ABAP Select data from SAP table E1WVINH into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP E1WVINH 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 E1WVINH. 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 E1WVINH 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_E1WVINH TYPE STANDARD TABLE OF E1WVINH,
      WA_E1WVINH TYPE E1WVINH,
      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: <E1WVINH> TYPE E1WVINH.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E1WVINH.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E1WVINH
  INTO TABLE IT_E1WVINH.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E1WVINH
*  INTO TABLE @DATA(IT_E1WVINH2).
*--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_E1WVINH INDEX 1 INTO DATA(WA_E1WVINH2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E1WVINH ASSIGNING <E1WVINH>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E1WVINH>-LGORT = 1.
<E1WVINH>-IBLNR = 1.
<E1WVINH>-GJAHR = 1.
<E1WVINH>-SOBKZ = 1.
<E1WVINH>-GIDAT = 1.

ENDLOOP.

LOOP AT IT_E1WVINH INTO WA_E1WVINH.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E1WVINH-XBLNI, sy-vline,
  WA_E1WVINH-DNAME, sy-vline,
  WA_E1WVINH-DDATE, sy-vline,
  WA_E1WVINH-DTIME, sy-vline,
  WA_E1WVINH-LGOBE, sy-vline,
  WA_E1WVINH-SOTXT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E1WVINH 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_E1WVINH 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_E1WVINH INTO WA_E1WVINH.


*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_E1WVINH-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E1WVINH-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_E1WVINH_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,
INVNU TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E1WVINH_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_E1WVINH_STR-LGORT sy-vline 
WA_E1WVINH_STR-IBLNR sy-vline 
WA_E1WVINH_STR-GJAHR sy-vline 
WA_E1WVINH_STR-SOBKZ sy-vline 
WA_E1WVINH_STR-GIDAT sy-vline 
WA_E1WVINH_STR-XBLNI sy-vline 
WA_E1WVINH_STR-DNAME sy-vline 
WA_E1WVINH_STR-DDATE sy-vline 
WA_E1WVINH_STR-DTIME sy-vline 
WA_E1WVINH_STR-LGOBE sy-vline 
WA_E1WVINH_STR-SOTXT sy-vline 
WA_E1WVINH_STR-FILIALE sy-vline 
WA_E1WVINH_STR-NAME1 sy-vline 
WA_E1WVINH_STR-NAME2 sy-vline 
WA_E1WVINH_STR-VPDAT sy-vline 
WA_E1WVINH_STR-KEORD sy-vline 
WA_E1WVINH_STR-ORDNG sy-vline 
WA_E1WVINH_STR-INVNU sy-vline      INTO ld_text SEPARATED BY SPACE.

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