ABAP Select data from SAP table RECNVIKOKO_DI into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RECNVIKOKO_DI
*  INTO TABLE @DATA(IT_RECNVIKOKO_DI2).
*--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_RECNVIKOKO_DI INDEX 1 INTO DATA(WA_RECNVIKOKO_DI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RECNVIKOKO_DI>-DGUEL_KK = 1.
<RECNVIKOKO_DI>-AMMRHY = 1.
<RECNVIKOKO_DI>-SZAWS = 1.
<RECNVIKOKO_DI>-MWSKZ = 1.
<RECNVIKOKO_DI>-ZLSCH = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RECNVIKOKO_DI-JBMONAT, sy-vline,
  WA_RECNVIKOKO_DI-GZLSCH, sy-vline,
  WA_RECNVIKOKO_DI-SZEITANT, sy-vline,
  WA_RECNVIKOKO_DI-TXJCD, sy-vline,
  WA_RECNVIKOKO_DI-SFKALRI, sy-vline,
  WA_RECNVIKOKO_DI-ATTRHY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RECNVIKOKO_DI 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_RECNVIKOKO_DI 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_RECNVIKOKO_DI INTO WA_RECNVIKOKO_DI.


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

*Conversion exit ALPHA, internal->external for field SPARTNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RECNVIKOKO_DI-SPARTNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RECNVIKOKO_DI-SPARTNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RECNVIKOKO_DI-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RECNVIKOKO_DI-LIFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KOSTL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RECNVIKOKO_DI-KOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RECNVIKOKO_DI-KOSTL.
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_RECNVIKOKO_DI_STR, 
DGUEL_KK TYPE STRING,
AMMRHY TYPE STRING,
SZAWS TYPE STRING,
MWSKZ TYPE STRING,
ZLSCH TYPE STRING,
JBMONAT TYPE STRING,
GZLSCH TYPE STRING,
SZEITANT TYPE STRING,
TXJCD TYPE STRING,
SFKALRI TYPE STRING,
ATTRHY TYPE STRING,
SKOART TYPE STRING,
DGUEL_KP TYPE STRING,
BKOND TYPE STRING,
KUNNR TYPE STRING,
BVTYP TYPE STRING,
MABER TYPE STRING,
SPARTNR TYPE STRING,
SZBMETH TYPE STRING,
DALLGEM TYPE STRING,
SFMETH TYPE STRING,
MANSP TYPE STRING,
ZAHLS TYPE STRING,
BKONDQM TYPE STRING,
JAREA TYPE STRING,
SFLART TYPE STRING,
LIFNR TYPE STRING,
KOSTL TYPE STRING,
JENDEKON TYPE STRING,
RESZBMETH TYPE STRING,
JEINMKON TYPE STRING,
RESZEITANT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RECNVIKOKO_DI_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_RECNVIKOKO_DI_STR-DGUEL_KK sy-vline 
WA_RECNVIKOKO_DI_STR-AMMRHY sy-vline 
WA_RECNVIKOKO_DI_STR-SZAWS sy-vline 
WA_RECNVIKOKO_DI_STR-MWSKZ sy-vline 
WA_RECNVIKOKO_DI_STR-ZLSCH sy-vline 
WA_RECNVIKOKO_DI_STR-JBMONAT sy-vline 
WA_RECNVIKOKO_DI_STR-GZLSCH sy-vline 
WA_RECNVIKOKO_DI_STR-SZEITANT sy-vline 
WA_RECNVIKOKO_DI_STR-TXJCD sy-vline 
WA_RECNVIKOKO_DI_STR-SFKALRI sy-vline 
WA_RECNVIKOKO_DI_STR-ATTRHY sy-vline 
WA_RECNVIKOKO_DI_STR-SKOART sy-vline 
WA_RECNVIKOKO_DI_STR-DGUEL_KP sy-vline 
WA_RECNVIKOKO_DI_STR-BKOND sy-vline 
WA_RECNVIKOKO_DI_STR-KUNNR sy-vline 
WA_RECNVIKOKO_DI_STR-BVTYP sy-vline 
WA_RECNVIKOKO_DI_STR-MABER sy-vline 
WA_RECNVIKOKO_DI_STR-SPARTNR sy-vline 
WA_RECNVIKOKO_DI_STR-SZBMETH sy-vline 
WA_RECNVIKOKO_DI_STR-DALLGEM sy-vline 
WA_RECNVIKOKO_DI_STR-SFMETH sy-vline 
WA_RECNVIKOKO_DI_STR-MANSP sy-vline 
WA_RECNVIKOKO_DI_STR-ZAHLS sy-vline 
WA_RECNVIKOKO_DI_STR-BKONDQM sy-vline 
WA_RECNVIKOKO_DI_STR-JAREA sy-vline 
WA_RECNVIKOKO_DI_STR-SFLART sy-vline 
WA_RECNVIKOKO_DI_STR-LIFNR sy-vline 
WA_RECNVIKOKO_DI_STR-KOSTL sy-vline 
WA_RECNVIKOKO_DI_STR-JENDEKON sy-vline 
WA_RECNVIKOKO_DI_STR-RESZBMETH sy-vline 
WA_RECNVIKOKO_DI_STR-JEINMKON sy-vline 
WA_RECNVIKOKO_DI_STR-RESZEITANT sy-vline      INTO ld_text SEPARATED BY SPACE.

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