ABAP Select data from SAP table EAUSDVERWL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EAUSDVERWL
*  INTO TABLE @DATA(IT_EAUSDVERWL2).
*--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_EAUSDVERWL INDEX 1 INTO DATA(WA_EAUSDVERWL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EAUSDVERWL>-VORLAUSZ = 1.
<EAUSDVERWL>-AUSZDAT = 1.
<EAUSDVERWL>-AUSZDAT_NEU = 1.
<EAUSDVERWL>-DEPARTUREDATE = 1.
<EAUSDVERWL>-DEPARTUREDATENEW = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EAUSDVERWL-AUSZSTAT, sy-vline,
  WA_EAUSDVERWL-AUSZSTATT, sy-vline,
  WA_EAUSDVERWL-WORKIT, sy-vline,
  WA_EAUSDVERWL-AKLASSE, sy-vline,
  WA_EAUSDVERWL-AKLASSET, sy-vline,
  WA_EAUSDVERWL-SPARTE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EAUSDVERWL 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_EAUSDVERWL 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_EAUSDVERWL INTO WA_EAUSDVERWL.


*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 VORLAUSZ
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EAUSDVERWL-VORLAUSZ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EAUSDVERWL-VORLAUSZ.
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_EAUSDVERWL_STR, 
VORLAUSZ TYPE STRING,
AUSZDAT TYPE STRING,
AUSZDAT_NEU TYPE STRING,
DEPARTUREDATE TYPE STRING,
DEPARTUREDATENEW TYPE STRING,
AUSZSTAT TYPE STRING,
AUSZSTATT TYPE STRING,
WORKIT TYPE STRING,
AKLASSE TYPE STRING,
AKLASSET TYPE STRING,
SPARTE TYPE STRING,
SPARTET TYPE STRING,
BUKRS TYPE STRING,
BUKRST TYPE STRING,
AUTSICHWARN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EAUSDVERWL_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_EAUSDVERWL_STR-VORLAUSZ sy-vline 
WA_EAUSDVERWL_STR-AUSZDAT sy-vline 
WA_EAUSDVERWL_STR-AUSZDAT_NEU sy-vline 
WA_EAUSDVERWL_STR-DEPARTUREDATE sy-vline 
WA_EAUSDVERWL_STR-DEPARTUREDATENEW sy-vline 
WA_EAUSDVERWL_STR-AUSZSTAT sy-vline 
WA_EAUSDVERWL_STR-AUSZSTATT sy-vline 
WA_EAUSDVERWL_STR-WORKIT sy-vline 
WA_EAUSDVERWL_STR-AKLASSE sy-vline 
WA_EAUSDVERWL_STR-AKLASSET sy-vline 
WA_EAUSDVERWL_STR-SPARTE sy-vline 
WA_EAUSDVERWL_STR-SPARTET sy-vline 
WA_EAUSDVERWL_STR-BUKRS sy-vline 
WA_EAUSDVERWL_STR-BUKRST sy-vline 
WA_EAUSDVERWL_STR-AUTSICHWARN sy-vline      INTO ld_text SEPARATED BY SPACE.

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