ABAP Select data from SAP table TDS_RFC_INVOICE into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP TDS_RFC_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 TDS_RFC_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 TDS_RFC_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_TDS_RFC_INVOICE TYPE STANDARD TABLE OF TDS_RFC_INVOICE,
      WA_TDS_RFC_INVOICE TYPE TDS_RFC_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: <TDS_RFC_INVOICE> TYPE TDS_RFC_INVOICE.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TDS_RFC_INVOICE
*  INTO TABLE @DATA(IT_TDS_RFC_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_TDS_RFC_INVOICE INDEX 1 INTO DATA(WA_TDS_RFC_INVOICE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TDS_RFC_INVOICE>-VBELN = 1.
<TDS_RFC_INVOICE>-TRVOG = 1.
<TDS_RFC_INVOICE>-VBTYP = 1.
<TDS_RFC_INVOICE>-AUART = 1.
<TDS_RFC_INVOICE>-AUARTT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TDS_RFC_INVOICE-VKORG, sy-vline,
  WA_TDS_RFC_INVOICE-VTWEG, sy-vline,
  WA_TDS_RFC_INVOICE-SPART, sy-vline,
  WA_TDS_RFC_INVOICE-ERNAM, sy-vline,
  WA_TDS_RFC_INVOICE-ERNAM_TEXT, sy-vline,
  WA_TDS_RFC_INVOICE-ERDAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TDS_RFC_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_TDS_RFC_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_TDS_RFC_INVOICE INTO WA_TDS_RFC_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 VBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TDS_RFC_INVOICE-VBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TDS_RFC_INVOICE-VBELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AUART, internal->external for field AUART
CALL FUNCTION 'CONVERSION_EXIT_AUART_OUTPUT'
  EXPORTING
    input =                      WA_TDS_RFC_INVOICE-AUART
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TDS_RFC_INVOICE-AUART.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field AUFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TDS_RFC_INVOICE-AUFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TDS_RFC_INVOICE-AUFNR.
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_TDS_RFC_INVOICE_STR, 
VBELN TYPE STRING,
TRVOG TYPE STRING,
VBTYP TYPE STRING,
AUART TYPE STRING,
AUARTT TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
ERNAM TYPE STRING,
ERNAM_TEXT TYPE STRING,
ERDAT TYPE STRING,
ERZET TYPE STRING,
KUNAG TYPE STRING,
KUNAG_ADDRESS TYPE STRING,
BSTKD TYPE STRING,
AUDAT TYPE STRING,
GBSTK TYPE STRING,
RFBSK TYPE STRING,
STATUST TYPE STRING,
AUFNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TDS_RFC_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_TDS_RFC_INVOICE_STR-VBELN sy-vline 
WA_TDS_RFC_INVOICE_STR-TRVOG sy-vline 
WA_TDS_RFC_INVOICE_STR-VBTYP sy-vline 
WA_TDS_RFC_INVOICE_STR-AUART sy-vline 
WA_TDS_RFC_INVOICE_STR-AUARTT sy-vline 
WA_TDS_RFC_INVOICE_STR-VKORG sy-vline 
WA_TDS_RFC_INVOICE_STR-VTWEG sy-vline 
WA_TDS_RFC_INVOICE_STR-SPART sy-vline 
WA_TDS_RFC_INVOICE_STR-ERNAM sy-vline 
WA_TDS_RFC_INVOICE_STR-ERNAM_TEXT sy-vline 
WA_TDS_RFC_INVOICE_STR-ERDAT sy-vline 
WA_TDS_RFC_INVOICE_STR-ERZET sy-vline 
WA_TDS_RFC_INVOICE_STR-KUNAG sy-vline 
WA_TDS_RFC_INVOICE_STR-KUNAG_ADDRESS sy-vline 
WA_TDS_RFC_INVOICE_STR-BSTKD sy-vline 
WA_TDS_RFC_INVOICE_STR-AUDAT sy-vline 
WA_TDS_RFC_INVOICE_STR-GBSTK sy-vline 
WA_TDS_RFC_INVOICE_STR-RFBSK sy-vline 
WA_TDS_RFC_INVOICE_STR-STATUST sy-vline 
WA_TDS_RFC_INVOICE_STR-AUFNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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