ABAP Select data from SAP table E3WVINI into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP E3WVINI 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 E3WVINI. 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 E3WVINI 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_E3WVINI TYPE STANDARD TABLE OF E3WVINI,
      WA_E3WVINI TYPE E3WVINI,
      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: <E3WVINI> TYPE E3WVINI.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E3WVINI.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E3WVINI
  INTO TABLE IT_E3WVINI.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E3WVINI
*  INTO TABLE @DATA(IT_E3WVINI2).
*--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_E3WVINI INDEX 1 INTO DATA(WA_E3WVINI2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E3WVINI ASSIGNING <E3WVINI>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E3WVINI>-ZEILI = 1.
<E3WVINI>-QUALARTNR = 1.
<E3WVINI>-ARTNR = 1.
<E3WVINI>-CHARG = 1.
<E3WVINI>-BSTAR = 1.

ENDLOOP.

LOOP AT IT_E3WVINI INTO WA_E3WVINI.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E3WVINI-ERFMG, sy-vline,
  WA_E3WVINI-ERFME, sy-vline,
  WA_E3WVINI-EXVKP, sy-vline,
  WA_E3WVINI-EXVKW, sy-vline,
  WA_E3WVINI-WAERS, sy-vline,
  WA_E3WVINI-LIFNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E3WVINI 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_E3WVINI 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_E3WVINI INTO WA_E3WVINI.


*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_E3WVINI-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E3WVINI-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_E3WVINI_STR, 
ZEILI TYPE STRING,
QUALARTNR TYPE STRING,
ARTNR TYPE STRING,
CHARG TYPE STRING,
BSTAR TYPE STRING,
ERFMG TYPE STRING,
ERFME TYPE STRING,
EXVKP TYPE STRING,
EXVKW TYPE STRING,
WAERS TYPE STRING,
LIFNR TYPE STRING,
XNULL TYPE STRING,
KWART TYPE STRING,
BTEXT TYPE STRING,
MAKTX TYPE STRING,
WWGPA TYPE STRING,
WWMAKTX TYPE STRING,
VPALT TYPE STRING,
PV_GRUND TYPE STRING,
VRKPE TYPE STRING,
ABTNR TYPE STRING,
ABTTXT TYPE STRING,
LAYVR TYPE STRING,
VTEXT TYPE STRING,
SORTF TYPE STRING,
LTEXT TYPE STRING,
SORF2 TYPE STRING,
IBLNR TYPE STRING,
GJAHR TYPE STRING,
SOBKZ TYPE STRING,
SOTXT TYPE STRING,
GIDAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E3WVINI_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_E3WVINI_STR-ZEILI sy-vline 
WA_E3WVINI_STR-QUALARTNR sy-vline 
WA_E3WVINI_STR-ARTNR sy-vline 
WA_E3WVINI_STR-CHARG sy-vline 
WA_E3WVINI_STR-BSTAR sy-vline 
WA_E3WVINI_STR-ERFMG sy-vline 
WA_E3WVINI_STR-ERFME sy-vline 
WA_E3WVINI_STR-EXVKP sy-vline 
WA_E3WVINI_STR-EXVKW sy-vline 
WA_E3WVINI_STR-WAERS sy-vline 
WA_E3WVINI_STR-LIFNR sy-vline 
WA_E3WVINI_STR-XNULL sy-vline 
WA_E3WVINI_STR-KWART sy-vline 
WA_E3WVINI_STR-BTEXT sy-vline 
WA_E3WVINI_STR-MAKTX sy-vline 
WA_E3WVINI_STR-WWGPA sy-vline 
WA_E3WVINI_STR-WWMAKTX sy-vline 
WA_E3WVINI_STR-VPALT sy-vline 
WA_E3WVINI_STR-PV_GRUND sy-vline 
WA_E3WVINI_STR-VRKPE sy-vline 
WA_E3WVINI_STR-ABTNR sy-vline 
WA_E3WVINI_STR-ABTTXT sy-vline 
WA_E3WVINI_STR-LAYVR sy-vline 
WA_E3WVINI_STR-VTEXT sy-vline 
WA_E3WVINI_STR-SORTF sy-vline 
WA_E3WVINI_STR-LTEXT sy-vline 
WA_E3WVINI_STR-SORF2 sy-vline 
WA_E3WVINI_STR-IBLNR sy-vline 
WA_E3WVINI_STR-GJAHR sy-vline 
WA_E3WVINI_STR-SOBKZ sy-vline 
WA_E3WVINI_STR-SOTXT sy-vline 
WA_E3WVINI_STR-GIDAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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