ABAP Select data from SAP table E2WVINH into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP E2WVINH 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 E2WVINH. 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 E2WVINH 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_E2WVINH TYPE STANDARD TABLE OF E2WVINH,
      WA_E2WVINH TYPE E2WVINH,
      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: <E2WVINH> TYPE E2WVINH.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E2WVINH.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E2WVINH
  INTO TABLE IT_E2WVINH.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E2WVINH
*  INTO TABLE @DATA(IT_E2WVINH2).
*--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_E2WVINH INDEX 1 INTO DATA(WA_E2WVINH2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E2WVINH ASSIGNING <E2WVINH>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E2WVINH>-LGORT = 1.
<E2WVINH>-IBLNR = 1.
<E2WVINH>-GJAHR = 1.
<E2WVINH>-SOBKZ = 1.
<E2WVINH>-GIDAT = 1.

ENDLOOP.

LOOP AT IT_E2WVINH INTO WA_E2WVINH.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E2WVINH-XBLNI, sy-vline,
  WA_E2WVINH-DNAME, sy-vline,
  WA_E2WVINH-DDATE, sy-vline,
  WA_E2WVINH-DTIME, sy-vline,
  WA_E2WVINH-LGOBE, sy-vline,
  WA_E2WVINH-SOTXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E2WVINH 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_E2WVINH 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_E2WVINH INTO WA_E2WVINH.


*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 GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_E2WVINH-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E2WVINH-GJAHR.
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_E2WVINH_STR, 
LGORT TYPE STRING,
IBLNR TYPE STRING,
GJAHR TYPE STRING,
SOBKZ TYPE STRING,
GIDAT TYPE STRING,
XBLNI TYPE STRING,
DNAME TYPE STRING,
DDATE TYPE STRING,
DTIME TYPE STRING,
LGOBE TYPE STRING,
SOTXT TYPE STRING,
FILIALE TYPE STRING,
NAME1 TYPE STRING,
NAME2 TYPE STRING,
VPDAT TYPE STRING,
KEORD TYPE STRING,
ORDNG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E2WVINH_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_E2WVINH_STR-LGORT sy-vline 
WA_E2WVINH_STR-IBLNR sy-vline 
WA_E2WVINH_STR-GJAHR sy-vline 
WA_E2WVINH_STR-SOBKZ sy-vline 
WA_E2WVINH_STR-GIDAT sy-vline 
WA_E2WVINH_STR-XBLNI sy-vline 
WA_E2WVINH_STR-DNAME sy-vline 
WA_E2WVINH_STR-DDATE sy-vline 
WA_E2WVINH_STR-DTIME sy-vline 
WA_E2WVINH_STR-LGOBE sy-vline 
WA_E2WVINH_STR-SOTXT sy-vline 
WA_E2WVINH_STR-FILIALE sy-vline 
WA_E2WVINH_STR-NAME1 sy-vline 
WA_E2WVINH_STR-NAME2 sy-vline 
WA_E2WVINH_STR-VPDAT sy-vline 
WA_E2WVINH_STR-KEORD sy-vline 
WA_E2WVINH_STR-ORDNG sy-vline      INTO ld_text SEPARATED BY SPACE.

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