ABAP Select data from SAP table FACV_DFT_WLI into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FACV_DFT_WLI 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_DFT_WLI. 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_DFT_WLI 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_DFT_WLI TYPE STANDARD TABLE OF FACV_DFT_WLI,
      WA_FACV_DFT_WLI TYPE FACV_DFT_WLI,
      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_DFT_WLI> TYPE FACV_DFT_WLI.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FACV_DFT_WLI
*  INTO TABLE @DATA(IT_FACV_DFT_WLI2).
*--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_DFT_WLI INDEX 1 INTO DATA(WA_FACV_DFT_WLI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FACV_DFT_WLI>-MANDT = 1.
<FACV_DFT_WLI>-HOLDDOCUMENTKEY = 1.
<FACV_DFT_WLI>-PARENTDRAFTKEY = 1.
<FACV_DFT_WLI>-CREATEDBYUSER = 1.
<FACV_DFT_WLI>-TEMPORARYID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FACV_DFT_WLI-TRANSACTIONCODE, sy-vline,
  WA_FACV_DFT_WLI-TRANSACTIONCODENAME, sy-vline,
  WA_FACV_DFT_WLI-COMPANYCODE, sy-vline,
  WA_FACV_DFT_WLI-POSTINGDATE, sy-vline,
  WA_FACV_DFT_WLI-CREATIONDATETIME, sy-vline,
  WA_FACV_DFT_WLI-REVERSALREASON, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FACV_DFT_WLI 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_DFT_WLI 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_DFT_WLI INTO WA_FACV_DFT_WLI.


*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_DFT_WLI_STR, 
MANDT TYPE STRING,
HOLDDOCUMENTKEY TYPE STRING,
PARENTDRAFTKEY TYPE STRING,
CREATEDBYUSER TYPE STRING,
TEMPORARYID TYPE STRING,
TRANSACTIONCODE TYPE STRING,
TRANSACTIONCODENAME TYPE STRING,
COMPANYCODE TYPE STRING,
POSTINGDATE TYPE STRING,
CREATIONDATETIME TYPE STRING,
REVERSALREASON TYPE STRING,
REVERSALREASONNAME TYPE STRING,
PLANNEDREVERSALDATE TYPE STRING,
OBJECTISLOCKED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FACV_DFT_WLI_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_DFT_WLI_STR-MANDT sy-vline 
WA_FACV_DFT_WLI_STR-HOLDDOCUMENTKEY sy-vline 
WA_FACV_DFT_WLI_STR-PARENTDRAFTKEY sy-vline 
WA_FACV_DFT_WLI_STR-CREATEDBYUSER sy-vline 
WA_FACV_DFT_WLI_STR-TEMPORARYID sy-vline 
WA_FACV_DFT_WLI_STR-TRANSACTIONCODE sy-vline 
WA_FACV_DFT_WLI_STR-TRANSACTIONCODENAME sy-vline 
WA_FACV_DFT_WLI_STR-COMPANYCODE sy-vline 
WA_FACV_DFT_WLI_STR-POSTINGDATE sy-vline 
WA_FACV_DFT_WLI_STR-CREATIONDATETIME sy-vline 
WA_FACV_DFT_WLI_STR-REVERSALREASON sy-vline 
WA_FACV_DFT_WLI_STR-REVERSALREASONNAME sy-vline 
WA_FACV_DFT_WLI_STR-PLANNEDREVERSALDATE sy-vline 
WA_FACV_DFT_WLI_STR-OBJECTISLOCKED sy-vline      INTO ld_text SEPARATED BY SPACE.

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