ABAP Select data from SAP table VENH_WA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VENH_WA
*  INTO TABLE @DATA(IT_VENH_WA2).
*--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_VENH_WA INDEX 1 INTO DATA(WA_VENH_WA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VENH_WA>-MANDT = 1.
<VENH_WA>-HITYP = 1.
<VENH_WA>-LIFNR = 1.
<VENH_WA>-EKORG = 1.
<VENH_WA>-DATAB = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VENH_WA-DATBI, sy-vline,
  WA_VENH_WA-HLIFNR, sy-vline,
  WA_VENH_WA-HEKORG, sy-vline,
  WA_VENH_WA-GRPNO, sy-vline,
  WA_VENH_WA-BOLRE, sy-vline,
  WA_VENH_WA-PRFRE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VENH_WA 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_VENH_WA 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_VENH_WA INTO WA_VENH_WA.


*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 LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VENH_WA-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VENH_WA-LIFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field HLIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VENH_WA-HLIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VENH_WA-HLIFNR.
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_VENH_WA_STR, 
MANDT TYPE STRING,
HITYP TYPE STRING,
LIFNR TYPE STRING,
EKORG TYPE STRING,
DATAB TYPE STRING,
DATBI TYPE STRING,
HLIFNR TYPE STRING,
HEKORG TYPE STRING,
GRPNO TYPE STRING,
BOLRE TYPE STRING,
PRFRE TYPE STRING,
HZUOR TYPE STRING,
KZ TYPE STRING,
ERROR TYPE STRING,
ACTUAL TYPE STRING,
DISPLAYED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VENH_WA_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_VENH_WA_STR-MANDT sy-vline 
WA_VENH_WA_STR-HITYP sy-vline 
WA_VENH_WA_STR-LIFNR sy-vline 
WA_VENH_WA_STR-EKORG sy-vline 
WA_VENH_WA_STR-DATAB sy-vline 
WA_VENH_WA_STR-DATBI sy-vline 
WA_VENH_WA_STR-HLIFNR sy-vline 
WA_VENH_WA_STR-HEKORG sy-vline 
WA_VENH_WA_STR-GRPNO sy-vline 
WA_VENH_WA_STR-BOLRE sy-vline 
WA_VENH_WA_STR-PRFRE sy-vline 
WA_VENH_WA_STR-HZUOR sy-vline 
WA_VENH_WA_STR-KZ sy-vline 
WA_VENH_WA_STR-ERROR sy-vline 
WA_VENH_WA_STR-ACTUAL sy-vline 
WA_VENH_WA_STR-DISPLAYED sy-vline      INTO ld_text SEPARATED BY SPACE.

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