ABAP Select data from SAP table KKBW_PCP1 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP KKBW_PCP1 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 KKBW_PCP1. 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 KKBW_PCP1 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_KKBW_PCP1 TYPE STANDARD TABLE OF KKBW_PCP1,
      WA_KKBW_PCP1 TYPE KKBW_PCP1,
      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: <KKBW_PCP1> TYPE KKBW_PCP1.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_KKBW_PCP1.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM KKBW_PCP1
  INTO TABLE IT_KKBW_PCP1.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KKBW_PCP1
*  INTO TABLE @DATA(IT_KKBW_PCP12).
*--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_KKBW_PCP1 INDEX 1 INTO DATA(WA_KKBW_PCP12).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_KKBW_PCP1 ASSIGNING <KKBW_PCP1>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KKBW_PCP1>-BUKRS = 1.
<KKBW_PCP1>-WERKS = 1.
<KKBW_PCP1>-MATNR = 1.
<KKBW_PCP1>-CATEG = 1.
<KKBW_PCP1>-PRTYP = 1.

ENDLOOP.

LOOP AT IT_KKBW_PCP1 INTO WA_KKBW_PCP1.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KKBW_PCP1-KEART, sy-vline,
  WA_KKBW_PCP1-ELEHK, sy-vline,
  WA_KKBW_PCP1-ELEMT, sy-vline,
  WA_KKBW_PCP1-STUFE, sy-vline,
  WA_KKBW_PCP1-KLVAR, sy-vline,
  WA_KKBW_PCP1-TVERS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KKBW_PCP1 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_KKBW_PCP1 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_KKBW_PCP1 INTO WA_KKBW_PCP1.


*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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_KKBW_PCP1-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKBW_PCP1-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_KKBW_PCP1-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KKBW_PCP1-MEINS.
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_KKBW_PCP1_STR, 
BUKRS TYPE STRING,
WERKS TYPE STRING,
MATNR TYPE STRING,
CATEG TYPE STRING,
PRTYP TYPE STRING,
KEART TYPE STRING,
ELEHK TYPE STRING,
ELEMT TYPE STRING,
STUFE TYPE STRING,
KLVAR TYPE STRING,
TVERS TYPE STRING,
ERZKA TYPE STRING,
STATU TYPE STRING,
SICHT TYPE STRING,
CURTP TYPE STRING,
VALTP TYPE STRING,
VALUSUBTYP TYPE STRING,
KADKY TYPE STRING,
WAERS TYPE STRING,
MEINS TYPE STRING,
LOSGR TYPE STRING,
PLMNG TYPE STRING,
WERTF TYPE STRING,
WERTV TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KKBW_PCP1_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_KKBW_PCP1_STR-BUKRS sy-vline 
WA_KKBW_PCP1_STR-WERKS sy-vline 
WA_KKBW_PCP1_STR-MATNR sy-vline 
WA_KKBW_PCP1_STR-CATEG sy-vline 
WA_KKBW_PCP1_STR-PRTYP sy-vline 
WA_KKBW_PCP1_STR-KEART sy-vline 
WA_KKBW_PCP1_STR-ELEHK sy-vline 
WA_KKBW_PCP1_STR-ELEMT sy-vline 
WA_KKBW_PCP1_STR-STUFE sy-vline 
WA_KKBW_PCP1_STR-KLVAR sy-vline 
WA_KKBW_PCP1_STR-TVERS sy-vline 
WA_KKBW_PCP1_STR-ERZKA sy-vline 
WA_KKBW_PCP1_STR-STATU sy-vline 
WA_KKBW_PCP1_STR-SICHT sy-vline 
WA_KKBW_PCP1_STR-CURTP sy-vline 
WA_KKBW_PCP1_STR-VALTP sy-vline 
WA_KKBW_PCP1_STR-VALUSUBTYP sy-vline 
WA_KKBW_PCP1_STR-KADKY sy-vline 
WA_KKBW_PCP1_STR-WAERS sy-vline 
WA_KKBW_PCP1_STR-MEINS sy-vline 
WA_KKBW_PCP1_STR-LOSGR sy-vline 
WA_KKBW_PCP1_STR-PLMNG sy-vline 
WA_KKBW_PCP1_STR-WERTF sy-vline 
WA_KKBW_PCP1_STR-WERTV sy-vline      INTO ld_text SEPARATED BY SPACE.

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