ABAP Select data from SAP table /ECRS/RPHD into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /ECRS/RPHD 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 /ECRS/RPHD. 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 /ECRS/RPHD 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_/ECRS/RPHD TYPE STANDARD TABLE OF /ECRS/RPHD,
      WA_/ECRS/RPHD TYPE /ECRS/RPHD,
      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: </ECRS/RPHD> TYPE /ECRS/RPHD.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /ECRS/RPHD
  INTO TABLE IT_/ECRS/RPHD.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /ECRS/RPHD
*  INTO TABLE @DATA(IT_/ECRS/RPHD2).
*--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_/ECRS/RPHD INDEX 1 INTO DATA(WA_/ECRS/RPHD2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/ECRS/RPHD ASSIGNING </ECRS/RPHD>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</ECRS/RPHD>-MANDT = 1.
</ECRS/RPHD>-GUID_RPHD = 1.
</ECRS/RPHD>-POIID = 1.
</ECRS/RPHD>-RPNUM = 1.
</ECRS/RPHD>-RPCTY = 1.

ENDLOOP.

LOOP AT IT_/ECRS/RPHD INTO WA_/ECRS/RPHD.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/ECRS/RPHD-RPLEV, sy-vline,
  WA_/ECRS/RPHD-RPYEA, sy-vline,
  WA_/ECRS/RPHD-RPMON, sy-vline,
  WA_/ECRS/RPHD-DIREC, sy-vline,
  WA_/ECRS/RPHD-RPSTA, sy-vline,
  WA_/ECRS/RPHD-RPCPL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/ECRS/RPHD 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_/ECRS/RPHD 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_/ECRS/RPHD INTO WA_/ECRS/RPHD.


*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 POIID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/ECRS/RPHD-POIID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ECRS/RPHD-POIID.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field KGUOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/ECRS/RPHD-KGUOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ECRS/RPHD-KGUOM.
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_/ECRS/RPHD_STR, 
MANDT TYPE STRING,
GUID_RPHD TYPE STRING,
POIID TYPE STRING,
RPNUM TYPE STRING,
RPCTY TYPE STRING,
RPLEV TYPE STRING,
RPYEA TYPE STRING,
RPMON TYPE STRING,
DIREC TYPE STRING,
RPSTA TYPE STRING,
RPCPL TYPE STRING,
PTNUM TYPE STRING,
RPCUR TYPE STRING,
KGUOM TYPE STRING,
FSTRP TYPE STRING,
FNLRP TYPE STRING,
VRNUM TYPE STRING,
FREVD TYPE STRING,
RCOLC TYPE STRING,
RLSBY TYPE STRING,
RLSTS TYPE STRING,
GFCFL TYPE STRING,
GFCBY TYPE STRING,
GFCTS TYPE STRING,
CRTBY TYPE STRING,
CRTTS TYPE STRING,
LCHBY TYPE STRING,
LCHTS TYPE STRING,
_DATAAGING TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/ECRS/RPHD_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_/ECRS/RPHD_STR-MANDT sy-vline 
WA_/ECRS/RPHD_STR-GUID_RPHD sy-vline 
WA_/ECRS/RPHD_STR-POIID sy-vline 
WA_/ECRS/RPHD_STR-RPNUM sy-vline 
WA_/ECRS/RPHD_STR-RPCTY sy-vline 
WA_/ECRS/RPHD_STR-RPLEV sy-vline 
WA_/ECRS/RPHD_STR-RPYEA sy-vline 
WA_/ECRS/RPHD_STR-RPMON sy-vline 
WA_/ECRS/RPHD_STR-DIREC sy-vline 
WA_/ECRS/RPHD_STR-RPSTA sy-vline 
WA_/ECRS/RPHD_STR-RPCPL sy-vline 
WA_/ECRS/RPHD_STR-PTNUM sy-vline 
WA_/ECRS/RPHD_STR-RPCUR sy-vline 
WA_/ECRS/RPHD_STR-KGUOM sy-vline 
WA_/ECRS/RPHD_STR-FSTRP sy-vline 
WA_/ECRS/RPHD_STR-FNLRP sy-vline 
WA_/ECRS/RPHD_STR-VRNUM sy-vline 
WA_/ECRS/RPHD_STR-FREVD sy-vline 
WA_/ECRS/RPHD_STR-RCOLC sy-vline 
WA_/ECRS/RPHD_STR-RLSBY sy-vline 
WA_/ECRS/RPHD_STR-RLSTS sy-vline 
WA_/ECRS/RPHD_STR-GFCFL sy-vline 
WA_/ECRS/RPHD_STR-GFCBY sy-vline 
WA_/ECRS/RPHD_STR-GFCTS sy-vline 
WA_/ECRS/RPHD_STR-CRTBY sy-vline 
WA_/ECRS/RPHD_STR-CRTTS sy-vline 
WA_/ECRS/RPHD_STR-LCHBY sy-vline 
WA_/ECRS/RPHD_STR-LCHTS sy-vline 
WA_/ECRS/RPHD_STR-_DATAAGING sy-vline      INTO ld_text SEPARATED BY SPACE.

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