ABAP Select data from SAP table EWUPAK into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EWUPAK
*  INTO TABLE @DATA(IT_EWUPAK2).
*--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_EWUPAK INDEX 1 INTO DATA(WA_EWUPAK2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EWUPAK>-MANDANT = 1.
<EWUPAK>-PAKET = 1.
<EWUPAK>-RELEAS = 1.
<EWUPAK>-PHASE = 1.
<EWUPAK>-DATUM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EWUPAK-RESFLAG, sy-vline,
  WA_EWUPAK-ACTFLAG, sy-vline,
  WA_EWUPAK-PRODFLAG, sy-vline,
  WA_EWUPAK-PAKETTYP, sy-vline,
  WA_EWUPAK-PAKETSICH, sy-vline,
  WA_EWUPAK-PLANJAHR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EWUPAK 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_EWUPAK 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_EWUPAK INTO WA_EWUPAK.


*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 PLANJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_EWUPAK-PLANJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EWUPAK-PLANJAHR.
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_EWUPAK_STR, 
MANDANT TYPE STRING,
PAKET TYPE STRING,
RELEAS TYPE STRING,
PHASE TYPE STRING,
DATUM TYPE STRING,
RESFLAG TYPE STRING,
ACTFLAG TYPE STRING,
PRODFLAG TYPE STRING,
PAKETTYP TYPE STRING,
PAKETSICH TYPE STRING,
PLANJAHR TYPE STRING,
MACFLAG TYPE STRING,
IDXFLAG TYPE STRING,
V01FLAG TYPE STRING,
V02FLAG TYPE STRING,
V03FLAG TYPE STRING,
V04FLAG TYPE STRING,
V05FLAG TYPE STRING,
V06FLAG TYPE STRING,
V07FLAG TYPE STRING,
V08FLAG TYPE STRING,
V09FLAG TYPE STRING,
V10FLAG TYPE STRING,
V11FLAG TYPE STRING,
V12FLAG TYPE STRING,
V13FLAG TYPE STRING,
V14FLAG TYPE STRING,
V15FLAG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EWUPAK_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_EWUPAK_STR-MANDANT sy-vline 
WA_EWUPAK_STR-PAKET sy-vline 
WA_EWUPAK_STR-RELEAS sy-vline 
WA_EWUPAK_STR-PHASE sy-vline 
WA_EWUPAK_STR-DATUM sy-vline 
WA_EWUPAK_STR-RESFLAG sy-vline 
WA_EWUPAK_STR-ACTFLAG sy-vline 
WA_EWUPAK_STR-PRODFLAG sy-vline 
WA_EWUPAK_STR-PAKETTYP sy-vline 
WA_EWUPAK_STR-PAKETSICH sy-vline 
WA_EWUPAK_STR-PLANJAHR sy-vline 
WA_EWUPAK_STR-MACFLAG sy-vline 
WA_EWUPAK_STR-IDXFLAG sy-vline 
WA_EWUPAK_STR-V01FLAG sy-vline 
WA_EWUPAK_STR-V02FLAG sy-vline 
WA_EWUPAK_STR-V03FLAG sy-vline 
WA_EWUPAK_STR-V04FLAG sy-vline 
WA_EWUPAK_STR-V05FLAG sy-vline 
WA_EWUPAK_STR-V06FLAG sy-vline 
WA_EWUPAK_STR-V07FLAG sy-vline 
WA_EWUPAK_STR-V08FLAG sy-vline 
WA_EWUPAK_STR-V09FLAG sy-vline 
WA_EWUPAK_STR-V10FLAG sy-vline 
WA_EWUPAK_STR-V11FLAG sy-vline 
WA_EWUPAK_STR-V12FLAG sy-vline 
WA_EWUPAK_STR-V13FLAG sy-vline 
WA_EWUPAK_STR-V14FLAG sy-vline 
WA_EWUPAK_STR-V15FLAG sy-vline      INTO ld_text SEPARATED BY SPACE.

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