ABAP Select data from SAP table ACHVW into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ACHVW 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 ACHVW. 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 ACHVW 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_ACHVW TYPE STANDARD TABLE OF ACHVW,
      WA_ACHVW TYPE ACHVW,
      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: <ACHVW> TYPE ACHVW.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ACHVW
*  INTO TABLE @DATA(IT_ACHVW2).
*--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_ACHVW INDEX 1 INTO DATA(WA_ACHVW2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ACHVW>-MANDT = 1.
<ACHVW>-XZUGA = 1.
<ACHVW>-WERKS = 1.
<ACHVW>-MATNR = 1.
<ACHVW>-CHARG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ACHVW-AUFNR, sy-vline,
  WA_ACHVW-AUFPS, sy-vline,
  WA_ACHVW-EBELN, sy-vline,
  WA_ACHVW-EBELP, sy-vline,
  WA_ACHVW-KDAUF, sy-vline,
  WA_ACHVW-KDPOS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ACHVW 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_ACHVW 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_ACHVW INTO WA_ACHVW.


*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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_ACHVW-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ACHVW-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AUFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ACHVW-AUFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ACHVW-AUFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ACHVW-EBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ACHVW-EBELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KDAUF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ACHVW-KDAUF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ACHVW-KDAUF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field MBLNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ACHVW-MBLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ACHVW-MBLNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field MJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_ACHVW-MJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ACHVW-MJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ACHVW-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ACHVW-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field UMMAT
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_ACHVW-UMMAT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ACHVW-UMMAT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ACHVW-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ACHVW-LIFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ACHVW-KUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ACHVW-KUNNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ACHVW-VBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ACHVW-VBELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field /CWM/MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ACHVW-/CWM/MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ACHVW-/CWM/MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field MILL_OC_AUFNR_O
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ACHVW-MILL_OC_AUFNR_O
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ACHVW-MILL_OC_AUFNR_O.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field SPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_ACHVW-SPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ACHVW-SPRAS.
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_ACHVW_STR, 
MANDT TYPE STRING,
XZUGA TYPE STRING,
WERKS TYPE STRING,
MATNR TYPE STRING,
CHARG TYPE STRING,
AUFNR TYPE STRING,
AUFPS TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
KDAUF TYPE STRING,
KDPOS TYPE STRING,
MBLNR TYPE STRING,
MJAHR TYPE STRING,
ZEILE TYPE STRING,
BUDAT TYPE STRING,
SHKZG TYPE STRING,
BWART TYPE STRING,
XSTBW TYPE STRING,
KZBEW TYPE STRING,
SOBKZ TYPE STRING,
MENGE TYPE STRING,
MEINS TYPE STRING,
ZUSCH TYPE STRING,
ZUSTD TYPE STRING,
VERAB TYPE STRING,
VFDAT TYPE STRING,
UMWRK TYPE STRING,
UMMAT TYPE STRING,
UMCHA TYPE STRING,
LIFNR TYPE STRING,
LICHA TYPE STRING,
KUNNR TYPE STRING,
PSTYP TYPE STRING,
AUTYP TYPE STRING,
VBELN TYPE STRING,
POSNR TYPE STRING,
/CWM/MENGE TYPE STRING,
/CWM/MEINS TYPE STRING,
DUMMY TYPE STRING,
MILL_OC_AUFNR_O TYPE STRING,
KZ TYPE STRING,
ZAEHL TYPE STRING,
ZUABKZ TYPE STRING,
XSORTFELD TYPE STRING,
LEVEL TYPE STRING,
SPRAS TYPE STRING,
MAKTX TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ACHVW_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_ACHVW_STR-MANDT sy-vline 
WA_ACHVW_STR-XZUGA sy-vline 
WA_ACHVW_STR-WERKS sy-vline 
WA_ACHVW_STR-MATNR sy-vline 
WA_ACHVW_STR-CHARG sy-vline 
WA_ACHVW_STR-AUFNR sy-vline 
WA_ACHVW_STR-AUFPS sy-vline 
WA_ACHVW_STR-EBELN sy-vline 
WA_ACHVW_STR-EBELP sy-vline 
WA_ACHVW_STR-KDAUF sy-vline 
WA_ACHVW_STR-KDPOS sy-vline 
WA_ACHVW_STR-MBLNR sy-vline 
WA_ACHVW_STR-MJAHR sy-vline 
WA_ACHVW_STR-ZEILE sy-vline 
WA_ACHVW_STR-BUDAT sy-vline 
WA_ACHVW_STR-SHKZG sy-vline 
WA_ACHVW_STR-BWART sy-vline 
WA_ACHVW_STR-XSTBW sy-vline 
WA_ACHVW_STR-KZBEW sy-vline 
WA_ACHVW_STR-SOBKZ sy-vline 
WA_ACHVW_STR-MENGE sy-vline 
WA_ACHVW_STR-MEINS sy-vline 
WA_ACHVW_STR-ZUSCH sy-vline 
WA_ACHVW_STR-ZUSTD sy-vline 
WA_ACHVW_STR-VERAB sy-vline 
WA_ACHVW_STR-VFDAT sy-vline 
WA_ACHVW_STR-UMWRK sy-vline 
WA_ACHVW_STR-UMMAT sy-vline 
WA_ACHVW_STR-UMCHA sy-vline 
WA_ACHVW_STR-LIFNR sy-vline 
WA_ACHVW_STR-LICHA sy-vline 
WA_ACHVW_STR-KUNNR sy-vline 
WA_ACHVW_STR-PSTYP sy-vline 
WA_ACHVW_STR-AUTYP sy-vline 
WA_ACHVW_STR-VBELN sy-vline 
WA_ACHVW_STR-POSNR sy-vline 
WA_ACHVW_STR-/CWM/MENGE sy-vline 
WA_ACHVW_STR-/CWM/MEINS sy-vline 
WA_ACHVW_STR-DUMMY sy-vline 
WA_ACHVW_STR-MILL_OC_AUFNR_O sy-vline 
WA_ACHVW_STR-KZ sy-vline 
WA_ACHVW_STR-ZAEHL sy-vline 
WA_ACHVW_STR-ZUABKZ sy-vline 
WA_ACHVW_STR-XSORTFELD sy-vline 
WA_ACHVW_STR-LEVEL sy-vline 
WA_ACHVW_STR-SPRAS sy-vline 
WA_ACHVW_STR-MAKTX sy-vline      INTO ld_text SEPARATED BY SPACE.

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