ABAP Select data from SAP table FKKINV_BOL into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FKKINV_BOL 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_BOL. 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_BOL 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_BOL TYPE STANDARD TABLE OF FKKINV_BOL,
      WA_FKKINV_BOL TYPE FKKINV_BOL,
      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_BOL> TYPE FKKINV_BOL.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FKKINV_BOL
*  INTO TABLE @DATA(IT_FKKINV_BOL2).
*--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_BOL INDEX 1 INTO DATA(WA_FKKINV_BOL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FKKINV_BOL>-MANDT = 1.
<FKKINV_BOL>-RFRNC = 1.
<FKKINV_BOL>-PRTYP = 1.
<FKKINV_BOL>-BUKRS = 1.
<FKKINV_BOL>-SPART = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FKKINV_BOL-DATUM, sy-vline,
  WA_FKKINV_BOL-WAERS, sy-vline,
  WA_FKKINV_BOL-BASWB, sy-vline,
  WA_FKKINV_BOL-BETWB, sy-vline,
  WA_FKKINV_BOL-BASBL, sy-vline,
  WA_FKKINV_BOL-BETBL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FKKINV_BOL 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_BOL 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_BOL INTO WA_FKKINV_BOL.


*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 OPBEL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FKKINV_BOL-OPBEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FKKINV_BOL-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_FKKINV_BOL_STR, 
MANDT TYPE STRING,
RFRNC TYPE STRING,
PRTYP TYPE STRING,
BUKRS TYPE STRING,
SPART TYPE STRING,
DATUM TYPE STRING,
WAERS TYPE STRING,
BASWB TYPE STRING,
BETWB TYPE STRING,
BASBL TYPE STRING,
BETBL TYPE STRING,
BETRB TYPE STRING,
OPBEL TYPE STRING,
ABDAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FKKINV_BOL_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_BOL_STR-MANDT sy-vline 
WA_FKKINV_BOL_STR-RFRNC sy-vline 
WA_FKKINV_BOL_STR-PRTYP sy-vline 
WA_FKKINV_BOL_STR-BUKRS sy-vline 
WA_FKKINV_BOL_STR-SPART sy-vline 
WA_FKKINV_BOL_STR-DATUM sy-vline 
WA_FKKINV_BOL_STR-WAERS sy-vline 
WA_FKKINV_BOL_STR-BASWB sy-vline 
WA_FKKINV_BOL_STR-BETWB sy-vline 
WA_FKKINV_BOL_STR-BASBL sy-vline 
WA_FKKINV_BOL_STR-BETBL sy-vline 
WA_FKKINV_BOL_STR-BETRB sy-vline 
WA_FKKINV_BOL_STR-OPBEL sy-vline 
WA_FKKINV_BOL_STR-ABDAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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