ABAP Select data from SAP table RNDNPNTCAS_INPUT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RNDNPNTCAS_INPUT
*  INTO TABLE @DATA(IT_RNDNPNTCAS_INPUT2).
*--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_RNDNPNTCAS_INPUT INDEX 1 INTO DATA(WA_RNDNPNTCAS_INPUT2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RNDNPNTCAS_INPUT-SPRSL, sy-vline,
  WA_RNDNPNTCAS_INPUT-FAMST, sy-vline,
  WA_RNDNPNTCAS_INPUT-FATXT, sy-vline,
  WA_RNDNPNTCAS_INPUT-ISTATBPL, sy-vline,
  WA_RNDNPNTCAS_INPUT-PFORT, sy-vline,
  WA_RNDNPNTCAS_INPUT-HEALTHID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RNDNPNTCAS_INPUT 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_RNDNPNTCAS_INPUT 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_RNDNPNTCAS_INPUT INTO WA_RNDNPNTCAS_INPUT.


*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 ISOLA, internal->external for field SPRSL
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_RNDNPNTCAS_INPUT-SPRSL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNDNPNTCAS_INPUT-SPRSL.
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_RNDNPNTCAS_INPUT_STR, 
NNAME TYPE STRING,
VNAME TYPE STRING,
GBDAT TYPE STRING,
GSCHL TYPE STRING,
NATIO TYPE STRING,
SPRSL TYPE STRING,
FAMST TYPE STRING,
FATXT 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_RNDNPNTCAS_INPUT_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_RNDNPNTCAS_INPUT_STR-NNAME sy-vline 
WA_RNDNPNTCAS_INPUT_STR-VNAME sy-vline 
WA_RNDNPNTCAS_INPUT_STR-GBDAT sy-vline 
WA_RNDNPNTCAS_INPUT_STR-GSCHL sy-vline 
WA_RNDNPNTCAS_INPUT_STR-NATIO sy-vline 
WA_RNDNPNTCAS_INPUT_STR-SPRSL sy-vline 
WA_RNDNPNTCAS_INPUT_STR-FAMST sy-vline 
WA_RNDNPNTCAS_INPUT_STR-FATXT sy-vline 
WA_RNDNPNTCAS_INPUT_STR-ISTATBPL sy-vline 
WA_RNDNPNTCAS_INPUT_STR-PFORT sy-vline 
WA_RNDNPNTCAS_INPUT_STR-HEALTHID sy-vline 
WA_RNDNPNTCAS_INPUT_STR-ITREG sy-vline 
WA_RNDNPNTCAS_INPUT_STR-LAND sy-vline 
WA_RNDNPNTCAS_INPUT_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.