ABAP Select data from SAP table ACCPA into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ACCPA
*  INTO TABLE @DATA(IT_ACCPA2).
*--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_ACCPA INDEX 1 INTO DATA(WA_ACCPA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ACCPA>-POSNR_SD = 1.
<ACCPA>-KSCHL = 1.
<ACCPA>-STUNR = 1.
<ACCPA>-ZAEHK = 1.
<ACCPA>-FKART = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ACCPA-VKORG, sy-vline,
  WA_ACCPA-VTWEG, sy-vline,
  WA_ACCPA-KUNAG, sy-vline,
  WA_ACCPA-SPART, sy-vline,
  WA_ACCPA-FKDAT, sy-vline,
  WA_ACCPA-FBUDA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ACCPA 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_ACCPA 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_ACCPA INTO WA_ACCPA.


*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 KUNAG
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ACCPA-KUNAG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ACCPA-KUNAG.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit EXCRT, internal->external for field KURSK
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_ACCPA-KURSK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ACCPA-KURSK.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field VOLEH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ACCPA-VOLEH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ACCPA-VOLEH.
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_ACCPA_STR, 
POSNR_SD TYPE STRING,
KSCHL TYPE STRING,
STUNR TYPE STRING,
ZAEHK TYPE STRING,
FKART TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
KUNAG TYPE STRING,
SPART TYPE STRING,
FKDAT TYPE STRING,
FBUDA TYPE STRING,
AUBEL TYPE STRING,
AUPOS TYPE STRING,
FKIMG TYPE STRING,
VRKME TYPE STRING,
FKLMG TYPE STRING,
KAPPL TYPE STRING,
KNTYP TYPE STRING,
KURSK TYPE STRING,
KZZUAB TYPE STRING,
KINAK TYPE STRING,
NTGEW TYPE STRING,
BRGEW TYPE STRING,
GEWEI TYPE STRING,
VOLUM TYPE STRING,
VOLEH TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ACCPA_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_ACCPA_STR-POSNR_SD sy-vline 
WA_ACCPA_STR-KSCHL sy-vline 
WA_ACCPA_STR-STUNR sy-vline 
WA_ACCPA_STR-ZAEHK sy-vline 
WA_ACCPA_STR-FKART sy-vline 
WA_ACCPA_STR-VKORG sy-vline 
WA_ACCPA_STR-VTWEG sy-vline 
WA_ACCPA_STR-KUNAG sy-vline 
WA_ACCPA_STR-SPART sy-vline 
WA_ACCPA_STR-FKDAT sy-vline 
WA_ACCPA_STR-FBUDA sy-vline 
WA_ACCPA_STR-AUBEL sy-vline 
WA_ACCPA_STR-AUPOS sy-vline 
WA_ACCPA_STR-FKIMG sy-vline 
WA_ACCPA_STR-VRKME sy-vline 
WA_ACCPA_STR-FKLMG sy-vline 
WA_ACCPA_STR-KAPPL sy-vline 
WA_ACCPA_STR-KNTYP sy-vline 
WA_ACCPA_STR-KURSK sy-vline 
WA_ACCPA_STR-KZZUAB sy-vline 
WA_ACCPA_STR-KINAK sy-vline 
WA_ACCPA_STR-NTGEW sy-vline 
WA_ACCPA_STR-BRGEW sy-vline 
WA_ACCPA_STR-GEWEI sy-vline 
WA_ACCPA_STR-VOLUM sy-vline 
WA_ACCPA_STR-VOLEH sy-vline      INTO ld_text SEPARATED BY SPACE.

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