ABAP Select data from SAP table RGSBM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RGSBM
*  INTO TABLE @DATA(IT_RGSBM2).
*--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_RGSBM INDEX 1 INTO DATA(WA_RGSBM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RGSBM>-FIELDTEXT = 1.
<RGSBM>-FIELDCLAS = 1.
<RGSBM>-TABLETEXT = 1.
<RGSBM>-CRUSER = 1.
<RGSBM>-UPDUSER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RGSBM-CRDATE, sy-vline,
  WA_RGSBM-UPDDATE, sy-vline,
  WA_RGSBM-CRTIME, sy-vline,
  WA_RGSBM-UPDTIME, sy-vline,
  WA_RGSBM-ENTRYACT, sy-vline,
  WA_RGSBM-ENTRYMAX, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RGSBM 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_RGSBM 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_RGSBM INTO WA_RGSBM.


*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 DTYPE, internal->external for field DATATYPE
CALL FUNCTION 'CONVERSION_EXIT_DTYPE_OUTPUT'
  EXPORTING
    input =                      WA_RGSBM-DATATYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RGSBM-DATATYPE.
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_RGSBM_STR, 
FIELDTEXT TYPE STRING,
FIELDCLAS TYPE STRING,
TABLETEXT TYPE STRING,
CRUSER TYPE STRING,
UPDUSER TYPE STRING,
CRDATE TYPE STRING,
UPDDATE TYPE STRING,
CRTIME TYPE STRING,
UPDTIME TYPE STRING,
ENTRYACT TYPE STRING,
ENTRYMAX TYPE STRING,
SETTYPEB TYPE STRING,
SETTYPES TYPE STRING,
SETTYPED TYPE STRING,
SETTYPEM TYPE STRING,
TYPETEXT TYPE STRING,
UTAB TYPE STRING,
LENGTH TYPE STRING,
DATATYPE TYPE STRING,
CONVEXIT TYPE STRING,
SHORTNREF TYPE STRING,
SETIDREF TYPE STRING,
UNIQUE_P TYPE STRING,
UNIQUE_S TYPE STRING,
UNIQUE_N TYPE STRING,
FORMLINE1 TYPE STRING,
FORMLINE2 TYPE STRING,
FORMLINE3 TYPE STRING,
FLINE TYPE STRING,
VARNAME TYPE STRING,
VARFIELD TYPE STRING,
OUTPUTLEN TYPE STRING,
ROLLNAME TYPE STRING,
SETCLST TYPE STRING,
SETCLASS TYPE STRING,
SHORTNAME TYPE STRING,
KOKRS TYPE STRING,
KTOPL TYPE STRING,
LIB TYPE STRING,
RNAME TYPE STRING,
ECCS_DIMEN TYPE STRING,
ECCS_ITCLG TYPE STRING,
ECCS_SITYP TYPE STRING,
FIKRS TYPE STRING,
SUBCLASS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RGSBM_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_RGSBM_STR-FIELDTEXT sy-vline 
WA_RGSBM_STR-FIELDCLAS sy-vline 
WA_RGSBM_STR-TABLETEXT sy-vline 
WA_RGSBM_STR-CRUSER sy-vline 
WA_RGSBM_STR-UPDUSER sy-vline 
WA_RGSBM_STR-CRDATE sy-vline 
WA_RGSBM_STR-UPDDATE sy-vline 
WA_RGSBM_STR-CRTIME sy-vline 
WA_RGSBM_STR-UPDTIME sy-vline 
WA_RGSBM_STR-ENTRYACT sy-vline 
WA_RGSBM_STR-ENTRYMAX sy-vline 
WA_RGSBM_STR-SETTYPEB sy-vline 
WA_RGSBM_STR-SETTYPES sy-vline 
WA_RGSBM_STR-SETTYPED sy-vline 
WA_RGSBM_STR-SETTYPEM sy-vline 
WA_RGSBM_STR-TYPETEXT sy-vline 
WA_RGSBM_STR-UTAB sy-vline 
WA_RGSBM_STR-LENGTH sy-vline 
WA_RGSBM_STR-DATATYPE sy-vline 
WA_RGSBM_STR-CONVEXIT sy-vline 
WA_RGSBM_STR-SHORTNREF sy-vline 
WA_RGSBM_STR-SETIDREF sy-vline 
WA_RGSBM_STR-UNIQUE_P sy-vline 
WA_RGSBM_STR-UNIQUE_S sy-vline 
WA_RGSBM_STR-UNIQUE_N sy-vline 
WA_RGSBM_STR-FORMLINE1 sy-vline 
WA_RGSBM_STR-FORMLINE2 sy-vline 
WA_RGSBM_STR-FORMLINE3 sy-vline 
WA_RGSBM_STR-FLINE sy-vline 
WA_RGSBM_STR-VARNAME sy-vline 
WA_RGSBM_STR-VARFIELD sy-vline 
WA_RGSBM_STR-OUTPUTLEN sy-vline 
WA_RGSBM_STR-ROLLNAME sy-vline 
WA_RGSBM_STR-SETCLST sy-vline 
WA_RGSBM_STR-SETCLASS sy-vline 
WA_RGSBM_STR-SHORTNAME sy-vline 
WA_RGSBM_STR-KOKRS sy-vline 
WA_RGSBM_STR-KTOPL sy-vline 
WA_RGSBM_STR-LIB sy-vline 
WA_RGSBM_STR-RNAME sy-vline 
WA_RGSBM_STR-ECCS_DIMEN sy-vline 
WA_RGSBM_STR-ECCS_ITCLG sy-vline 
WA_RGSBM_STR-ECCS_SITYP sy-vline 
WA_RGSBM_STR-FIKRS sy-vline 
WA_RGSBM_STR-SUBCLASS sy-vline      INTO ld_text SEPARATED BY SPACE.

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