ABAP Select data from SAP table RN1VKGTEAMAUF into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RN1VKGTEAMAUF 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 RN1VKGTEAMAUF. 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 RN1VKGTEAMAUF 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_RN1VKGTEAMAUF TYPE STANDARD TABLE OF RN1VKGTEAMAUF,
      WA_RN1VKGTEAMAUF TYPE RN1VKGTEAMAUF,
      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: <RN1VKGTEAMAUF> TYPE RN1VKGTEAMAUF.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_RN1VKGTEAMAUF.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM RN1VKGTEAMAUF
  INTO TABLE IT_RN1VKGTEAMAUF.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RN1VKGTEAMAUF
*  INTO TABLE @DATA(IT_RN1VKGTEAMAUF2).
*--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_RN1VKGTEAMAUF INDEX 1 INTO DATA(WA_RN1VKGTEAMAUF2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_RN1VKGTEAMAUF ASSIGNING <RN1VKGTEAMAUF>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RN1VKGTEAMAUF>-MANDT = 1.
<RN1VKGTEAMAUF>-LNRLS = 1.
<RN1VKGTEAMAUF>-VRGNR = 1.
<RN1VKGTEAMAUF>-VORGANG = 1.
<RN1VKGTEAMAUF>-GPART = 1.

ENDLOOP.

LOOP AT IT_RN1VKGTEAMAUF INTO WA_RN1VKGTEAMAUF.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RN1VKGTEAMAUF-BEGDT, sy-vline,
  WA_RN1VKGTEAMAUF-BEGZT, sy-vline,
  WA_RN1VKGTEAMAUF-ENDDT, sy-vline,
  WA_RN1VKGTEAMAUF-ENDZT, sy-vline,
  WA_RN1VKGTEAMAUF-STATUS, sy-vline,
  WA_RN1VKGTEAMAUF-ZNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RN1VKGTEAMAUF 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_RN1VKGTEAMAUF 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_RN1VKGTEAMAUF INTO WA_RN1VKGTEAMAUF.


*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 LNRLS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN1VKGTEAMAUF-LNRLS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1VKGTEAMAUF-LNRLS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field GPART
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RN1VKGTEAMAUF-GPART
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RN1VKGTEAMAUF-GPART.
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_RN1VKGTEAMAUF_STR, 
MANDT TYPE STRING,
LNRLS TYPE STRING,
VRGNR TYPE STRING,
VORGANG TYPE STRING,
GPART TYPE STRING,
BEGDT TYPE STRING,
BEGZT TYPE STRING,
ENDDT TYPE STRING,
ENDZT TYPE STRING,
STATUS TYPE STRING,
ZNR TYPE STRING,
ERDAT TYPE STRING,
ERUSR TYPE STRING,
UPDAT TYPE STRING,
UPUSR TYPE STRING,
STORN TYPE STRING,
STUSR TYPE STRING,
STDAT TYPE STRING,
NAME1 TYPE STRING,
NAME2 TYPE STRING,
TITEL TYPE STRING,
CAUSECHNG TYPE STRING,
CSECHGID TYPE STRING,
N1AUFTXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RN1VKGTEAMAUF_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_RN1VKGTEAMAUF_STR-MANDT sy-vline 
WA_RN1VKGTEAMAUF_STR-LNRLS sy-vline 
WA_RN1VKGTEAMAUF_STR-VRGNR sy-vline 
WA_RN1VKGTEAMAUF_STR-VORGANG sy-vline 
WA_RN1VKGTEAMAUF_STR-GPART sy-vline 
WA_RN1VKGTEAMAUF_STR-BEGDT sy-vline 
WA_RN1VKGTEAMAUF_STR-BEGZT sy-vline 
WA_RN1VKGTEAMAUF_STR-ENDDT sy-vline 
WA_RN1VKGTEAMAUF_STR-ENDZT sy-vline 
WA_RN1VKGTEAMAUF_STR-STATUS sy-vline 
WA_RN1VKGTEAMAUF_STR-ZNR sy-vline 
WA_RN1VKGTEAMAUF_STR-ERDAT sy-vline 
WA_RN1VKGTEAMAUF_STR-ERUSR sy-vline 
WA_RN1VKGTEAMAUF_STR-UPDAT sy-vline 
WA_RN1VKGTEAMAUF_STR-UPUSR sy-vline 
WA_RN1VKGTEAMAUF_STR-STORN sy-vline 
WA_RN1VKGTEAMAUF_STR-STUSR sy-vline 
WA_RN1VKGTEAMAUF_STR-STDAT sy-vline 
WA_RN1VKGTEAMAUF_STR-NAME1 sy-vline 
WA_RN1VKGTEAMAUF_STR-NAME2 sy-vline 
WA_RN1VKGTEAMAUF_STR-TITEL sy-vline 
WA_RN1VKGTEAMAUF_STR-CAUSECHNG sy-vline 
WA_RN1VKGTEAMAUF_STR-CSECHGID sy-vline 
WA_RN1VKGTEAMAUF_STR-N1AUFTXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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