ABAP Select data from SAP table RELR_GBGENERAL into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RELR_GBGENERAL
*  INTO TABLE @DATA(IT_RELR_GBGENERAL2).
*--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_RELR_GBGENERAL INDEX 1 INTO DATA(WA_RELR_GBGENERAL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RELR_GBGENERAL>-SGRBART = 1.
<RELR_GBGENERAL>-SBVNR = 1.
<RELR_GBGENERAL>-SLFDBV = 1.
<RELR_GBGENERAL>-DATE_ROETUNG = 1.
<RELR_GBGENERAL>-ALT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RELR_GBGENERAL-FLUR, sy-vline,
  WA_RELR_GBGENERAL-LSBNR, sy-vline,
  WA_RELR_GBGENERAL-XLAGE, sy-vline,
  WA_RELR_GBGENERAL-FLAECHE, sy-vline,
  WA_RELR_GBGENERAL-EINHEIT, sy-vline,
  WA_RELR_GBGENERAL-ROETUNG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RELR_GBGENERAL 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_RELR_GBGENERAL 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_RELR_GBGENERAL INTO WA_RELR_GBGENERAL.


*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 CUNIT, internal->external for field EINHEIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RELR_GBGENERAL-EINHEIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RELR_GBGENERAL-EINHEIT.
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_RELR_GBGENERAL_STR, 
SGRBART TYPE STRING,
SBVNR TYPE STRING,
SLFDBV TYPE STRING,
DATE_ROETUNG TYPE STRING,
ALT TYPE STRING,
FLUR TYPE STRING,
LSBNR TYPE STRING,
XLAGE TYPE STRING,
FLAECHE TYPE STRING,
EINHEIT TYPE STRING,
ROETUNG TYPE STRING,
INTRENO TYPE STRING,
WIRTART TYPE STRING,
SLFDFL TYPE STRING,
HERRSCHART TYPE STRING,
MITEIG TYPE STRING,
ZU TYPE STRING,
FLUR_ERB TYPE STRING,
EIG_NAME_ERB TYPE STRING,
SGRBA TYPE STRING,
XGBAMT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RELR_GBGENERAL_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_RELR_GBGENERAL_STR-SGRBART sy-vline 
WA_RELR_GBGENERAL_STR-SBVNR sy-vline 
WA_RELR_GBGENERAL_STR-SLFDBV sy-vline 
WA_RELR_GBGENERAL_STR-DATE_ROETUNG sy-vline 
WA_RELR_GBGENERAL_STR-ALT sy-vline 
WA_RELR_GBGENERAL_STR-FLUR sy-vline 
WA_RELR_GBGENERAL_STR-LSBNR sy-vline 
WA_RELR_GBGENERAL_STR-XLAGE sy-vline 
WA_RELR_GBGENERAL_STR-FLAECHE sy-vline 
WA_RELR_GBGENERAL_STR-EINHEIT sy-vline 
WA_RELR_GBGENERAL_STR-ROETUNG sy-vline 
WA_RELR_GBGENERAL_STR-INTRENO sy-vline 
WA_RELR_GBGENERAL_STR-WIRTART sy-vline 
WA_RELR_GBGENERAL_STR-SLFDFL sy-vline 
WA_RELR_GBGENERAL_STR-HERRSCHART sy-vline 
WA_RELR_GBGENERAL_STR-MITEIG sy-vline 
WA_RELR_GBGENERAL_STR-ZU sy-vline 
WA_RELR_GBGENERAL_STR-FLUR_ERB sy-vline 
WA_RELR_GBGENERAL_STR-EIG_NAME_ERB sy-vline 
WA_RELR_GBGENERAL_STR-SGRBA sy-vline 
WA_RELR_GBGENERAL_STR-XGBAMT sy-vline      INTO ld_text SEPARATED BY SPACE.

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