ABAP Select data from SAP table V_BWOM_RHIER_LIN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_BWOM_RHIER_LIN
*  INTO TABLE @DATA(IT_V_BWOM_RHIER_LIN2).
*--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_V_BWOM_RHIER_LIN INDEX 1 INTO DATA(WA_V_BWOM_RHIER_LIN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_BWOM_RHIER_LIN>-MANDT = 1.
<V_BWOM_RHIER_LIN>-KOKRS = 1.
<V_BWOM_RHIER_LIN>-HIENM = 1.
<V_BWOM_RHIER_LIN>-VERSION = 1.
<V_BWOM_RHIER_LIN>-LINE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_BWOM_RHIER_LIN-DBCRIND, sy-vline,
  WA_V_BWOM_RHIER_LIN-GRPNAME, sy-vline,
  WA_V_BWOM_RHIER_LIN-PARENTLINE, sy-vline,
  WA_V_BWOM_RHIER_LIN-TEXT, sy-vline,
  WA_V_BWOM_RHIER_LIN-HIERFLG, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_V_BWOM_RHIER_LIN 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_V_BWOM_RHIER_LIN 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_V_BWOM_RHIER_LIN INTO WA_V_BWOM_RHIER_LIN.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_V_BWOM_RHIER_LIN_STR, 
MANDT TYPE STRING,
KOKRS TYPE STRING,
HIENM TYPE STRING,
VERSION TYPE STRING,
LINE TYPE STRING,
DBCRIND TYPE STRING,
GRPNAME TYPE STRING,
PARENTLINE TYPE STRING,
TEXT TYPE STRING,
HIERFLG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_BWOM_RHIER_LIN_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_V_BWOM_RHIER_LIN_STR-MANDT sy-vline 
WA_V_BWOM_RHIER_LIN_STR-KOKRS sy-vline 
WA_V_BWOM_RHIER_LIN_STR-HIENM sy-vline 
WA_V_BWOM_RHIER_LIN_STR-VERSION sy-vline 
WA_V_BWOM_RHIER_LIN_STR-LINE sy-vline 
WA_V_BWOM_RHIER_LIN_STR-DBCRIND sy-vline 
WA_V_BWOM_RHIER_LIN_STR-GRPNAME sy-vline 
WA_V_BWOM_RHIER_LIN_STR-PARENTLINE sy-vline 
WA_V_BWOM_RHIER_LIN_STR-TEXT sy-vline 
WA_V_BWOM_RHIER_LIN_STR-HIERFLG sy-vline      INTO ld_text SEPARATED BY SPACE.

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