ABAP Select data from SAP table RFVIMKDOCKTREE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RFVIMKDOCKTREE
*  INTO TABLE @DATA(IT_RFVIMKDOCKTREE2).
*--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_RFVIMKDOCKTREE INDEX 1 INTO DATA(WA_RFVIMKDOCKTREE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RFVIMKDOCKTREE>-KUNNR = 1.
<RFVIMKDOCKTREE>-BUKRS = 1.
<RFVIMKDOCKTREE>-E_SMIVE = 1.
<RFVIMKDOCKTREE>-SMIVE = 1.
<RFVIMKDOCKTREE>-ANRED = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RFVIMKDOCKTREE-NAME1, sy-vline,
  WA_RFVIMKDOCKTREE-NAME2, sy-vline,
  WA_RFVIMKDOCKTREE-NAME3, sy-vline,
  WA_RFVIMKDOCKTREE-NAME4, sy-vline,
  WA_RFVIMKDOCKTREE-STRAS, sy-vline,
  WA_RFVIMKDOCKTREE-PFACH, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RFVIMKDOCKTREE 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_RFVIMKDOCKTREE 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_RFVIMKDOCKTREE INTO WA_RFVIMKDOCKTREE.


*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_RFVIMKDOCKTREE-KUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFVIMKDOCKTREE-KUNNR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ISOLA, internal->external for field SPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_RFVIMKDOCKTREE-SPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFVIMKDOCKTREE-SPRAS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PARTNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RFVIMKDOCKTREE-PARTNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFVIMKDOCKTREE-PARTNR.
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_RFVIMKDOCKTREE_STR, 
KUNNR TYPE STRING,
BUKRS TYPE STRING,
E_SMIVE TYPE STRING,
SMIVE TYPE STRING,
ANRED TYPE STRING,
NAME1 TYPE STRING,
NAME2 TYPE STRING,
NAME3 TYPE STRING,
NAME4 TYPE STRING,
STRAS TYPE STRING,
PFACH TYPE STRING,
PSTL2 TYPE STRING,
PFORT TYPE STRING,
LAND1 TYPE STRING,
PSTLZ TYPE STRING,
ORT01 TYPE STRING,
ORT02 TYPE STRING,
REGIO TYPE STRING,
SPRAS TYPE STRING,
INLND TYPE STRING,
ANZZL TYPE STRING,
PRIOR TYPE STRING,
WAREN TYPE STRING,
LINE0 TYPE STRING,
LINE1 TYPE STRING,
LINE2 TYPE STRING,
LINE3 TYPE STRING,
LINE4 TYPE STRING,
LINE5 TYPE STRING,
LINE6 TYPE STRING,
LINE7 TYPE STRING,
LINE8 TYPE STRING,
LINE9 TYPE STRING,
LINEK TYPE STRING,
LINED TYPE STRING,
LINED0 TYPE STRING,
PO_BOX_LOBBY TYPE STRING,
DELI_SERV_TYPE TYPE STRING,
DELI_SERV_NUMBER TYPE STRING,
COUNTY TYPE STRING,
TOWNSHIP TYPE STRING,
PARTNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RFVIMKDOCKTREE_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_RFVIMKDOCKTREE_STR-KUNNR sy-vline 
WA_RFVIMKDOCKTREE_STR-BUKRS sy-vline 
WA_RFVIMKDOCKTREE_STR-E_SMIVE sy-vline 
WA_RFVIMKDOCKTREE_STR-SMIVE sy-vline 
WA_RFVIMKDOCKTREE_STR-ANRED sy-vline 
WA_RFVIMKDOCKTREE_STR-NAME1 sy-vline 
WA_RFVIMKDOCKTREE_STR-NAME2 sy-vline 
WA_RFVIMKDOCKTREE_STR-NAME3 sy-vline 
WA_RFVIMKDOCKTREE_STR-NAME4 sy-vline 
WA_RFVIMKDOCKTREE_STR-STRAS sy-vline 
WA_RFVIMKDOCKTREE_STR-PFACH sy-vline 
WA_RFVIMKDOCKTREE_STR-PSTL2 sy-vline 
WA_RFVIMKDOCKTREE_STR-PFORT sy-vline 
WA_RFVIMKDOCKTREE_STR-LAND1 sy-vline 
WA_RFVIMKDOCKTREE_STR-PSTLZ sy-vline 
WA_RFVIMKDOCKTREE_STR-ORT01 sy-vline 
WA_RFVIMKDOCKTREE_STR-ORT02 sy-vline 
WA_RFVIMKDOCKTREE_STR-REGIO sy-vline 
WA_RFVIMKDOCKTREE_STR-SPRAS sy-vline 
WA_RFVIMKDOCKTREE_STR-INLND sy-vline 
WA_RFVIMKDOCKTREE_STR-ANZZL sy-vline 
WA_RFVIMKDOCKTREE_STR-PRIOR sy-vline 
WA_RFVIMKDOCKTREE_STR-WAREN sy-vline 
WA_RFVIMKDOCKTREE_STR-LINE0 sy-vline 
WA_RFVIMKDOCKTREE_STR-LINE1 sy-vline 
WA_RFVIMKDOCKTREE_STR-LINE2 sy-vline 
WA_RFVIMKDOCKTREE_STR-LINE3 sy-vline 
WA_RFVIMKDOCKTREE_STR-LINE4 sy-vline 
WA_RFVIMKDOCKTREE_STR-LINE5 sy-vline 
WA_RFVIMKDOCKTREE_STR-LINE6 sy-vline 
WA_RFVIMKDOCKTREE_STR-LINE7 sy-vline 
WA_RFVIMKDOCKTREE_STR-LINE8 sy-vline 
WA_RFVIMKDOCKTREE_STR-LINE9 sy-vline 
WA_RFVIMKDOCKTREE_STR-LINEK sy-vline 
WA_RFVIMKDOCKTREE_STR-LINED sy-vline 
WA_RFVIMKDOCKTREE_STR-LINED0 sy-vline 
WA_RFVIMKDOCKTREE_STR-PO_BOX_LOBBY sy-vline 
WA_RFVIMKDOCKTREE_STR-DELI_SERV_TYPE sy-vline 
WA_RFVIMKDOCKTREE_STR-DELI_SERV_NUMBER sy-vline 
WA_RFVIMKDOCKTREE_STR-COUNTY sy-vline 
WA_RFVIMKDOCKTREE_STR-TOWNSHIP sy-vline 
WA_RFVIMKDOCKTREE_STR-PARTNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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