ABAP Select data from SAP table DWBEW into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DWBEW
*  INTO TABLE @DATA(IT_DWBEW2).
*--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_DWBEW INDEX 1 INTO DATA(WA_DWBEW2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DWBEW>-MANDT = 1.
<DWBEW>-MATNR = 1.
<DWBEW>-BWKEY = 1.
<DWBEW>-BWTAR = 1.
<DWBEW>-MEINH = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DWBEW-LBKUM, sy-vline,
  WA_DWBEW-SALK3, sy-vline,
  WA_DWBEW-VPRSV, sy-vline,
  WA_DWBEW-VERPR, sy-vline,
  WA_DWBEW-STPRS, sy-vline,
  WA_DWBEW-PEINH, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DWBEW 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_DWBEW 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_DWBEW INTO WA_DWBEW.


*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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_DWBEW-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DWBEW-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_DWBEW-MEINH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DWBEW-MEINH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field LFGJA
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_DWBEW-LFGJA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DWBEW-LFGJA.
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_DWBEW_STR, 
MANDT TYPE STRING,
MATNR TYPE STRING,
BWKEY TYPE STRING,
BWTAR TYPE STRING,
MEINH TYPE STRING,
LBKUM TYPE STRING,
SALK3 TYPE STRING,
VPRSV TYPE STRING,
VERPR TYPE STRING,
STPRS TYPE STRING,
PEINH TYPE STRING,
BKLAS TYPE STRING,
SALKV TYPE STRING,
VMKUM TYPE STRING,
VMSAL TYPE STRING,
VMVPR TYPE STRING,
VMVER TYPE STRING,
VMSTP TYPE STRING,
VMPEI TYPE STRING,
VMBKL TYPE STRING,
VMSAV TYPE STRING,
VJKUM TYPE STRING,
VJSAL TYPE STRING,
VJVPR TYPE STRING,
VJVER TYPE STRING,
VJSTP TYPE STRING,
VJPEI TYPE STRING,
VJBKL TYPE STRING,
VJSAV TYPE STRING,
LFGJA TYPE STRING,
LFMON TYPE STRING,
BWTTY TYPE STRING,
STPRV TYPE STRING,
LAEPR TYPE STRING,
ZKPRS TYPE STRING,
ZKDAT TYPE STRING,
TIMESTAMP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DWBEW_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_DWBEW_STR-MANDT sy-vline 
WA_DWBEW_STR-MATNR sy-vline 
WA_DWBEW_STR-BWKEY sy-vline 
WA_DWBEW_STR-BWTAR sy-vline 
WA_DWBEW_STR-MEINH sy-vline 
WA_DWBEW_STR-LBKUM sy-vline 
WA_DWBEW_STR-SALK3 sy-vline 
WA_DWBEW_STR-VPRSV sy-vline 
WA_DWBEW_STR-VERPR sy-vline 
WA_DWBEW_STR-STPRS sy-vline 
WA_DWBEW_STR-PEINH sy-vline 
WA_DWBEW_STR-BKLAS sy-vline 
WA_DWBEW_STR-SALKV sy-vline 
WA_DWBEW_STR-VMKUM sy-vline 
WA_DWBEW_STR-VMSAL sy-vline 
WA_DWBEW_STR-VMVPR sy-vline 
WA_DWBEW_STR-VMVER sy-vline 
WA_DWBEW_STR-VMSTP sy-vline 
WA_DWBEW_STR-VMPEI sy-vline 
WA_DWBEW_STR-VMBKL sy-vline 
WA_DWBEW_STR-VMSAV sy-vline 
WA_DWBEW_STR-VJKUM sy-vline 
WA_DWBEW_STR-VJSAL sy-vline 
WA_DWBEW_STR-VJVPR sy-vline 
WA_DWBEW_STR-VJVER sy-vline 
WA_DWBEW_STR-VJSTP sy-vline 
WA_DWBEW_STR-VJPEI sy-vline 
WA_DWBEW_STR-VJBKL sy-vline 
WA_DWBEW_STR-VJSAV sy-vline 
WA_DWBEW_STR-LFGJA sy-vline 
WA_DWBEW_STR-LFMON sy-vline 
WA_DWBEW_STR-BWTTY sy-vline 
WA_DWBEW_STR-STPRV sy-vline 
WA_DWBEW_STR-LAEPR sy-vline 
WA_DWBEW_STR-ZKPRS sy-vline 
WA_DWBEW_STR-ZKDAT sy-vline 
WA_DWBEW_STR-TIMESTAMP sy-vline      INTO ld_text SEPARATED BY SPACE.

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