ABAP Select data from SAP table RCGBVSEL 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 RCGBVSEL 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 RCGBVSEL. 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 RCGBVSEL 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_RCGBVSEL TYPE STANDARD TABLE OF RCGBVSEL,
      WA_RCGBVSEL TYPE RCGBVSEL,
      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: <RCGBVSEL> TYPE RCGBVSEL.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RCGBVSEL
*  INTO TABLE @DATA(IT_RCGBVSEL2).
*--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_RCGBVSEL INDEX 1 INTO DATA(WA_RCGBVSEL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RCGBVSEL>-VACLNAM = 1.
<RCGBVSEL>-RVLNAM = 1.
<RCGBVSEL>-AENNR = 1.
<RCGBVSEL>-VACLID = 1.
<RCGBVSEL>-RVLID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RCGBVSEL-LDEID, sy-vline,
  WA_RCGBVSEL-LANGU, sy-vline,
  WA_RCGBVSEL-LANGU_TEXT, sy-vline,
  WA_RCGBVSEL-VALDAT, sy-vline,
  WA_RCGBVSEL-LDEPID, sy-vline,
  WA_RCGBVSEL-LDEPNAM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RCGBVSEL 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_RCGBVSEL 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_RCGBVSEL INTO WA_RCGBVSEL.


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

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

*Conversion exit CHRID, internal->external for field LDEPID
CALL FUNCTION 'CONVERSION_EXIT_CHRID_OUTPUT'
  EXPORTING
    input =                      WA_RCGBVSEL-LDEPID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCGBVSEL-LDEPID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DOKNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RCGBVSEL-DOKNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCGBVSEL-DOKNR.
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_RCGBVSEL_STR, 
VACLNAM TYPE STRING,
RVLNAM TYPE STRING,
AENNR TYPE STRING,
VACLID TYPE STRING,
RVLID TYPE STRING,
LDEID TYPE STRING,
LANGU TYPE STRING,
LANGU_TEXT TYPE STRING,
VALDAT TYPE STRING,
LDEPID TYPE STRING,
LDEPNAM TYPE STRING,
DOKAR TYPE STRING,
DOKNR TYPE STRING,
DOKVR TYPE STRING,
DOKTL TYPE STRING,
REPTYPE TYPE STRING,
REPTNAM TYPE STRING,
STCCKFLG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RCGBVSEL_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_RCGBVSEL_STR-VACLNAM sy-vline 
WA_RCGBVSEL_STR-RVLNAM sy-vline 
WA_RCGBVSEL_STR-AENNR sy-vline 
WA_RCGBVSEL_STR-VACLID sy-vline 
WA_RCGBVSEL_STR-RVLID sy-vline 
WA_RCGBVSEL_STR-LDEID sy-vline 
WA_RCGBVSEL_STR-LANGU sy-vline 
WA_RCGBVSEL_STR-LANGU_TEXT sy-vline 
WA_RCGBVSEL_STR-VALDAT sy-vline 
WA_RCGBVSEL_STR-LDEPID sy-vline 
WA_RCGBVSEL_STR-LDEPNAM sy-vline 
WA_RCGBVSEL_STR-DOKAR sy-vline 
WA_RCGBVSEL_STR-DOKNR sy-vline 
WA_RCGBVSEL_STR-DOKVR sy-vline 
WA_RCGBVSEL_STR-DOKTL sy-vline 
WA_RCGBVSEL_STR-REPTYPE sy-vline 
WA_RCGBVSEL_STR-REPTNAM sy-vline 
WA_RCGBVSEL_STR-STCCKFLG sy-vline      INTO ld_text SEPARATED BY SPACE.

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