_DOC-PERNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNBADI_PAI_DOC-PERNR.
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_RNBADI_PAI_DOC_STR, 
PERNR TYPE STRING,
LFDNR TYPE STRING,
LFDBW TYPE STRING,
FARZT TYPE STRING,
BEGDT TYPE STRING,
ENDDT TYPE STRING,
TEXT_FPZ TYPE STRING,
STORN TYPE STRING,
STUSR TYPE STRING,
STDAT TYPE STRING,
ERDAT TYPE STRING,
ERUSR TYPE STRING,
UPDAT TYPE STRING,
UPUSR TYPE STRING,
EARZT TYPE STRING,
LANR TYPE STRING,
BSNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RNBADI_PAI_DOC_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_RNBADI_PAI_DOC_STR-PERNR sy-vline 
WA_RNBADI_PAI_DOC_STR-LFDNR sy-vline 
WA_RNBADI_PAI_DOC_STR-LFDBW sy-vline 
WA_RNBADI_PAI_DOC_STR-FARZT sy-vline 
WA_RNBADI_PAI_DOC_STR-BEGDT sy-vline 
WA_RNBADI_PAI_DOC_STR-ENDDT sy-vline 
WA_RNBADI_PAI_DOC_STR-TEXT_FPZ sy-vline 
WA_RNBADI_PAI_DOC_STR-STORN sy-vline 
WA_RNBADI_PAI_DOC_STR-STUSR sy-vline 
WA_RNBADI_PAI_DOC_STR-STDAT sy-vline 
WA_RNBADI_PAI_DOC_STR-ERDAT sy-vline 
WA_RNBADI_PAI_DOC_STR-ERUSR sy-vline 
WA_RNBADI_PAI_DOC_STR-UPDAT sy-vline 
WA_RNBADI_PAI_DOC_STR-UPUSR sy-vline 
WA_RNBADI_PAI_DOC_STR-EARZT sy-vline 
WA_RNBADI_PAI_DOC_STR-LANR sy-vline 
WA_RNBADI_PAI_DOC_STR-BSNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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