ABAP Select data from SAP table RECNVICN03 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RECNVICN03 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 RECNVICN03. 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 RECNVICN03 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_RECNVICN03 TYPE STANDARD TABLE OF RECNVICN03,
      WA_RECNVICN03 TYPE RECNVICN03,
      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: <RECNVICN03> TYPE RECNVICN03.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RECNVICN03.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RECNVICN03
  INTO TABLE IT_RECNVICN03.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RECNVICN03
*  INTO TABLE @DATA(IT_RECNVICN032).
*--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_RECNVICN03 INDEX 1 INTO DATA(WA_RECNVICN032).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RECNVICN03 ASSIGNING <RECNVICN03>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RECNVICN03>-MANDT = 1.
<RECNVICN03>-INTRENO = 1.
<RECNVICN03>-DATGVON = 1.
<RECNVICN03>-FOR_OBJNR = 1.
<RECNVICN03>-FOR_SKOART = 1.

ENDLOOP.

LOOP AT IT_RECNVICN03 INTO WA_RECNVICN03.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RECNVICN03-FOR_OBJNR_PARENT, sy-vline,
  WA_RECNVICN03-RECNPERCENT, sy-vline,
  WA_RECNVICN03-EXPAND, sy-vline,
  WA_RECNVICN03-ORIGINAL, sy-vline,
  WA_RECNVICN03-DATGBIS, sy-vline,
  WA_RECNVICN03-RECNAEZIF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RECNVICN03 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_RECNVICN03 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_RECNVICN03 INTO WA_RECNVICN03.


*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_RECNVICN03_STR, 
MANDT TYPE STRING,
INTRENO TYPE STRING,
DATGVON TYPE STRING,
FOR_OBJNR TYPE STRING,
FOR_SKOART TYPE STRING,
FOR_OBJNR_PARENT TYPE STRING,
RECNPERCENT TYPE STRING,
EXPAND TYPE STRING,
ORIGINAL TYPE STRING,
DATGBIS TYPE STRING,
RECNAEZIF TYPE STRING,
XKOARTM TYPE STRING,
OBJECTTXT1 TYPE STRING,
OBJECTTXT2 TYPE STRING,
OBJID TYPE STRING,
OBART TYPE STRING,
OBJECTTYPE TYPE STRING,
RECNPERCENT_CN TYPE STRING,
RECNPERCENT_OBJ TYPE STRING,
RECNAEZIF_CN TYPE STRING,
RECNAEZIF_OBJ TYPE STRING,
KZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RECNVICN03_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_RECNVICN03_STR-MANDT sy-vline 
WA_RECNVICN03_STR-INTRENO sy-vline 
WA_RECNVICN03_STR-DATGVON sy-vline 
WA_RECNVICN03_STR-FOR_OBJNR sy-vline 
WA_RECNVICN03_STR-FOR_SKOART sy-vline 
WA_RECNVICN03_STR-FOR_OBJNR_PARENT sy-vline 
WA_RECNVICN03_STR-RECNPERCENT sy-vline 
WA_RECNVICN03_STR-EXPAND sy-vline 
WA_RECNVICN03_STR-ORIGINAL sy-vline 
WA_RECNVICN03_STR-DATGBIS sy-vline 
WA_RECNVICN03_STR-RECNAEZIF sy-vline 
WA_RECNVICN03_STR-XKOARTM sy-vline 
WA_RECNVICN03_STR-OBJECTTXT1 sy-vline 
WA_RECNVICN03_STR-OBJECTTXT2 sy-vline 
WA_RECNVICN03_STR-OBJID sy-vline 
WA_RECNVICN03_STR-OBART sy-vline 
WA_RECNVICN03_STR-OBJECTTYPE sy-vline 
WA_RECNVICN03_STR-RECNPERCENT_CN sy-vline 
WA_RECNVICN03_STR-RECNPERCENT_OBJ sy-vline 
WA_RECNVICN03_STR-RECNAEZIF_CN sy-vline 
WA_RECNVICN03_STR-RECNAEZIF_OBJ sy-vline 
WA_RECNVICN03_STR-KZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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