ABAP Select data from SAP table SINV_WFL_VH into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SINV_WFL_VH
*  INTO TABLE @DATA(IT_SINV_WFL_VH2).
*--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_SINV_WFL_VH INDEX 1 INTO DATA(WA_SINV_WFL_VH2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SINV_WFL_VH>-MANDT = 1.
<SINV_WFL_VH>-MMPURWORKFLOW = 1.
<SINV_WFL_VH>-COMPANYCODE = 1.
<SINV_WFL_VH>-COSTCENTER = 1.
<SINV_WFL_VH>-WBSELEMENT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SINV_WFL_VH-CURRENCY, sy-vline,
  WA_SINV_WFL_VH-INVOICEUSER, sy-vline,
  WA_SINV_WFL_VH-DEBITCREDITCODE, sy-vline,
  WA_SINV_WFL_VH-SUPPLIERRELEASEGROUP, sy-vline,
  WA_SINV_WFL_VH-VALIDITYDATE, sy-vline,
  WA_SINV_WFL_VH-CONTROLLINGAREA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SINV_WFL_VH 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_SINV_WFL_VH 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_SINV_WFL_VH INTO WA_SINV_WFL_VH.


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

*Conversion exit ABPSP, internal->external for field WBSELEMENT
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_SINV_WFL_VH-WBSELEMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SINV_WFL_VH-WBSELEMENT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field LANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_SINV_WFL_VH-LANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SINV_WFL_VH-LANGUAGE.
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_SINV_WFL_VH_STR, 
MANDT TYPE STRING,
MMPURWORKFLOW TYPE STRING,
COMPANYCODE TYPE STRING,
COSTCENTER TYPE STRING,
WBSELEMENT TYPE STRING,
CURRENCY TYPE STRING,
INVOICEUSER TYPE STRING,
DEBITCREDITCODE TYPE STRING,
SUPPLIERRELEASEGROUP TYPE STRING,
VALIDITYDATE TYPE STRING,
CONTROLLINGAREA TYPE STRING,
LANGUAGE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SINV_WFL_VH_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_SINV_WFL_VH_STR-MANDT sy-vline 
WA_SINV_WFL_VH_STR-MMPURWORKFLOW sy-vline 
WA_SINV_WFL_VH_STR-COMPANYCODE sy-vline 
WA_SINV_WFL_VH_STR-COSTCENTER sy-vline 
WA_SINV_WFL_VH_STR-WBSELEMENT sy-vline 
WA_SINV_WFL_VH_STR-CURRENCY sy-vline 
WA_SINV_WFL_VH_STR-INVOICEUSER sy-vline 
WA_SINV_WFL_VH_STR-DEBITCREDITCODE sy-vline 
WA_SINV_WFL_VH_STR-SUPPLIERRELEASEGROUP sy-vline 
WA_SINV_WFL_VH_STR-VALIDITYDATE sy-vline 
WA_SINV_WFL_VH_STR-CONTROLLINGAREA sy-vline 
WA_SINV_WFL_VH_STR-LANGUAGE sy-vline      INTO ld_text SEPARATED BY SPACE.

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