ABAP Select data from SAP table FKKINV_REVT_DISP_0202 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FKKINV_REVT_DISP_0202 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 FKKINV_REVT_DISP_0202. 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 FKKINV_REVT_DISP_0202 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_FKKINV_REVT_DISP_0202 TYPE STANDARD TABLE OF FKKINV_REVT_DISP_0202,
      WA_FKKINV_REVT_DISP_0202 TYPE FKKINV_REVT_DISP_0202,
      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: <FKKINV_REVT_DISP_0202> TYPE FKKINV_REVT_DISP_0202.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_FKKINV_REVT_DISP_0202.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM FKKINV_REVT_DISP_0202
  INTO TABLE IT_FKKINV_REVT_DISP_0202.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKKINV_REVT_DISP_0202
*  INTO TABLE @DATA(IT_FKKINV_REVT_DISP_02022).
*--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_FKKINV_REVT_DISP_0202 INDEX 1 INTO DATA(WA_FKKINV_REVT_DISP_02022).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_FKKINV_REVT_DISP_0202 ASSIGNING <FKKINV_REVT_DISP_0202>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKKINV_REVT_DISP_0202>-MANDT = 1.
<FKKINV_REVT_DISP_0202>-REVTASK = 1.
<FKKINV_REVT_DISP_0202>-REVTASK_DESC = 1.
<FKKINV_REVT_DISP_0202>-REVTASK_REF = 1.
<FKKINV_REVT_DISP_0202>-CRNAME = 1.

ENDLOOP.

LOOP AT IT_FKKINV_REVT_DISP_0202 INTO WA_FKKINV_REVT_DISP_0202.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKKINV_REVT_DISP_0202-CRDATE, sy-vline,
  WA_FKKINV_REVT_DISP_0202-CRTIME, sy-vline,
  WA_FKKINV_REVT_DISP_0202-CHNAME, sy-vline,
  WA_FKKINV_REVT_DISP_0202-CHDATE, sy-vline,
  WA_FKKINV_REVT_DISP_0202-CHTIME, sy-vline,
  WA_FKKINV_REVT_DISP_0202-REVSTATUS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKKINV_REVT_DISP_0202 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_FKKINV_REVT_DISP_0202 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_FKKINV_REVT_DISP_0202 INTO WA_FKKINV_REVT_DISP_0202.


*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_FKKINV_REVT_DISP_0202_STR, 
MANDT TYPE STRING,
REVTASK TYPE STRING,
REVTASK_DESC TYPE STRING,
REVTASK_REF TYPE STRING,
CRNAME TYPE STRING,
CRDATE TYPE STRING,
CRTIME TYPE STRING,
CHNAME TYPE STRING,
CHDATE TYPE STRING,
CHTIME TYPE STRING,
REVSTATUS TYPE STRING,
XREVLOCKED TYPE STRING,
LOEDT TYPE STRING,
XCREATE_REV_BIT TYPE STRING,
XCREATE_REV_BILL TYPE STRING,
XCREATE_REV_INV TYPE STRING,
XCREATE_REV_RERATE TYPE STRING,
REVSTATUS_ICON TYPE STRING,
XREVLOCKED_ICON TYPE STRING,
BILL_REVREASON TYPE STRING,
INV_REVREASON TYPE STRING,
STODT TYPE STRING,
RERFRDATE_ORIG TYPE STRING,
RERFRDATE_ADAPT TYPE STRING,
EXCREASON TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKKINV_REVT_DISP_0202_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_FKKINV_REVT_DISP_0202_STR-MANDT sy-vline 
WA_FKKINV_REVT_DISP_0202_STR-REVTASK sy-vline 
WA_FKKINV_REVT_DISP_0202_STR-REVTASK_DESC sy-vline 
WA_FKKINV_REVT_DISP_0202_STR-REVTASK_REF sy-vline 
WA_FKKINV_REVT_DISP_0202_STR-CRNAME sy-vline 
WA_FKKINV_REVT_DISP_0202_STR-CRDATE sy-vline 
WA_FKKINV_REVT_DISP_0202_STR-CRTIME sy-vline 
WA_FKKINV_REVT_DISP_0202_STR-CHNAME sy-vline 
WA_FKKINV_REVT_DISP_0202_STR-CHDATE sy-vline 
WA_FKKINV_REVT_DISP_0202_STR-CHTIME sy-vline 
WA_FKKINV_REVT_DISP_0202_STR-REVSTATUS sy-vline 
WA_FKKINV_REVT_DISP_0202_STR-XREVLOCKED sy-vline 
WA_FKKINV_REVT_DISP_0202_STR-LOEDT sy-vline 
WA_FKKINV_REVT_DISP_0202_STR-XCREATE_REV_BIT sy-vline 
WA_FKKINV_REVT_DISP_0202_STR-XCREATE_REV_BILL sy-vline 
WA_FKKINV_REVT_DISP_0202_STR-XCREATE_REV_INV sy-vline 
WA_FKKINV_REVT_DISP_0202_STR-XCREATE_REV_RERATE sy-vline 
WA_FKKINV_REVT_DISP_0202_STR-REVSTATUS_ICON sy-vline 
WA_FKKINV_REVT_DISP_0202_STR-XREVLOCKED_ICON sy-vline 
WA_FKKINV_REVT_DISP_0202_STR-BILL_REVREASON sy-vline 
WA_FKKINV_REVT_DISP_0202_STR-INV_REVREASON sy-vline 
WA_FKKINV_REVT_DISP_0202_STR-STODT sy-vline 
WA_FKKINV_REVT_DISP_0202_STR-RERFRDATE_ORIG sy-vline 
WA_FKKINV_REVT_DISP_0202_STR-RERFRDATE_ADAPT sy-vline 
WA_FKKINV_REVT_DISP_0202_STR-EXCREASON sy-vline      INTO ld_text SEPARATED BY SPACE.

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