ABAP Select data from SAP table RNDNPNTCAS into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RNDNPNTCAS 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. 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 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 TYPE STANDARD TABLE OF RNDNPNTCAS,
      WA_RNDNPNTCAS TYPE RNDNPNTCAS,
      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> TYPE RNDNPNTCAS.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RNDNPNTCAS
*  INTO TABLE @DATA(IT_RNDNPNTCAS2).
*--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 INDEX 1 INTO DATA(WA_RNDNPNTCAS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RNDNPNTCAS>-MANDT = 1.
<RNDNPNTCAS>-EINRI = 1.
<RNDNPNTCAS>-PATNR = 1.
<RNDNPNTCAS>-FALNR = 1.
<RNDNPNTCAS>-NNAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RNDNPNTCAS-VNAME, sy-vline,
  WA_RNDNPNTCAS-GBDAT, sy-vline,
  WA_RNDNPNTCAS-GSCHL, sy-vline,
  WA_RNDNPNTCAS-NATIO, sy-vline,
  WA_RNDNPNTCAS-SPRSL, sy-vline,
  WA_RNDNPNTCAS-FAMST, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RNDNPNTCAS 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 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 INTO WA_RNDNPNTCAS.


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

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

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

*Conversion exit ISOLA, internal->external for field SPRSL
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_RNDNPNTCAS-SPRSL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNDNPNTCAS-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_STR, 
MANDT TYPE STRING,
EINRI TYPE STRING,
PATNR TYPE STRING,
FALNR TYPE STRING,
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,
GSCHLTXT TYPE STRING,
NATXT TYPE STRING,
ISTATBPLTXT TYPE STRING,
ITREGTXT TYPE STRING,
LANDTXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RNDNPNTCAS_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_STR-MANDT sy-vline 
WA_RNDNPNTCAS_STR-EINRI sy-vline 
WA_RNDNPNTCAS_STR-PATNR sy-vline 
WA_RNDNPNTCAS_STR-FALNR sy-vline 
WA_RNDNPNTCAS_STR-NNAME sy-vline 
WA_RNDNPNTCAS_STR-VNAME sy-vline 
WA_RNDNPNTCAS_STR-GBDAT sy-vline 
WA_RNDNPNTCAS_STR-GSCHL sy-vline 
WA_RNDNPNTCAS_STR-NATIO sy-vline 
WA_RNDNPNTCAS_STR-SPRSL sy-vline 
WA_RNDNPNTCAS_STR-FAMST sy-vline 
WA_RNDNPNTCAS_STR-FATXT sy-vline 
WA_RNDNPNTCAS_STR-ISTATBPL sy-vline 
WA_RNDNPNTCAS_STR-PFORT sy-vline 
WA_RNDNPNTCAS_STR-HEALTHID sy-vline 
WA_RNDNPNTCAS_STR-ITREG sy-vline 
WA_RNDNPNTCAS_STR-LAND sy-vline 
WA_RNDNPNTCAS_STR-STRAS sy-vline 
WA_RNDNPNTCAS_STR-GSCHLTXT sy-vline 
WA_RNDNPNTCAS_STR-NATXT sy-vline 
WA_RNDNPNTCAS_STR-ISTATBPLTXT sy-vline 
WA_RNDNPNTCAS_STR-ITREGTXT sy-vline 
WA_RNDNPNTCAS_STR-LANDTXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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