ABAP Select data from SAP table RCGGENURG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RCGGENURG
*  INTO TABLE @DATA(IT_RCGGENURG2).
*--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_RCGGENURG INDEX 1 INTO DATA(WA_RCGGENURG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RCGGENURG>-MARKFLG = 1.
<RCGGENURG>-SELEFLG = 1.
<RCGGENURG>-LINENO = 1.
<RCGGENURG>-LINEMOD = 1.
<RCGGENURG>-CHCOFLG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RCGGENURG-LOCKMOD, sy-vline,
  WA_RCGGENURG-INTRFLG, sy-vline,
  WA_RCGGENURG-MANDT, sy-vline,
  WA_RCGGENURG-RECN, sy-vline,
  WA_RCGGENURG-ACTN, sy-vline,
  WA_RCGGENURG-VALFR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RCGGENURG 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_RCGGENURG 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_RCGGENURG INTO WA_RCGGENURG.


*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_RCGGENURG-RECN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCGGENURG-RECN.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit ALPHA, internal->external for field RECNMST
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RCGGENURG-RECNMST
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCGGENURG-RECNMST.
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_RCGGENURG_STR, 
MARKFLG TYPE STRING,
SELEFLG TYPE STRING,
LINENO TYPE STRING,
LINEMOD TYPE STRING,
CHCOFLG TYPE STRING,
LOCKMOD TYPE STRING,
INTRFLG TYPE STRING,
MANDT TYPE STRING,
RECN TYPE STRING,
ACTN 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,
NAMEMST TYPE STRING,
RECNMST TYPE STRING,
VACLID TYPE STRING,
RVLID TYPE STRING,
EXCLFLG TYPE STRING,
ACTVFLG TYPE STRING,
ESNTFLG TYPE STRING,
VACLNAM TYPE STRING,
RVLTYPE TYPE STRING,
RVLNAM TYPE STRING,
MARKTEXT TYPE STRING,
NOAUTHFLG TYPE STRING,
FLGSTATCONFL TYPE STRING,
LAND_STATUS TYPE STRING,
DETAIL_RVLID_STATUS TYPE STRING,
VALFR_STATUS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RCGGENURG_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_RCGGENURG_STR-MARKFLG sy-vline 
WA_RCGGENURG_STR-SELEFLG sy-vline 
WA_RCGGENURG_STR-LINENO sy-vline 
WA_RCGGENURG_STR-LINEMOD sy-vline 
WA_RCGGENURG_STR-CHCOFLG sy-vline 
WA_RCGGENURG_STR-LOCKMOD sy-vline 
WA_RCGGENURG_STR-INTRFLG sy-vline 
WA_RCGGENURG_STR-MANDT sy-vline 
WA_RCGGENURG_STR-RECN sy-vline 
WA_RCGGENURG_STR-ACTN sy-vline 
WA_RCGGENURG_STR-VALFR sy-vline 
WA_RCGGENURG_STR-VALTO sy-vline 
WA_RCGGENURG_STR-AENNR sy-vline 
WA_RCGGENURG_STR-DELFLG sy-vline 
WA_RCGGENURG_STR-PARKFLG sy-vline 
WA_RCGGENURG_STR-CRDAT sy-vline 
WA_RCGGENURG_STR-CRNAM sy-vline 
WA_RCGGENURG_STR-UPDDAT sy-vline 
WA_RCGGENURG_STR-UPDNAM sy-vline 
WA_RCGGENURG_STR-SRSID sy-vline 
WA_RCGGENURG_STR-OWNID sy-vline 
WA_RCGGENURG_STR-RECNROOT sy-vline 
WA_RCGGENURG_STR-NAMEMST sy-vline 
WA_RCGGENURG_STR-RECNMST sy-vline 
WA_RCGGENURG_STR-VACLID sy-vline 
WA_RCGGENURG_STR-RVLID sy-vline 
WA_RCGGENURG_STR-EXCLFLG sy-vline 
WA_RCGGENURG_STR-ACTVFLG sy-vline 
WA_RCGGENURG_STR-ESNTFLG sy-vline 
WA_RCGGENURG_STR-VACLNAM sy-vline 
WA_RCGGENURG_STR-RVLTYPE sy-vline 
WA_RCGGENURG_STR-RVLNAM sy-vline 
WA_RCGGENURG_STR-MARKTEXT sy-vline 
WA_RCGGENURG_STR-NOAUTHFLG sy-vline 
WA_RCGGENURG_STR-FLGSTATCONFL sy-vline 
WA_RCGGENURG_STR-LAND_STATUS sy-vline 
WA_RCGGENURG_STR-DETAIL_RVLID_STATUS sy-vline 
WA_RCGGENURG_STR-VALFR_STATUS sy-vline      INTO ld_text SEPARATED BY SPACE.

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