ABAP Select data from SAP table VISCCOSTSEXT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VISCCOSTSEXT
*  INTO TABLE @DATA(IT_VISCCOSTSEXT2).
*--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_VISCCOSTSEXT INDEX 1 INTO DATA(WA_VISCCOSTSEXT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VISCCOSTSEXT>-MANDT = 1.
<VISCCOSTSEXT>-COSTSEXTGUID = 1.
<VISCCOSTSEXT>-SUOBJNR = 1.
<VISCCOSTSEXT>-ROOBJNR = 1.
<VISCCOSTSEXT>-CNOBJNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VISCCOSTSEXT-COSTACCOUNT, sy-vline,
  WA_VISCCOSTSEXT-TAXACCOUNT, sy-vline,
  WA_VISCCOSTSEXT-TAXTYPE, sy-vline,
  WA_VISCCOSTSEXT-TAXGROUP, sy-vline,
  WA_VISCCOSTSEXT-TAXDATE, sy-vline,
  WA_VISCCOSTSEXT-PFROM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VISCCOSTSEXT 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_VISCCOSTSEXT 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_VISCCOSTSEXT INTO WA_VISCCOSTSEXT.


*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 REDAT, internal->external for field PTO
CALL FUNCTION 'CONVERSION_EXIT_REDAT_OUTPUT'
  EXPORTING
    input =                      WA_VISCCOSTSEXT-PTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VISCCOSTSEXT-PTO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LOGSYSTEM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VISCCOSTSEXT-LOGSYSTEM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VISCCOSTSEXT-LOGSYSTEM.
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_VISCCOSTSEXT_STR, 
MANDT TYPE STRING,
COSTSEXTGUID TYPE STRING,
SUOBJNR TYPE STRING,
ROOBJNR TYPE STRING,
CNOBJNR TYPE STRING,
COSTACCOUNT TYPE STRING,
TAXACCOUNT TYPE STRING,
TAXTYPE TYPE STRING,
TAXGROUP TYPE STRING,
TAXDATE TYPE STRING,
PFROM TYPE STRING,
PTO TYPE STRING,
LOGSYSTEM TYPE STRING,
REFDOCTYPE TYPE STRING,
REFDOCID TYPE STRING,
REFITEMNO TYPE STRING,
HASCOPOSTING TYPE STRING,
CURRENCY TYPE STRING,
NET_AMOUNT TYPE STRING,
TAX_AMOUNT TYPE STRING,
DEDUCT_TAX TYPE STRING,
NONDEDUCT_TAX TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VISCCOSTSEXT_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_VISCCOSTSEXT_STR-MANDT sy-vline 
WA_VISCCOSTSEXT_STR-COSTSEXTGUID sy-vline 
WA_VISCCOSTSEXT_STR-SUOBJNR sy-vline 
WA_VISCCOSTSEXT_STR-ROOBJNR sy-vline 
WA_VISCCOSTSEXT_STR-CNOBJNR sy-vline 
WA_VISCCOSTSEXT_STR-COSTACCOUNT sy-vline 
WA_VISCCOSTSEXT_STR-TAXACCOUNT sy-vline 
WA_VISCCOSTSEXT_STR-TAXTYPE sy-vline 
WA_VISCCOSTSEXT_STR-TAXGROUP sy-vline 
WA_VISCCOSTSEXT_STR-TAXDATE sy-vline 
WA_VISCCOSTSEXT_STR-PFROM sy-vline 
WA_VISCCOSTSEXT_STR-PTO sy-vline 
WA_VISCCOSTSEXT_STR-LOGSYSTEM sy-vline 
WA_VISCCOSTSEXT_STR-REFDOCTYPE sy-vline 
WA_VISCCOSTSEXT_STR-REFDOCID sy-vline 
WA_VISCCOSTSEXT_STR-REFITEMNO sy-vline 
WA_VISCCOSTSEXT_STR-HASCOPOSTING sy-vline 
WA_VISCCOSTSEXT_STR-CURRENCY sy-vline 
WA_VISCCOSTSEXT_STR-NET_AMOUNT sy-vline 
WA_VISCCOSTSEXT_STR-TAX_AMOUNT sy-vline 
WA_VISCCOSTSEXT_STR-DEDUCT_TAX sy-vline 
WA_VISCCOSTSEXT_STR-NONDEDUCT_TAX sy-vline      INTO ld_text SEPARATED BY SPACE.

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