ABAP Select data from SAP table PKW_HKWPGSI0_DATA into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PKW_HKWPGSI0_DATA 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 PKW_HKWPGSI0_DATA. 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 PKW_HKWPGSI0_DATA 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_PKW_HKWPGSI0_DATA TYPE STANDARD TABLE OF PKW_HKWPGSI0_DATA,
      WA_PKW_HKWPGSI0_DATA TYPE PKW_HKWPGSI0_DATA,
      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: <PKW_HKWPGSI0_DATA> TYPE PKW_HKWPGSI0_DATA.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PKW_HKWPGSI0_DATA.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PKW_HKWPGSI0_DATA
  INTO TABLE IT_PKW_HKWPGSI0_DATA.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PKW_HKWPGSI0_DATA
*  INTO TABLE @DATA(IT_PKW_HKWPGSI0_DATA2).
*--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_PKW_HKWPGSI0_DATA INDEX 1 INTO DATA(WA_PKW_HKWPGSI0_DATA2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PKW_HKWPGSI0_DATA ASSIGNING <PKW_HKWPGSI0_DATA>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PKW_HKWPGSI0_DATA>-PABRJ = 1.
<PKW_HKWPGSI0_DATA>-PABRP = 1.
<PKW_HKWPGSI0_DATA>-SPONN = 1.
<PKW_HKWPGSI0_DATA>-CRNUM = 1.
<PKW_HKWPGSI0_DATA>-TOSAL = 1.

ENDLOOP.

LOOP AT IT_PKW_HKWPGSI0_DATA INTO WA_PKW_HKWPGSI0_DATA.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PKW_HKWPGSI0_DATA-TOSAH, sy-vline,
  WA_PKW_HKWPGSI0_DATA-EEBCO, sy-vline,
  WA_PKW_HKWPGSI0_DATA-ERBCO, sy-vline,
  WA_PKW_HKWPGSI0_DATA-TOBCO, sy-vline,
  WA_PKW_HKWPGSI0_DATA-REEBC, sy-vline,
  WA_PKW_HKWPGSI0_DATA-RERBC, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PKW_HKWPGSI0_DATA 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_PKW_HKWPGSI0_DATA 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_PKW_HKWPGSI0_DATA INTO WA_PKW_HKWPGSI0_DATA.


*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 GJAHR, internal->external for field PABRJ
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_PKW_HKWPGSI0_DATA-PABRJ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PKW_HKWPGSI0_DATA-PABRJ.
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_PKW_HKWPGSI0_DATA_STR, 
PABRJ TYPE STRING,
PABRP TYPE STRING,
SPONN TYPE STRING,
CRNUM TYPE STRING,
TOSAL TYPE STRING,
TOSAH TYPE STRING,
EEBCO TYPE STRING,
ERBCO TYPE STRING,
TOBCO TYPE STRING,
REEBC TYPE STRING,
RERBC TYPE STRING,
RTOBC TYPE STRING,
EECCO TYPE STRING,
ERCCO TYPE STRING,
TOCCO TYPE STRING,
REECC TYPE STRING,
RERCC TYPE STRING,
RTOCC TYPE STRING,
EERCO TYPE STRING,
ERRCO TYPE STRING,
TORCO TYPE STRING,
REERC TYPE STRING,
RERRC TYPE STRING,
RTORC TYPE STRING,
EEUCO TYPE STRING,
ERUCO TYPE STRING,
TOUCO TYPE STRING,
REEUC TYPE STRING,
RERUC TYPE STRING,
RTOUC TYPE STRING,
TOTAL TYPE STRING,
BANKN TYPE STRING,
RUNDA TYPE STRING,
WAERS TYPE STRING,
EESRF TYPE STRING,
RESRF TYPE STRING,
PRIAM TYPE STRING,
RPRIA TYPE STRING,
PSICN TYPE STRING,
ARMNTH TYPE STRING,
RPNAM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PKW_HKWPGSI0_DATA_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_PKW_HKWPGSI0_DATA_STR-PABRJ sy-vline 
WA_PKW_HKWPGSI0_DATA_STR-PABRP sy-vline 
WA_PKW_HKWPGSI0_DATA_STR-SPONN sy-vline 
WA_PKW_HKWPGSI0_DATA_STR-CRNUM sy-vline 
WA_PKW_HKWPGSI0_DATA_STR-TOSAL sy-vline 
WA_PKW_HKWPGSI0_DATA_STR-TOSAH sy-vline 
WA_PKW_HKWPGSI0_DATA_STR-EEBCO sy-vline 
WA_PKW_HKWPGSI0_DATA_STR-ERBCO sy-vline 
WA_PKW_HKWPGSI0_DATA_STR-TOBCO sy-vline 
WA_PKW_HKWPGSI0_DATA_STR-REEBC sy-vline 
WA_PKW_HKWPGSI0_DATA_STR-RERBC sy-vline 
WA_PKW_HKWPGSI0_DATA_STR-RTOBC sy-vline 
WA_PKW_HKWPGSI0_DATA_STR-EECCO sy-vline 
WA_PKW_HKWPGSI0_DATA_STR-ERCCO sy-vline 
WA_PKW_HKWPGSI0_DATA_STR-TOCCO sy-vline 
WA_PKW_HKWPGSI0_DATA_STR-REECC sy-vline 
WA_PKW_HKWPGSI0_DATA_STR-RERCC sy-vline 
WA_PKW_HKWPGSI0_DATA_STR-RTOCC sy-vline 
WA_PKW_HKWPGSI0_DATA_STR-EERCO sy-vline 
WA_PKW_HKWPGSI0_DATA_STR-ERRCO sy-vline 
WA_PKW_HKWPGSI0_DATA_STR-TORCO sy-vline 
WA_PKW_HKWPGSI0_DATA_STR-REERC sy-vline 
WA_PKW_HKWPGSI0_DATA_STR-RERRC sy-vline 
WA_PKW_HKWPGSI0_DATA_STR-RTORC sy-vline 
WA_PKW_HKWPGSI0_DATA_STR-EEUCO sy-vline 
WA_PKW_HKWPGSI0_DATA_STR-ERUCO sy-vline 
WA_PKW_HKWPGSI0_DATA_STR-TOUCO sy-vline 
WA_PKW_HKWPGSI0_DATA_STR-REEUC sy-vline 
WA_PKW_HKWPGSI0_DATA_STR-RERUC sy-vline 
WA_PKW_HKWPGSI0_DATA_STR-RTOUC sy-vline 
WA_PKW_HKWPGSI0_DATA_STR-TOTAL sy-vline 
WA_PKW_HKWPGSI0_DATA_STR-BANKN sy-vline 
WA_PKW_HKWPGSI0_DATA_STR-RUNDA sy-vline 
WA_PKW_HKWPGSI0_DATA_STR-WAERS sy-vline 
WA_PKW_HKWPGSI0_DATA_STR-EESRF sy-vline 
WA_PKW_HKWPGSI0_DATA_STR-RESRF sy-vline 
WA_PKW_HKWPGSI0_DATA_STR-PRIAM sy-vline 
WA_PKW_HKWPGSI0_DATA_STR-RPRIA sy-vline 
WA_PKW_HKWPGSI0_DATA_STR-PSICN sy-vline 
WA_PKW_HKWPGSI0_DATA_STR-ARMNTH sy-vline 
WA_PKW_HKWPGSI0_DATA_STR-RPNAM sy-vline      INTO ld_text SEPARATED BY SPACE.

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