ABAP Select data from SAP table FKK_CRM_INVOICE into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FKK_CRM_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 FKK_CRM_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 FKK_CRM_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_FKK_CRM_INVOICE TYPE STANDARD TABLE OF FKK_CRM_INVOICE,
      WA_FKK_CRM_INVOICE TYPE FKK_CRM_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: <FKK_CRM_INVOICE> TYPE FKK_CRM_INVOICE.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKK_CRM_INVOICE
*  INTO TABLE @DATA(IT_FKK_CRM_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_FKK_CRM_INVOICE INDEX 1 INTO DATA(WA_FKK_CRM_INVOICE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKK_CRM_INVOICE>-INVID = 1.
<FKK_CRM_INVOICE>-DUE_DATE = 1.
<FKK_CRM_INVOICE>-CURRENCY = 1.
<FKK_CRM_INVOICE>-AMOUNT = 1.
<FKK_CRM_INVOICE>-OPENAMOUNT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKK_CRM_INVOICE-DOCT1, sy-vline,
  WA_FKK_CRM_INVOICE-INV_DATE, sy-vline,
  WA_FKK_CRM_INVOICE-INVOICE_PATH, sy-vline,
  WA_FKK_CRM_INVOICE-XURL, sy-vline,
  WA_FKK_CRM_INVOICE-OPBEL, sy-vline,
  WA_FKK_CRM_INVOICE-ICON, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKK_CRM_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_FKK_CRM_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_FKK_CRM_INVOICE INTO WA_FKK_CRM_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 OPBEL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKK_CRM_INVOICE-OPBEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKK_CRM_INVOICE-OPBEL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AUGBL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKK_CRM_INVOICE-AUGBL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKK_CRM_INVOICE-AUGBL.
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_FKK_CRM_INVOICE_STR, 
INVID TYPE STRING,
DUE_DATE TYPE STRING,
CURRENCY TYPE STRING,
AMOUNT TYPE STRING,
OPENAMOUNT TYPE STRING,
DOCT1 TYPE STRING,
INV_DATE TYPE STRING,
INVOICE_PATH TYPE STRING,
XURL TYPE STRING,
OPBEL TYPE STRING,
ICON TYPE STRING,
AUGBL TYPE STRING,
STATUS TYPE STRING,
STATTXT TYPE STRING,
IDISP TYPE STRING,
LINCT TYPE STRING,
XPDF TYPE STRING,
XHTML TYPE STRING,
XXML TYPE STRING,
XCUST1 TYPE STRING,
XCUST2 TYPE STRING,
CURRENCY_ORI TYPE STRING,
AMOUNT_ORI TYPE STRING,
OPEN_AMOUNT_ORI TYPE STRING,
OPEN_AMOUNT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKK_CRM_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_FKK_CRM_INVOICE_STR-INVID sy-vline 
WA_FKK_CRM_INVOICE_STR-DUE_DATE sy-vline 
WA_FKK_CRM_INVOICE_STR-CURRENCY sy-vline 
WA_FKK_CRM_INVOICE_STR-AMOUNT sy-vline 
WA_FKK_CRM_INVOICE_STR-OPENAMOUNT sy-vline 
WA_FKK_CRM_INVOICE_STR-DOCT1 sy-vline 
WA_FKK_CRM_INVOICE_STR-INV_DATE sy-vline 
WA_FKK_CRM_INVOICE_STR-INVOICE_PATH sy-vline 
WA_FKK_CRM_INVOICE_STR-XURL sy-vline 
WA_FKK_CRM_INVOICE_STR-OPBEL sy-vline 
WA_FKK_CRM_INVOICE_STR-ICON sy-vline 
WA_FKK_CRM_INVOICE_STR-AUGBL sy-vline 
WA_FKK_CRM_INVOICE_STR-STATUS sy-vline 
WA_FKK_CRM_INVOICE_STR-STATTXT sy-vline 
WA_FKK_CRM_INVOICE_STR-IDISP sy-vline 
WA_FKK_CRM_INVOICE_STR-LINCT sy-vline 
WA_FKK_CRM_INVOICE_STR-XPDF sy-vline 
WA_FKK_CRM_INVOICE_STR-XHTML sy-vline 
WA_FKK_CRM_INVOICE_STR-XXML sy-vline 
WA_FKK_CRM_INVOICE_STR-XCUST1 sy-vline 
WA_FKK_CRM_INVOICE_STR-XCUST2 sy-vline 
WA_FKK_CRM_INVOICE_STR-CURRENCY_ORI sy-vline 
WA_FKK_CRM_INVOICE_STR-AMOUNT_ORI sy-vline 
WA_FKK_CRM_INVOICE_STR-OPEN_AMOUNT_ORI sy-vline 
WA_FKK_CRM_INVOICE_STR-OPEN_AMOUNT sy-vline      INTO ld_text SEPARATED BY SPACE.

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