ABAP Select data from SAP table FACV_UH_FSVCV into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FACV_UH_FSVCV
*  INTO TABLE @DATA(IT_FACV_UH_FSVCV2).
*--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_FACV_UH_FSVCV INDEX 1 INTO DATA(WA_FACV_UH_FSVCV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FACV_UH_FSVCV>-MANDT = 1.
<FACV_UH_FSVCV>-NODEID = 1.
<FACV_UH_FSVCV>-NODETYPE = 1.
<FACV_UH_FSVCV>-NODEVALUE = 1.
<FACV_UH_FSVCV>-CONTRAITEM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FACV_UH_FSVCV-CREDIT, sy-vline,
  WA_FACV_UH_FSVCV-DEBIT, sy-vline,
  WA_FACV_UH_FSVCV-VERSIONID, sy-vline,
  WA_FACV_UH_FSVCV-HIERARCHYID, sy-vline,
  WA_FACV_UH_FSVCV-VERSIONNUMBER, sy-vline,
  WA_FACV_UH_FSVCV-VERSIONMESSAGE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FACV_UH_FSVCV 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_FACV_UH_FSVCV 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_FACV_UH_FSVCV INTO WA_FACV_UH_FSVCV.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_FACV_UH_FSVCV_STR, 
MANDT TYPE STRING,
NODEID TYPE STRING,
NODETYPE TYPE STRING,
NODEVALUE TYPE STRING,
CONTRAITEM TYPE STRING,
CREDIT TYPE STRING,
DEBIT TYPE STRING,
VERSIONID TYPE STRING,
HIERARCHYID TYPE STRING,
VERSIONNUMBER TYPE STRING,
VERSIONMESSAGE TYPE STRING,
VALIDFROM TYPE STRING,
VALIDTO TYPE STRING,
STATUS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FACV_UH_FSVCV_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_FACV_UH_FSVCV_STR-MANDT sy-vline 
WA_FACV_UH_FSVCV_STR-NODEID sy-vline 
WA_FACV_UH_FSVCV_STR-NODETYPE sy-vline 
WA_FACV_UH_FSVCV_STR-NODEVALUE sy-vline 
WA_FACV_UH_FSVCV_STR-CONTRAITEM sy-vline 
WA_FACV_UH_FSVCV_STR-CREDIT sy-vline 
WA_FACV_UH_FSVCV_STR-DEBIT sy-vline 
WA_FACV_UH_FSVCV_STR-VERSIONID sy-vline 
WA_FACV_UH_FSVCV_STR-HIERARCHYID sy-vline 
WA_FACV_UH_FSVCV_STR-VERSIONNUMBER sy-vline 
WA_FACV_UH_FSVCV_STR-VERSIONMESSAGE sy-vline 
WA_FACV_UH_FSVCV_STR-VALIDFROM sy-vline 
WA_FACV_UH_FSVCV_STR-VALIDTO sy-vline 
WA_FACV_UH_FSVCV_STR-STATUS sy-vline      INTO ld_text SEPARATED BY SPACE.

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