ABAP Select data from SAP table RFDKLI_VZG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RFDKLI_VZG
*  INTO TABLE @DATA(IT_RFDKLI_VZG2).
*--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_RFDKLI_VZG INDEX 1 INTO DATA(WA_RFDKLI_VZG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RFDKLI_VZG>-KUNNR = 1.
<RFDKLI_VZG>-BUKRS = 1.
<RFDKLI_VZG>-WAERS = 1.
<RFDKLI_VZG>-SFAE1 = 1.
<RFDKLI_VZG>-SFAE2 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RFDKLI_VZG-SFAE3, sy-vline,
  WA_RFDKLI_VZG-SFAE4, sy-vline,
  WA_RFDKLI_VZG-SFAE5, sy-vline,
  WA_RFDKLI_VZG-SFAE6, sy-vline,
  WA_RFDKLI_VZG-SFAEL, sy-vline,
  WA_RFDKLI_VZG-SNFA1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RFDKLI_VZG 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_RFDKLI_VZG 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_RFDKLI_VZG INTO WA_RFDKLI_VZG.


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

*Conversion exit AC152, internal->external for field SFAE1
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_RFDKLI_VZG-SFAE1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFDKLI_VZG-SFAE1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field SFAE2
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_RFDKLI_VZG-SFAE2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFDKLI_VZG-SFAE2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field SFAE3
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_RFDKLI_VZG-SFAE3
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFDKLI_VZG-SFAE3.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field SFAE4
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_RFDKLI_VZG-SFAE4
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFDKLI_VZG-SFAE4.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field SFAE5
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_RFDKLI_VZG-SFAE5
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFDKLI_VZG-SFAE5.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field SFAE6
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_RFDKLI_VZG-SFAE6
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFDKLI_VZG-SFAE6.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field SFAEL
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_RFDKLI_VZG-SFAEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFDKLI_VZG-SFAEL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field SNFA1
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_RFDKLI_VZG-SNFA1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFDKLI_VZG-SNFA1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field SNFA2
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_RFDKLI_VZG-SNFA2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFDKLI_VZG-SNFA2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field SNFA3
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_RFDKLI_VZG-SNFA3
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFDKLI_VZG-SNFA3.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field SNFA4
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_RFDKLI_VZG-SNFA4
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFDKLI_VZG-SNFA4.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field SNFA5
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_RFDKLI_VZG-SNFA5
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFDKLI_VZG-SNFA5.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field SNFA6
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_RFDKLI_VZG-SNFA6
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFDKLI_VZG-SNFA6.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field SNFAE
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_RFDKLI_VZG-SNFAE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RFDKLI_VZG-SNFAE.
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_RFDKLI_VZG_STR, 
KUNNR TYPE STRING,
BUKRS TYPE STRING,
WAERS TYPE STRING,
SFAE1 TYPE STRING,
SFAE2 TYPE STRING,
SFAE3 TYPE STRING,
SFAE4 TYPE STRING,
SFAE5 TYPE STRING,
SFAE6 TYPE STRING,
SFAEL TYPE STRING,
SNFA1 TYPE STRING,
SNFA2 TYPE STRING,
SNFA3 TYPE STRING,
SNFA4 TYPE STRING,
SNFA5 TYPE STRING,
SNFA6 TYPE STRING,
SNFAE TYPE STRING,
RAST1 TYPE STRING,
RAST2 TYPE STRING,
RAST3 TYPE STRING,
RAST4 TYPE STRING,
RAST5 TYPE STRING,
RAST6 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RFDKLI_VZG_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_RFDKLI_VZG_STR-KUNNR sy-vline 
WA_RFDKLI_VZG_STR-BUKRS sy-vline 
WA_RFDKLI_VZG_STR-WAERS sy-vline 
WA_RFDKLI_VZG_STR-SFAE1 sy-vline 
WA_RFDKLI_VZG_STR-SFAE2 sy-vline 
WA_RFDKLI_VZG_STR-SFAE3 sy-vline 
WA_RFDKLI_VZG_STR-SFAE4 sy-vline 
WA_RFDKLI_VZG_STR-SFAE5 sy-vline 
WA_RFDKLI_VZG_STR-SFAE6 sy-vline 
WA_RFDKLI_VZG_STR-SFAEL sy-vline 
WA_RFDKLI_VZG_STR-SNFA1 sy-vline 
WA_RFDKLI_VZG_STR-SNFA2 sy-vline 
WA_RFDKLI_VZG_STR-SNFA3 sy-vline 
WA_RFDKLI_VZG_STR-SNFA4 sy-vline 
WA_RFDKLI_VZG_STR-SNFA5 sy-vline 
WA_RFDKLI_VZG_STR-SNFA6 sy-vline 
WA_RFDKLI_VZG_STR-SNFAE sy-vline 
WA_RFDKLI_VZG_STR-RAST1 sy-vline 
WA_RFDKLI_VZG_STR-RAST2 sy-vline 
WA_RFDKLI_VZG_STR-RAST3 sy-vline 
WA_RFDKLI_VZG_STR-RAST4 sy-vline 
WA_RFDKLI_VZG_STR-RAST5 sy-vline 
WA_RFDKLI_VZG_STR-RAST6 sy-vline      INTO ld_text SEPARATED BY SPACE.

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