ABAP Select data from SAP table RNTPGP 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 RNTPGP 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 RNTPGP. 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 RNTPGP 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_RNTPGP TYPE STANDARD TABLE OF RNTPGP,
      WA_RNTPGP TYPE RNTPGP,
      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: <RNTPGP> TYPE RNTPGP.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RNTPGP
*  INTO TABLE @DATA(IT_RNTPGP2).
*--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_RNTPGP INDEX 1 INTO DATA(WA_RNTPGP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RNTPGP>-MANDT = 1.
<RNTPGP>-POSNR = 1.
<RNTPGP>-MARK = 1.
<RNTPGP>-TPGID = 1.
<RNTPGP>-POBNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RNTPGP-DISPO, sy-vline,
  WA_RNTPGP-BEGTI, sy-vline,
  WA_RNTPGP-ENDTI, sy-vline,
  WA_RNTPGP-TGPER, sy-vline,
  WA_RNTPGP-MAXNO, sy-vline,
  WA_RNTPGP-DAUER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RNTPGP 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_RNTPGP 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_RNTPGP INTO WA_RNTPGP.


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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field PERNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RNTPGP-PERNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RNTPGP-PERNR.
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_RNTPGP_STR, 
MANDT TYPE STRING,
POSNR TYPE STRING,
MARK TYPE STRING,
TPGID TYPE STRING,
POBNR TYPE STRING,
DISPO TYPE STRING,
BEGTI TYPE STRING,
ENDTI TYPE STRING,
TGPER TYPE STRING,
MAXNO TYPE STRING,
DAUER TYPE STRING,
EINRI TYPE STRING,
ORGID TYPE STRING,
ORGFA TYPE STRING,
FACHR TYPE STRING,
OVBNO TYPE STRING,
EXTBOOK TYPE STRING,
ROOM TYPE STRING,
PERNR TYPE STRING,
PRIOCL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RNTPGP_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_RNTPGP_STR-MANDT sy-vline 
WA_RNTPGP_STR-POSNR sy-vline 
WA_RNTPGP_STR-MARK sy-vline 
WA_RNTPGP_STR-TPGID sy-vline 
WA_RNTPGP_STR-POBNR sy-vline 
WA_RNTPGP_STR-DISPO sy-vline 
WA_RNTPGP_STR-BEGTI sy-vline 
WA_RNTPGP_STR-ENDTI sy-vline 
WA_RNTPGP_STR-TGPER sy-vline 
WA_RNTPGP_STR-MAXNO sy-vline 
WA_RNTPGP_STR-DAUER sy-vline 
WA_RNTPGP_STR-EINRI sy-vline 
WA_RNTPGP_STR-ORGID sy-vline 
WA_RNTPGP_STR-ORGFA sy-vline 
WA_RNTPGP_STR-FACHR sy-vline 
WA_RNTPGP_STR-OVBNO sy-vline 
WA_RNTPGP_STR-EXTBOOK sy-vline 
WA_RNTPGP_STR-ROOM sy-vline 
WA_RNTPGP_STR-PERNR sy-vline 
WA_RNTPGP_STR-PRIOCL sy-vline      INTO ld_text SEPARATED BY SPACE.

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