ABAP Select data from SAP table EDOC_AR_INVOICE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EDOC_AR_INVOICE
*  INTO TABLE @DATA(IT_EDOC_AR_INVOICE2).
*--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_EDOC_AR_INVOICE INDEX 1 INTO DATA(WA_EDOC_AR_INVOICE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EDOC_AR_INVOICE>-MANDT = 1.
<EDOC_AR_INVOICE>-EDOC_GUID = 1.
<EDOC_AR_INVOICE>-BRNCH = 1.
<EDOC_AR_INVOICE>-CAE_REF = 1.
<EDOC_AR_INVOICE>-CAE_REFYR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EDOC_AR_INVOICE-CAE_REFTYP, sy-vline,
  WA_EDOC_AR_INVOICE-BUDAT, sy-vline,
  WA_EDOC_AR_INVOICE-DOCCLS, sy-vline,
  WA_EDOC_AR_INVOICE-J_1APRTCHR, sy-vline,
  WA_EDOC_AR_INVOICE-REF_NUM, sy-vline,
  WA_EDOC_AR_INVOICE-KUNNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EDOC_AR_INVOICE 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_EDOC_AR_INVOICE 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_EDOC_AR_INVOICE INTO WA_EDOC_AR_INVOICE.


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

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

*Conversion exit ALPHA, internal->external for field KUNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EDOC_AR_INVOICE-KUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EDOC_AR_INVOICE-KUNNR.
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_EDOC_AR_INVOICE_STR, 
MANDT TYPE STRING,
EDOC_GUID TYPE STRING,
BRNCH TYPE STRING,
CAE_REF TYPE STRING,
CAE_REFYR TYPE STRING,
CAE_REFTYP TYPE STRING,
BUDAT TYPE STRING,
DOCCLS TYPE STRING,
J_1APRTCHR TYPE STRING,
REF_NUM TYPE STRING,
KUNNR TYPE STRING,
ANX3_DATE TYPE STRING,
CAE_STATUS TYPE STRING,
CAE_REASON TYPE STRING,
REJ_REASON TYPE STRING,
CAE_NUM TYPE STRING,
CAE_DUEDATE TYPE STRING,
EI_FLAG TYPE STRING,
CUST_EI_FLAG TYPE STRING,
SALES_SERV_IND TYPE STRING,
UNIQUE_EXP_CODE TYPE STRING,
REASON_CONTING TYPE STRING,
CONTIN_BRNCH TYPE STRING,
ODN TYPE STRING,
BUKRS TYPE STRING,
DOCNUM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EDOC_AR_INVOICE_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_EDOC_AR_INVOICE_STR-MANDT sy-vline 
WA_EDOC_AR_INVOICE_STR-EDOC_GUID sy-vline 
WA_EDOC_AR_INVOICE_STR-BRNCH sy-vline 
WA_EDOC_AR_INVOICE_STR-CAE_REF sy-vline 
WA_EDOC_AR_INVOICE_STR-CAE_REFYR sy-vline 
WA_EDOC_AR_INVOICE_STR-CAE_REFTYP sy-vline 
WA_EDOC_AR_INVOICE_STR-BUDAT sy-vline 
WA_EDOC_AR_INVOICE_STR-DOCCLS sy-vline 
WA_EDOC_AR_INVOICE_STR-J_1APRTCHR sy-vline 
WA_EDOC_AR_INVOICE_STR-REF_NUM sy-vline 
WA_EDOC_AR_INVOICE_STR-KUNNR sy-vline 
WA_EDOC_AR_INVOICE_STR-ANX3_DATE sy-vline 
WA_EDOC_AR_INVOICE_STR-CAE_STATUS sy-vline 
WA_EDOC_AR_INVOICE_STR-CAE_REASON sy-vline 
WA_EDOC_AR_INVOICE_STR-REJ_REASON sy-vline 
WA_EDOC_AR_INVOICE_STR-CAE_NUM sy-vline 
WA_EDOC_AR_INVOICE_STR-CAE_DUEDATE sy-vline 
WA_EDOC_AR_INVOICE_STR-EI_FLAG sy-vline 
WA_EDOC_AR_INVOICE_STR-CUST_EI_FLAG sy-vline 
WA_EDOC_AR_INVOICE_STR-SALES_SERV_IND sy-vline 
WA_EDOC_AR_INVOICE_STR-UNIQUE_EXP_CODE sy-vline 
WA_EDOC_AR_INVOICE_STR-REASON_CONTING sy-vline 
WA_EDOC_AR_INVOICE_STR-CONTIN_BRNCH sy-vline 
WA_EDOC_AR_INVOICE_STR-ODN sy-vline 
WA_EDOC_AR_INVOICE_STR-BUKRS sy-vline 
WA_EDOC_AR_INVOICE_STR-DOCNUM sy-vline      INTO ld_text SEPARATED BY SPACE.

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