ABAP Select data from SAP table V_O2C_FICA_MYWL into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP V_O2C_FICA_MYWL 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 V_O2C_FICA_MYWL. 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 V_O2C_FICA_MYWL 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_V_O2C_FICA_MYWL TYPE STANDARD TABLE OF V_O2C_FICA_MYWL,
      WA_V_O2C_FICA_MYWL TYPE V_O2C_FICA_MYWL,
      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: <V_O2C_FICA_MYWL> TYPE V_O2C_FICA_MYWL.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_V_O2C_FICA_MYWL.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM V_O2C_FICA_MYWL
  INTO TABLE IT_V_O2C_FICA_MYWL.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_O2C_FICA_MYWL
*  INTO TABLE @DATA(IT_V_O2C_FICA_MYWL2).
*--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_V_O2C_FICA_MYWL INDEX 1 INTO DATA(WA_V_O2C_FICA_MYWL2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_V_O2C_FICA_MYWL ASSIGNING <V_O2C_FICA_MYWL>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_O2C_FICA_MYWL>-MANDT = 1.
<V_O2C_FICA_MYWL>-HIGUID = 1.
<V_O2C_FICA_MYWL>-WLHID = 1.
<V_O2C_FICA_MYWL>-TITLE = 1.
<V_O2C_FICA_MYWL>-TEXT = 1.

ENDLOOP.

LOOP AT IT_V_O2C_FICA_MYWL INTO WA_V_O2C_FICA_MYWL.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_O2C_FICA_MYWL-TILE_ID, sy-vline,
  WA_V_O2C_FICA_MYWL-TILEIDTXT, sy-vline,
  WA_V_O2C_FICA_MYWL-PRIOY, sy-vline,
  WA_V_O2C_FICA_MYWL-PRIORITYTXT, sy-vline,
  WA_V_O2C_FICA_MYWL-DUEDT, sy-vline,
  WA_V_O2C_FICA_MYWL-ACTON, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_O2C_FICA_MYWL 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_V_O2C_FICA_MYWL 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_V_O2C_FICA_MYWL INTO WA_V_O2C_FICA_MYWL.


*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 WLHID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_O2C_FICA_MYWL-WLHID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_O2C_FICA_MYWL-WLHID.
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_V_O2C_FICA_MYWL_STR, 
MANDT TYPE STRING,
HIGUID TYPE STRING,
WLHID TYPE STRING,
TITLE TYPE STRING,
TEXT TYPE STRING,
TILE_ID TYPE STRING,
TILEIDTXT TYPE STRING,
PRIOY TYPE STRING,
PRIORITYTXT TYPE STRING,
DUEDT TYPE STRING,
ACTON TYPE STRING,
ACTIONTXT TYPE STRING,
ERNAM TYPE STRING,
ERDAT TYPE STRING,
WAERS TYPE STRING,
OPEN_AMNT TYPE STRING,
IN_PROCESS_AMNT TYPE STRING,
CLOSED_AMNT TYPE STRING,
OPEN_ITMS TYPE STRING,
IN_PROCESS_ITMS TYPE STRING,
CLOSED_ITMS TYPE STRING,
CLOSED_PRCT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_O2C_FICA_MYWL_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_V_O2C_FICA_MYWL_STR-MANDT sy-vline 
WA_V_O2C_FICA_MYWL_STR-HIGUID sy-vline 
WA_V_O2C_FICA_MYWL_STR-WLHID sy-vline 
WA_V_O2C_FICA_MYWL_STR-TITLE sy-vline 
WA_V_O2C_FICA_MYWL_STR-TEXT sy-vline 
WA_V_O2C_FICA_MYWL_STR-TILE_ID sy-vline 
WA_V_O2C_FICA_MYWL_STR-TILEIDTXT sy-vline 
WA_V_O2C_FICA_MYWL_STR-PRIOY sy-vline 
WA_V_O2C_FICA_MYWL_STR-PRIORITYTXT sy-vline 
WA_V_O2C_FICA_MYWL_STR-DUEDT sy-vline 
WA_V_O2C_FICA_MYWL_STR-ACTON sy-vline 
WA_V_O2C_FICA_MYWL_STR-ACTIONTXT sy-vline 
WA_V_O2C_FICA_MYWL_STR-ERNAM sy-vline 
WA_V_O2C_FICA_MYWL_STR-ERDAT sy-vline 
WA_V_O2C_FICA_MYWL_STR-WAERS sy-vline 
WA_V_O2C_FICA_MYWL_STR-OPEN_AMNT sy-vline 
WA_V_O2C_FICA_MYWL_STR-IN_PROCESS_AMNT sy-vline 
WA_V_O2C_FICA_MYWL_STR-CLOSED_AMNT sy-vline 
WA_V_O2C_FICA_MYWL_STR-OPEN_ITMS sy-vline 
WA_V_O2C_FICA_MYWL_STR-IN_PROCESS_ITMS sy-vline 
WA_V_O2C_FICA_MYWL_STR-CLOSED_ITMS sy-vline 
WA_V_O2C_FICA_MYWL_STR-CLOSED_PRCT sy-vline      INTO ld_text SEPARATED BY SPACE.

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