ABAP Select data from SAP table RGCU9 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RGCU9 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 RGCU9. 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 RGCU9 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_RGCU9 TYPE STANDARD TABLE OF RGCU9,
      WA_RGCU9 TYPE RGCU9,
      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: <RGCU9> TYPE RGCU9.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RGCU9.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RGCU9
  INTO TABLE IT_RGCU9.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RGCU9
*  INTO TABLE @DATA(IT_RGCU92).
*--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_RGCU9 INDEX 1 INTO DATA(WA_RGCU92).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RGCU9 ASSIGNING <RGCU9>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RGCU9>-POSTING = 1.
<RGCU9>-MASTERD = 1.
<RGCU9>-ALLOCATION = 1.
<RGCU9>-REPORTW = 1.
<RGCU9>-GENERATE = 1.

ENDLOOP.

LOOP AT IT_RGCU9 INTO WA_RGCU9.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RGCU9-TABLE1, sy-vline,
  WA_RGCU9-TABLE2, sy-vline,
  WA_RGCU9-TABLE3, sy-vline,
  WA_RGCU9-TABLE4, sy-vline,
  WA_RGCU9-SITABLE1, sy-vline,
  WA_RGCU9-SITABLE2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RGCU9 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_RGCU9 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_RGCU9 INTO WA_RGCU9.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_RGCU9_STR, 
POSTING TYPE STRING,
MASTERD TYPE STRING,
ALLOCATION TYPE STRING,
REPORTW TYPE STRING,
GENERATE TYPE STRING,
TABLE1 TYPE STRING,
TABLE2 TYPE STRING,
TABLE3 TYPE STRING,
TABLE4 TYPE STRING,
SITABLE1 TYPE STRING,
SITABLE2 TYPE STRING,
SITABLE3 TYPE STRING,
SITABLE4 TYPE STRING,
PLSITABLE1 TYPE STRING,
PLSITABLE2 TYPE STRING,
PLSITABLE3 TYPE STRING,
PLSITABLE4 TYPE STRING,
GLU1 TYPE STRING,
DEGENERATE TYPE STRING,
VORTAB1 TYPE STRING,
ZIELTAB1 TYPE STRING,
ALLCLIENTS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RGCU9_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_RGCU9_STR-POSTING sy-vline 
WA_RGCU9_STR-MASTERD sy-vline 
WA_RGCU9_STR-ALLOCATION sy-vline 
WA_RGCU9_STR-REPORTW sy-vline 
WA_RGCU9_STR-GENERATE sy-vline 
WA_RGCU9_STR-TABLE1 sy-vline 
WA_RGCU9_STR-TABLE2 sy-vline 
WA_RGCU9_STR-TABLE3 sy-vline 
WA_RGCU9_STR-TABLE4 sy-vline 
WA_RGCU9_STR-SITABLE1 sy-vline 
WA_RGCU9_STR-SITABLE2 sy-vline 
WA_RGCU9_STR-SITABLE3 sy-vline 
WA_RGCU9_STR-SITABLE4 sy-vline 
WA_RGCU9_STR-PLSITABLE1 sy-vline 
WA_RGCU9_STR-PLSITABLE2 sy-vline 
WA_RGCU9_STR-PLSITABLE3 sy-vline 
WA_RGCU9_STR-PLSITABLE4 sy-vline 
WA_RGCU9_STR-GLU1 sy-vline 
WA_RGCU9_STR-DEGENERATE sy-vline 
WA_RGCU9_STR-VORTAB1 sy-vline 
WA_RGCU9_STR-ZIELTAB1 sy-vline 
WA_RGCU9_STR-ALLCLIENTS sy-vline      INTO ld_text SEPARATED BY SPACE.

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