ABAP Select data from SAP table FKKINV_PC into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKKINV_PC
*  INTO TABLE @DATA(IT_FKKINV_PC2).
*--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_FKKINV_PC INDEX 1 INTO DATA(WA_FKKINV_PC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKKINV_PC>-VT_H = 1.
<FKKINV_PC>-MANDT = 1.
<FKKINV_PC>-VTKEY = 1.
<FKKINV_PC>-GPART = 1.
<FKKINV_PC>-ERDAT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKKINV_PC-ERTIM, sy-vline,
  WA_FKKINV_PC-ERNAM, sy-vline,
  WA_FKKINV_PC-LOEVM, sy-vline,
  WA_FKKINV_PC-AEDAT, sy-vline,
  WA_FKKINV_PC-AETIM, sy-vline,
  WA_FKKINV_PC-AENAM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKKINV_PC 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_FKKINV_PC 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_FKKINV_PC INTO WA_FKKINV_PC.


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

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

*Conversion exit ALPHA, internal->external for field VTALT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKKINV_PC-VTALT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKINV_PC-VTALT.
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_FKKINV_PC_STR, 
VT_H TYPE STRING,
MANDT TYPE STRING,
VTKEY TYPE STRING,
GPART TYPE STRING,
ERDAT TYPE STRING,
ERTIM TYPE STRING,
ERNAM TYPE STRING,
LOEVM TYPE STRING,
AEDAT TYPE STRING,
AETIM TYPE STRING,
AENAM TYPE STRING,
VTBEZ TYPE STRING,
VTALT TYPE STRING,
VTBEG TYPE STRING,
VTBEG_LOCL TYPE STRING,
VTEND TYPE STRING,
VTEND_LOCL TYPE STRING,
BEGRU TYPE STRING,
BUKRS TYPE STRING,
TZONE TYPE STRING,
VTCAT TYPE STRING,
MIGST TYPE STRING,
VTCHR TYPE STRING,
STATU TYPE STRING,
ASUAC TYPE STRING,
SENDER TYPE STRING,
VTVRS TYPE STRING,
VT_I_TAB TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKKINV_PC_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_FKKINV_PC_STR-VT_H sy-vline 
WA_FKKINV_PC_STR-MANDT sy-vline 
WA_FKKINV_PC_STR-VTKEY sy-vline 
WA_FKKINV_PC_STR-GPART sy-vline 
WA_FKKINV_PC_STR-ERDAT sy-vline 
WA_FKKINV_PC_STR-ERTIM sy-vline 
WA_FKKINV_PC_STR-ERNAM sy-vline 
WA_FKKINV_PC_STR-LOEVM sy-vline 
WA_FKKINV_PC_STR-AEDAT sy-vline 
WA_FKKINV_PC_STR-AETIM sy-vline 
WA_FKKINV_PC_STR-AENAM sy-vline 
WA_FKKINV_PC_STR-VTBEZ sy-vline 
WA_FKKINV_PC_STR-VTALT sy-vline 
WA_FKKINV_PC_STR-VTBEG sy-vline 
WA_FKKINV_PC_STR-VTBEG_LOCL sy-vline 
WA_FKKINV_PC_STR-VTEND sy-vline 
WA_FKKINV_PC_STR-VTEND_LOCL sy-vline 
WA_FKKINV_PC_STR-BEGRU sy-vline 
WA_FKKINV_PC_STR-BUKRS sy-vline 
WA_FKKINV_PC_STR-TZONE sy-vline 
WA_FKKINV_PC_STR-VTCAT sy-vline 
WA_FKKINV_PC_STR-MIGST sy-vline 
WA_FKKINV_PC_STR-VTCHR sy-vline 
WA_FKKINV_PC_STR-STATU sy-vline 
WA_FKKINV_PC_STR-ASUAC sy-vline 
WA_FKKINV_PC_STR-SENDER sy-vline 
WA_FKKINV_PC_STR-VTVRS sy-vline 
WA_FKKINV_PC_STR-VT_I_TAB sy-vline      INTO ld_text SEPARATED BY SPACE.

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