ABAP Select data from SAP table REXC_CH_VIBDBU into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REXC_CH_VIBDBU
*  INTO TABLE @DATA(IT_REXC_CH_VIBDBU2).
*--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_REXC_CH_VIBDBU INDEX 1 INTO DATA(WA_REXC_CH_VIBDBU2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REXC_CH_VIBDBU>-OBJCOND = 1.
<REXC_CH_VIBDBU>-OBJCAT = 1.
<REXC_CH_VIBDBU>-YEARDECONSTR = 1.
<REXC_CH_VIBDBU>-AREAVALUE = 1.
<REXC_CH_VIBDBU>-HEATINGTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REXC_CH_VIBDBU-ENERGYHEAT, sy-vline,
  WA_REXC_CH_VIBDBU-ENERGYWATER, sy-vline,
  WA_REXC_CH_VIBDBU-HOTWATERSUPPLY, sy-vline,
  WA_REXC_CH_VIBDBU-POWERCONSUM, sy-vline,
  WA_REXC_CH_VIBDBU-GLAZING, sy-vline,
  WA_REXC_CH_VIBDBU-ADMINNO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REXC_CH_VIBDBU 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_REXC_CH_VIBDBU 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_REXC_CH_VIBDBU INTO WA_REXC_CH_VIBDBU.


*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 ADMINNO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_REXC_CH_VIBDBU-ADMINNO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REXC_CH_VIBDBU-ADMINNO.
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_REXC_CH_VIBDBU_STR, 
OBJCOND TYPE STRING,
OBJCAT TYPE STRING,
YEARDECONSTR TYPE STRING,
AREAVALUE TYPE STRING,
HEATINGTYPE TYPE STRING,
ENERGYHEAT TYPE STRING,
ENERGYWATER TYPE STRING,
HOTWATERSUPPLY TYPE STRING,
POWERCONSUM TYPE STRING,
GLAZING TYPE STRING,
ADMINNO TYPE STRING,
ADMINXGETXT TYPE STRING,
GEMEINDECH TYPE STRING,
BANZGECH TYPE STRING,
SSTCKBISCH TYPE STRING,
SLIFTBISCH TYPE STRING,
AUGESCHCH TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REXC_CH_VIBDBU_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_REXC_CH_VIBDBU_STR-OBJCOND sy-vline 
WA_REXC_CH_VIBDBU_STR-OBJCAT sy-vline 
WA_REXC_CH_VIBDBU_STR-YEARDECONSTR sy-vline 
WA_REXC_CH_VIBDBU_STR-AREAVALUE sy-vline 
WA_REXC_CH_VIBDBU_STR-HEATINGTYPE sy-vline 
WA_REXC_CH_VIBDBU_STR-ENERGYHEAT sy-vline 
WA_REXC_CH_VIBDBU_STR-ENERGYWATER sy-vline 
WA_REXC_CH_VIBDBU_STR-HOTWATERSUPPLY sy-vline 
WA_REXC_CH_VIBDBU_STR-POWERCONSUM sy-vline 
WA_REXC_CH_VIBDBU_STR-GLAZING sy-vline 
WA_REXC_CH_VIBDBU_STR-ADMINNO sy-vline 
WA_REXC_CH_VIBDBU_STR-ADMINXGETXT sy-vline 
WA_REXC_CH_VIBDBU_STR-GEMEINDECH sy-vline 
WA_REXC_CH_VIBDBU_STR-BANZGECH sy-vline 
WA_REXC_CH_VIBDBU_STR-SSTCKBISCH sy-vline 
WA_REXC_CH_VIBDBU_STR-SLIFTBISCH sy-vline 
WA_REXC_CH_VIBDBU_STR-AUGESCHCH sy-vline      INTO ld_text SEPARATED BY SPACE.

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