ABAP Select data from SAP table RNDPNT_POTH into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RNDPNT_POTH
*  INTO TABLE @DATA(IT_RNDPNT_POTH2).
*--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_RNDPNT_POTH INDEX 1 INTO DATA(WA_RNDPNT_POTH2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RNDPNT_POTH>-PNT_LANGU = 1.
<RNDPNT_POTH>-PNT_LANGU_TXT = 1.
<RNDPNT_POTH>-BIRTHCTRY = 1.
<RNDPNT_POTH>-BIRTHCTRY_TXT = 1.
<RNDPNT_POTH>-BIRTHPL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RNDPNT_POTH-MARST, sy-vline,
  WA_RNDPNT_POTH-MARST_LANGU, sy-vline,
  WA_RNDPNT_POTH-MARST_TXT, sy-vline,
  WA_RNDPNT_POTH-RELGN, sy-vline,
  WA_RNDPNT_POTH-RELGN_STXT, sy-vline,
  WA_RNDPNT_POTH-RELGN_LTXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RNDPNT_POTH 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_RNDPNT_POTH 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_RNDPNT_POTH INTO WA_RNDPNT_POTH.


*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 PNT_LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_RNDPNT_POTH-PNT_LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNDPNT_POTH-PNT_LANGU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field MARST_LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_RNDPNT_POTH-MARST_LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNDPNT_POTH-MARST_LANGU.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit NLJUS, internal->external for field DOC_NUM
CALL FUNCTION 'CONVERSION_EXIT_NLJUS_OUTPUT'
  EXPORTING
    input =                      WA_RNDPNT_POTH-DOC_NUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNDPNT_POTH-DOC_NUM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RACE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNDPNT_POTH-RACE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNDPNT_POTH-RACE.
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_RNDPNT_POTH_STR, 
PNT_LANGU TYPE STRING,
PNT_LANGU_TXT TYPE STRING,
BIRTHCTRY TYPE STRING,
BIRTHCTRY_TXT TYPE STRING,
BIRTHPL TYPE STRING,
MARST TYPE STRING,
MARST_LANGU TYPE STRING,
MARST_TXT TYPE STRING,
RELGN TYPE STRING,
RELGN_STXT TYPE STRING,
RELGN_LTXT TYPE STRING,
REMPNT_TXT TYPE STRING,
REM_MORE_TEXT TYPE STRING,
PNT_EXTNR TYPE STRING,
SI_NUM TYPE STRING,
DOC_TYP TYPE STRING,
DOC_TXT TYPE STRING,
DOC_NUM TYPE STRING,
PARISH TYPE STRING,
PARISH_TXT TYPE STRING,
RACE TYPE STRING,
RACE_TXT TYPE STRING,
INSID TYPE STRING,
ISTAT_BPL TYPE STRING,
ISTAT_BPLTXT TYPE STRING,
TAXNUM TYPE STRING,
TAXNUM_IND TYPE STRING,
STP TYPE STRING,
STP_ENDDT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RNDPNT_POTH_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_RNDPNT_POTH_STR-PNT_LANGU sy-vline 
WA_RNDPNT_POTH_STR-PNT_LANGU_TXT sy-vline 
WA_RNDPNT_POTH_STR-BIRTHCTRY sy-vline 
WA_RNDPNT_POTH_STR-BIRTHCTRY_TXT sy-vline 
WA_RNDPNT_POTH_STR-BIRTHPL sy-vline 
WA_RNDPNT_POTH_STR-MARST sy-vline 
WA_RNDPNT_POTH_STR-MARST_LANGU sy-vline 
WA_RNDPNT_POTH_STR-MARST_TXT sy-vline 
WA_RNDPNT_POTH_STR-RELGN sy-vline 
WA_RNDPNT_POTH_STR-RELGN_STXT sy-vline 
WA_RNDPNT_POTH_STR-RELGN_LTXT sy-vline 
WA_RNDPNT_POTH_STR-REMPNT_TXT sy-vline 
WA_RNDPNT_POTH_STR-REM_MORE_TEXT sy-vline 
WA_RNDPNT_POTH_STR-PNT_EXTNR sy-vline 
WA_RNDPNT_POTH_STR-SI_NUM sy-vline 
WA_RNDPNT_POTH_STR-DOC_TYP sy-vline 
WA_RNDPNT_POTH_STR-DOC_TXT sy-vline 
WA_RNDPNT_POTH_STR-DOC_NUM sy-vline 
WA_RNDPNT_POTH_STR-PARISH sy-vline 
WA_RNDPNT_POTH_STR-PARISH_TXT sy-vline 
WA_RNDPNT_POTH_STR-RACE sy-vline 
WA_RNDPNT_POTH_STR-RACE_TXT sy-vline 
WA_RNDPNT_POTH_STR-INSID sy-vline 
WA_RNDPNT_POTH_STR-ISTAT_BPL sy-vline 
WA_RNDPNT_POTH_STR-ISTAT_BPLTXT sy-vline 
WA_RNDPNT_POTH_STR-TAXNUM sy-vline 
WA_RNDPNT_POTH_STR-TAXNUM_IND sy-vline 
WA_RNDPNT_POTH_STR-STP sy-vline 
WA_RNDPNT_POTH_STR-STP_ENDDT sy-vline      INTO ld_text SEPARATED BY SPACE.

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