ABAP Select data from SAP table RDGMDPSUSD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RDGMDPSUSD
*  INTO TABLE @DATA(IT_RDGMDPSUSD2).
*--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_RDGMDPSUSD INDEX 1 INTO DATA(WA_RDGMDPSUSD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RDGMDPSUSD>-RECN = 1.
<RDGMDPSUSD>-PHRKEY = 1.
<RDGMDPSUSD>-RECN_USER = 1.
<RDGMDPSUSD>-ACTN_USER = 1.
<RDGMDPSUSD>-VALFR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RDGMDPSUSD-VALTO, sy-vline,
  WA_RDGMDPSUSD-AENNR, sy-vline,
  WA_RDGMDPSUSD-DELFLG, sy-vline,
  WA_RDGMDPSUSD-PARKFLG, sy-vline,
  WA_RDGMDPSUSD-CRDAT, sy-vline,
  WA_RDGMDPSUSD-CRNAM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RDGMDPSUSD 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_RDGMDPSUSD 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_RDGMDPSUSD INTO WA_RDGMDPSUSD.


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

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

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

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

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

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

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

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_RDGMDPSUSD-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RDGMDPSUSD-MATNR.
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_RDGMDPSUSD_STR, 
RECN TYPE STRING,
PHRKEY TYPE STRING,
RECN_USER TYPE STRING,
ACTN_USER TYPE STRING,
VALFR TYPE STRING,
VALTO TYPE STRING,
AENNR TYPE STRING,
DELFLG TYPE STRING,
PARKFLG TYPE STRING,
CRDAT TYPE STRING,
CRNAM TYPE STRING,
UPDDAT TYPE STRING,
UPDNAM TYPE STRING,
SRSID TYPE STRING,
OWNID TYPE STRING,
RECNROOT TYPE STRING,
ERRORMODE TYPE STRING,
ERRORINFO TYPE STRING,
ERRORCLASS TYPE STRING,
ERRORPARAM TYPE STRING,
LOGLOCKMOD TYPE STRING,
EXTINFO TYPE STRING,
LINEMOD TYPE STRING,
VBELN TYPE STRING,
POSNR TYPE STRING,
LFDNR TYPE STRING,
MATNR TYPE STRING,
LWDG TYPE STRING,
FIELDNAME TYPE STRING,
FIELDTEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RDGMDPSUSD_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_RDGMDPSUSD_STR-RECN sy-vline 
WA_RDGMDPSUSD_STR-PHRKEY sy-vline 
WA_RDGMDPSUSD_STR-RECN_USER sy-vline 
WA_RDGMDPSUSD_STR-ACTN_USER sy-vline 
WA_RDGMDPSUSD_STR-VALFR sy-vline 
WA_RDGMDPSUSD_STR-VALTO sy-vline 
WA_RDGMDPSUSD_STR-AENNR sy-vline 
WA_RDGMDPSUSD_STR-DELFLG sy-vline 
WA_RDGMDPSUSD_STR-PARKFLG sy-vline 
WA_RDGMDPSUSD_STR-CRDAT sy-vline 
WA_RDGMDPSUSD_STR-CRNAM sy-vline 
WA_RDGMDPSUSD_STR-UPDDAT sy-vline 
WA_RDGMDPSUSD_STR-UPDNAM sy-vline 
WA_RDGMDPSUSD_STR-SRSID sy-vline 
WA_RDGMDPSUSD_STR-OWNID sy-vline 
WA_RDGMDPSUSD_STR-RECNROOT sy-vline 
WA_RDGMDPSUSD_STR-ERRORMODE sy-vline 
WA_RDGMDPSUSD_STR-ERRORINFO sy-vline 
WA_RDGMDPSUSD_STR-ERRORCLASS sy-vline 
WA_RDGMDPSUSD_STR-ERRORPARAM sy-vline 
WA_RDGMDPSUSD_STR-LOGLOCKMOD sy-vline 
WA_RDGMDPSUSD_STR-EXTINFO sy-vline 
WA_RDGMDPSUSD_STR-LINEMOD sy-vline 
WA_RDGMDPSUSD_STR-VBELN sy-vline 
WA_RDGMDPSUSD_STR-POSNR sy-vline 
WA_RDGMDPSUSD_STR-LFDNR sy-vline 
WA_RDGMDPSUSD_STR-MATNR sy-vline 
WA_RDGMDPSUSD_STR-LWDG sy-vline 
WA_RDGMDPSUSD_STR-FIELDNAME sy-vline 
WA_RDGMDPSUSD_STR-FIELDTEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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