ABAP Select data from SAP table V_FKK_INSTPLN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_FKK_INSTPLN
*  INTO TABLE @DATA(IT_V_FKK_INSTPLN2).
*--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_V_FKK_INSTPLN INDEX 1 INTO DATA(WA_V_FKK_INSTPLN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_FKK_INSTPLN>-MANDT = 1.
<V_FKK_INSTPLN>-RPNUM = 1.
<V_FKK_INSTPLN>-RPRCI = 1.
<V_FKK_INSTPLN>-RPRDA = 1.
<V_FKK_INSTPLN>-RPCAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_FKK_INSTPLN-DEADT, sy-vline,
  WA_V_FKK_INSTPLN-DEMAN, sy-vline,
  WA_V_FKK_INSTPLN-DEOFF, sy-vline,
  WA_V_FKK_INSTPLN-WAERS, sy-vline,
  WA_V_FKK_INSTPLN-DEAGD, sy-vline,
  WA_V_FKK_INSTPLN-STTDT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_FKK_INSTPLN 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_V_FKK_INSTPLN 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_V_FKK_INSTPLN INTO WA_V_FKK_INSTPLN.


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

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

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

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

*Conversion exit ALPHA, internal->external for field OPBEL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_V_FKK_INSTPLN-OPBEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_FKK_INSTPLN-OPBEL.
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_V_FKK_INSTPLN_STR, 
MANDT TYPE STRING,
RPNUM TYPE STRING,
RPRCI TYPE STRING,
RPRDA TYPE STRING,
RPCAT TYPE STRING,
DEADT TYPE STRING,
DEMAN TYPE STRING,
DEOFF TYPE STRING,
WAERS TYPE STRING,
DEAGD TYPE STRING,
STTDT TYPE STRING,
ENDDT TYPE STRING,
VKONT TYPE STRING,
GPART TYPE STRING,
VTREF TYPE STRING,
DRCDT TYPE STRING,
BUKRS TYPE STRING,
DPUDT TYPE STRING,
DPUTM TYPE STRING,
OPBEL TYPE STRING,
OPUPK TYPE STRING,
OPUPW TYPE STRING,
OPUPZ TYPE STRING,
BETRO TYPE STRING,
NINST TYPE STRING,
SUBAP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_FKK_INSTPLN_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_V_FKK_INSTPLN_STR-MANDT sy-vline 
WA_V_FKK_INSTPLN_STR-RPNUM sy-vline 
WA_V_FKK_INSTPLN_STR-RPRCI sy-vline 
WA_V_FKK_INSTPLN_STR-RPRDA sy-vline 
WA_V_FKK_INSTPLN_STR-RPCAT sy-vline 
WA_V_FKK_INSTPLN_STR-DEADT sy-vline 
WA_V_FKK_INSTPLN_STR-DEMAN sy-vline 
WA_V_FKK_INSTPLN_STR-DEOFF sy-vline 
WA_V_FKK_INSTPLN_STR-WAERS sy-vline 
WA_V_FKK_INSTPLN_STR-DEAGD sy-vline 
WA_V_FKK_INSTPLN_STR-STTDT sy-vline 
WA_V_FKK_INSTPLN_STR-ENDDT sy-vline 
WA_V_FKK_INSTPLN_STR-VKONT sy-vline 
WA_V_FKK_INSTPLN_STR-GPART sy-vline 
WA_V_FKK_INSTPLN_STR-VTREF sy-vline 
WA_V_FKK_INSTPLN_STR-DRCDT sy-vline 
WA_V_FKK_INSTPLN_STR-BUKRS sy-vline 
WA_V_FKK_INSTPLN_STR-DPUDT sy-vline 
WA_V_FKK_INSTPLN_STR-DPUTM sy-vline 
WA_V_FKK_INSTPLN_STR-OPBEL sy-vline 
WA_V_FKK_INSTPLN_STR-OPUPK sy-vline 
WA_V_FKK_INSTPLN_STR-OPUPW sy-vline 
WA_V_FKK_INSTPLN_STR-OPUPZ sy-vline 
WA_V_FKK_INSTPLN_STR-BETRO sy-vline 
WA_V_FKK_INSTPLN_STR-NINST sy-vline 
WA_V_FKK_INSTPLN_STR-SUBAP sy-vline      INTO ld_text SEPARATED BY SPACE.

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