ABAP Select data from SAP table RNBADI_PAI_AT 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_AT 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_AT. 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_AT 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_AT TYPE STANDARD TABLE OF RNBADI_PAI_AT,
      WA_RNBADI_PAI_AT TYPE RNBADI_PAI_AT,
      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_AT> TYPE RNBADI_PAI_AT.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RNBADI_PAI_AT
*  INTO TABLE @DATA(IT_RNBADI_PAI_AT2).
*--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_AT INDEX 1 INTO DATA(WA_RNBADI_PAI_AT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RNBADI_PAI_AT>-NWATARBU = 1.
<RNBADI_PAI_AT>-NWATNOTF = 1.
<RNBADI_PAI_AT>-NWATBEGUT = 1.
<RNBADI_PAI_AT>-NWATMUTT = 1.
<RNBADI_PAI_AT>-NWATSPENDE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RNBADI_PAI_AT-NWATMETHOD, sy-vline,
  WA_RNBADI_PAI_AT-NWATTRUNK, sy-vline,
  WA_RNBADI_PAI_AT-NWATSUCHT, sy-vline,
  WA_RNBADI_PAI_AT-NWATRAUF, sy-vline,
  WA_RNBADI_PAI_AT-NWATRZB, sy-vline,
  WA_RNBADI_PAI_AT-NWATVPNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RNBADI_PAI_AT 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_AT 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_AT INTO WA_RNBADI_PAI_AT.


*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 NWATVPNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNBADI_PAI_AT-NWATVPNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNBADI_PAI_AT-NWATVPNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit ALPHA, internal->external for field NWATAUFART
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNBADI_PAI_AT-NWATAUFART
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNBADI_PAI_AT-NWATAUFART.
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_AT_STR, 
NWATARBU TYPE STRING,
NWATNOTF TYPE STRING,
NWATBEGUT TYPE STRING,
NWATMUTT TYPE STRING,
NWATSPENDE TYPE STRING,
NWATMETHOD TYPE STRING,
NWATTRUNK TYPE STRING,
NWATSUCHT TYPE STRING,
NWATRAUF TYPE STRING,
NWATRZB TYPE STRING,
NWATVPNR TYPE STRING,
NWATBEFRGR TYPE STRING,
NWATSSW TYPE STRING,
NWATBEHAND TYPE STRING,
NWATZUGART TYPE STRING,
NWATABGART TYPE STRING,
NWATZUGVA TYPE STRING,
NWATAUFART TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RNBADI_PAI_AT_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_AT_STR-NWATARBU sy-vline 
WA_RNBADI_PAI_AT_STR-NWATNOTF sy-vline 
WA_RNBADI_PAI_AT_STR-NWATBEGUT sy-vline 
WA_RNBADI_PAI_AT_STR-NWATMUTT sy-vline 
WA_RNBADI_PAI_AT_STR-NWATSPENDE sy-vline 
WA_RNBADI_PAI_AT_STR-NWATMETHOD sy-vline 
WA_RNBADI_PAI_AT_STR-NWATTRUNK sy-vline 
WA_RNBADI_PAI_AT_STR-NWATSUCHT sy-vline 
WA_RNBADI_PAI_AT_STR-NWATRAUF sy-vline 
WA_RNBADI_PAI_AT_STR-NWATRZB sy-vline 
WA_RNBADI_PAI_AT_STR-NWATVPNR sy-vline 
WA_RNBADI_PAI_AT_STR-NWATBEFRGR sy-vline 
WA_RNBADI_PAI_AT_STR-NWATSSW sy-vline 
WA_RNBADI_PAI_AT_STR-NWATBEHAND sy-vline 
WA_RNBADI_PAI_AT_STR-NWATZUGART sy-vline 
WA_RNBADI_PAI_AT_STR-NWATABGART sy-vline 
WA_RNBADI_PAI_AT_STR-NWATZUGVA sy-vline 
WA_RNBADI_PAI_AT_STR-NWATAUFART sy-vline      INTO ld_text SEPARATED BY SPACE.

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