ABAP Select data from SAP table RNBADI_NPNTCAS into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RNBADI_NPNTCAS 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_NPNTCAS. 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_NPNTCAS 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_NPNTCAS TYPE STANDARD TABLE OF RNBADI_NPNTCAS,
      WA_RNBADI_NPNTCAS TYPE RNBADI_NPNTCAS,
      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_NPNTCAS> TYPE RNBADI_NPNTCAS.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RNBADI_NPNTCAS
*  INTO TABLE @DATA(IT_RNBADI_NPNTCAS2).
*--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_NPNTCAS INDEX 1 INTO DATA(WA_RNBADI_NPNTCAS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RNBADI_NPNTCAS>-NNAME = 1.
<RNBADI_NPNTCAS>-VNAME = 1.
<RNBADI_NPNTCAS>-GBDAT = 1.
<RNBADI_NPNTCAS>-GSCHL = 1.
<RNBADI_NPNTCAS>-NATIO = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RNBADI_NPNTCAS-FAMST, sy-vline,
  WA_RNBADI_NPNTCAS-ISTATBPL, sy-vline,
  WA_RNBADI_NPNTCAS-PFORT, sy-vline,
  WA_RNBADI_NPNTCAS-HEALTHID, sy-vline,
  WA_RNBADI_NPNTCAS-ITREG, sy-vline,
  WA_RNBADI_NPNTCAS-LAND, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RNBADI_NPNTCAS 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_NPNTCAS 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_NPNTCAS INTO WA_RNBADI_NPNTCAS.


*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_RNBADI_NPNTCAS_STR, 
NNAME TYPE STRING,
VNAME TYPE STRING,
GBDAT TYPE STRING,
GSCHL TYPE STRING,
NATIO TYPE STRING,
FAMST TYPE STRING,
ISTATBPL TYPE STRING,
PFORT TYPE STRING,
HEALTHID TYPE STRING,
ITREG TYPE STRING,
LAND TYPE STRING,
STRAS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RNBADI_NPNTCAS_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_NPNTCAS_STR-NNAME sy-vline 
WA_RNBADI_NPNTCAS_STR-VNAME sy-vline 
WA_RNBADI_NPNTCAS_STR-GBDAT sy-vline 
WA_RNBADI_NPNTCAS_STR-GSCHL sy-vline 
WA_RNBADI_NPNTCAS_STR-NATIO sy-vline 
WA_RNBADI_NPNTCAS_STR-FAMST sy-vline 
WA_RNBADI_NPNTCAS_STR-ISTATBPL sy-vline 
WA_RNBADI_NPNTCAS_STR-PFORT sy-vline 
WA_RNBADI_NPNTCAS_STR-HEALTHID sy-vline 
WA_RNBADI_NPNTCAS_STR-ITREG sy-vline 
WA_RNBADI_NPNTCAS_STR-LAND sy-vline 
WA_RNBADI_NPNTCAS_STR-STRAS sy-vline      INTO ld_text SEPARATED BY SPACE.

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