ABAP Select data from SAP table RDGTXTPRT 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 RDGTXTPRT 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 RDGTXTPRT. 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 RDGTXTPRT 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_RDGTXTPRT TYPE STANDARD TABLE OF RDGTXTPRT,
      WA_RDGTXTPRT TYPE RDGTXTPRT,
      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: <RDGTXTPRT> TYPE RDGTXTPRT.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RDGTXTPRT
*  INTO TABLE @DATA(IT_RDGTXTPRT2).
*--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_RDGTXTPRT INDEX 1 INTO DATA(WA_RDGTXTPRT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RDGTXTPRT>-MATNR = 1.
<RDGTXTPRT>-TDOBJECT = 1.
<RDGTXTPRT>-TDNAME = 1.
<RDGTXTPRT>-TDID = 1.
<RDGTXTPRT>-RVLID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RDGTXTPRT-MOT, sy-vline,
  WA_RDGTXTPRT-TDSPRAS, sy-vline,
  WA_RDGTXTPRT-PHRSEL, sy-vline,
  WA_RDGTXTPRT-IDENTIFIER, sy-vline,
  WA_RDGTXTPRT-LANGU, sy-vline,
  WA_RDGTXTPRT-LWDG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RDGTXTPRT 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_RDGTXTPRT 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_RDGTXTPRT INTO WA_RDGTXTPRT.


*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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_RDGTXTPRT-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RDGTXTPRT-MATNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CHRI3, internal->external for field PHRSEL
CALL FUNCTION 'CONVERSION_EXIT_CHRI3_OUTPUT'
  EXPORTING
    input =                      WA_RDGTXTPRT-PHRSEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RDGTXTPRT-PHRSEL.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field VENUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RDGTXTPRT-VENUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RDGTXTPRT-VENUM.
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_RDGTXTPRT_STR, 
MATNR TYPE STRING,
TDOBJECT TYPE STRING,
TDNAME TYPE STRING,
TDID TYPE STRING,
RVLID TYPE STRING,
MOT TYPE STRING,
TDSPRAS TYPE STRING,
PHRSEL TYPE STRING,
IDENTIFIER TYPE STRING,
LANGU TYPE STRING,
LWDG TYPE STRING,
POSNR TYPE STRING,
VBELN TYPE STRING,
VENUM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RDGTXTPRT_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_RDGTXTPRT_STR-MATNR sy-vline 
WA_RDGTXTPRT_STR-TDOBJECT sy-vline 
WA_RDGTXTPRT_STR-TDNAME sy-vline 
WA_RDGTXTPRT_STR-TDID sy-vline 
WA_RDGTXTPRT_STR-RVLID sy-vline 
WA_RDGTXTPRT_STR-MOT sy-vline 
WA_RDGTXTPRT_STR-TDSPRAS sy-vline 
WA_RDGTXTPRT_STR-PHRSEL sy-vline 
WA_RDGTXTPRT_STR-IDENTIFIER sy-vline 
WA_RDGTXTPRT_STR-LANGU sy-vline 
WA_RDGTXTPRT_STR-LWDG sy-vline 
WA_RDGTXTPRT_STR-POSNR sy-vline 
WA_RDGTXTPRT_STR-VBELN sy-vline 
WA_RDGTXTPRT_STR-VENUM sy-vline      INTO ld_text SEPARATED BY SPACE.

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