ABAP Select data from SAP table REWBHIWB into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REWBHIWB
*  INTO TABLE @DATA(IT_REWBHIWB2).
*--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_REWBHIWB INDEX 1 INTO DATA(WA_REWBHIWB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REWBHIWB>-SWBNR = 1.
<REWBHIWB>-XWBNR = 1.
<REWBHIWB>-STAT = 1.
<REWBHIWB>-XSTAT = 1.
<REWBHIWB>-BWAEHRUNG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REWBHIWB-FEINS, sy-vline,
  WA_REWBHIWB-BUKRS, sy-vline,
  WA_REWBHIWB-BUTXT, sy-vline,
  WA_REWBHIWB-SWBIND, sy-vline,
  WA_REWBHIWB-SWBINDT, sy-vline,
  WA_REWBHIWB-I_SWBIND, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REWBHIWB 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_REWBHIWB 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_REWBHIWB INTO WA_REWBHIWB.


*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 FEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_REWBHIWB-FEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REWBHIWB-FEINS.
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_REWBHIWB_STR, 
SWBNR TYPE STRING,
XWBNR TYPE STRING,
STAT TYPE STRING,
XSTAT TYPE STRING,
BWAEHRUNG TYPE STRING,
FEINS TYPE STRING,
BUKRS TYPE STRING,
BUTXT TYPE STRING,
SWBIND TYPE STRING,
SWBINDT TYPE STRING,
I_SWBIND TYPE STRING,
XWBIND TYPE STRING,
STAT2 TYPE STRING,
XSTAT2 TYPE STRING,
BWAEHRUNGSUM60 TYPE STRING,
SUM60_AUFWNEU_JBETRAG TYPE STRING,
SUM60_AUFWNEU_RMBETRAG TYPE STRING,
SUM60_AUFWNEU_MBETRAG TYPE STRING,
SUM60_MIETEN_JBETRAG TYPE STRING,
SUM60_MIETEN_RMBETRAG TYPE STRING,
SUM60_MIETEN_MBETRAG TYPE STRING,
SUM60_AUFWALT_JBETRAG TYPE STRING,
SUM60_AUFWALT_RMBETRAG TYPE STRING,
SUM60_AUFWALT_MBETRAG TYPE STRING,
SUM60_UEBER_JBETRAG TYPE STRING,
SUM60_UEBER_RMBETRAG TYPE STRING,
SUM60_UEBER_MBETRAG TYPE STRING,
ZUDAT TYPE STRING,
ABDAT TYPE STRING,
XNUTZWERK TYPE STRING,
NUTZKAT TYPE STRING,
XNUTZKAT TYPE STRING,
XIHMA TYPE STRING,
DBINDBIS TYPE STRING,
ZWECK TYPE STRING,
XZWECK TYPE STRING,
WBAUPRG TYPE STRING,
BEZFERTIG TYPE STRING,
MAWYN TYPE STRING,
SUM10_GESAMT TYPE STRING,
SUM10_REYN TYPE STRING,
KOART TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REWBHIWB_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_REWBHIWB_STR-SWBNR sy-vline 
WA_REWBHIWB_STR-XWBNR sy-vline 
WA_REWBHIWB_STR-STAT sy-vline 
WA_REWBHIWB_STR-XSTAT sy-vline 
WA_REWBHIWB_STR-BWAEHRUNG sy-vline 
WA_REWBHIWB_STR-FEINS sy-vline 
WA_REWBHIWB_STR-BUKRS sy-vline 
WA_REWBHIWB_STR-BUTXT sy-vline 
WA_REWBHIWB_STR-SWBIND sy-vline 
WA_REWBHIWB_STR-SWBINDT sy-vline 
WA_REWBHIWB_STR-I_SWBIND sy-vline 
WA_REWBHIWB_STR-XWBIND sy-vline 
WA_REWBHIWB_STR-STAT2 sy-vline 
WA_REWBHIWB_STR-XSTAT2 sy-vline 
WA_REWBHIWB_STR-BWAEHRUNGSUM60 sy-vline 
WA_REWBHIWB_STR-SUM60_AUFWNEU_JBETRAG sy-vline 
WA_REWBHIWB_STR-SUM60_AUFWNEU_RMBETRAG sy-vline 
WA_REWBHIWB_STR-SUM60_AUFWNEU_MBETRAG sy-vline 
WA_REWBHIWB_STR-SUM60_MIETEN_JBETRAG sy-vline 
WA_REWBHIWB_STR-SUM60_MIETEN_RMBETRAG sy-vline 
WA_REWBHIWB_STR-SUM60_MIETEN_MBETRAG sy-vline 
WA_REWBHIWB_STR-SUM60_AUFWALT_JBETRAG sy-vline 
WA_REWBHIWB_STR-SUM60_AUFWALT_RMBETRAG sy-vline 
WA_REWBHIWB_STR-SUM60_AUFWALT_MBETRAG sy-vline 
WA_REWBHIWB_STR-SUM60_UEBER_JBETRAG sy-vline 
WA_REWBHIWB_STR-SUM60_UEBER_RMBETRAG sy-vline 
WA_REWBHIWB_STR-SUM60_UEBER_MBETRAG sy-vline 
WA_REWBHIWB_STR-ZUDAT sy-vline 
WA_REWBHIWB_STR-ABDAT sy-vline 
WA_REWBHIWB_STR-XNUTZWERK sy-vline 
WA_REWBHIWB_STR-NUTZKAT sy-vline 
WA_REWBHIWB_STR-XNUTZKAT sy-vline 
WA_REWBHIWB_STR-XIHMA sy-vline 
WA_REWBHIWB_STR-DBINDBIS sy-vline 
WA_REWBHIWB_STR-ZWECK sy-vline 
WA_REWBHIWB_STR-XZWECK sy-vline 
WA_REWBHIWB_STR-WBAUPRG sy-vline 
WA_REWBHIWB_STR-BEZFERTIG sy-vline 
WA_REWBHIWB_STR-MAWYN sy-vline 
WA_REWBHIWB_STR-SUM10_GESAMT sy-vline 
WA_REWBHIWB_STR-SUM10_REYN sy-vline 
WA_REWBHIWB_STR-KOART sy-vline      INTO ld_text SEPARATED BY SPACE.

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