ABAP Select data from SAP table PKW_HKWPPCR0_TBL into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PKW_HKWPPCR0_TBL 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_HKWPPCR0_TBL. 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_HKWPPCR0_TBL 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_HKWPPCR0_TBL TYPE STANDARD TABLE OF PKW_HKWPPCR0_TBL,
      WA_PKW_HKWPPCR0_TBL TYPE PKW_HKWPPCR0_TBL,
      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_HKWPPCR0_TBL> TYPE PKW_HKWPPCR0_TBL.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PKW_HKWPPCR0_TBL.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PKW_HKWPPCR0_TBL
  INTO TABLE IT_PKW_HKWPPCR0_TBL.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PKW_HKWPPCR0_TBL
*  INTO TABLE @DATA(IT_PKW_HKWPPCR0_TBL2).
*--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_HKWPPCR0_TBL INDEX 1 INTO DATA(WA_PKW_HKWPPCR0_TBL2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PKW_HKWPPCR0_TBL ASSIGNING <PKW_HKWPPCR0_TBL>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PKW_HKWPPCR0_TBL>-EEIDX = 1.
<PKW_HKWPPCR0_TBL>-PERNR = 1.
<PKW_HKWPPCR0_TBL>-FNAME = 1.
<PKW_HKWPPCR0_TBL>-MTPAY = 1.
<PKW_HKWPPCR0_TBL>-EDEPT = 1.

ENDLOOP.

LOOP AT IT_PKW_HKWPPCR0_TBL INTO WA_PKW_HKWPPCR0_TBL.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PKW_HKWPPCR0_TBL-WORKD, sy-vline,
  WA_PKW_HKWPPCR0_TBL-NOTPY, sy-vline,
  WA_PKW_HKWPPCR0_TBL-FOTPY, sy-vline,
  WA_PKW_HKWPPCR0_TBL-HOTPY, sy-vline,
  WA_PKW_HKWPPCR0_TBL-OTPAY, sy-vline,
  WA_PKW_HKWPPCR0_TBL-ADPAY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PKW_HKWPPCR0_TBL 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_HKWPPCR0_TBL 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_HKWPPCR0_TBL INTO WA_PKW_HKWPPCR0_TBL.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_PKW_HKWPPCR0_TBL_STR, 
EEIDX TYPE STRING,
PERNR TYPE STRING,
FNAME TYPE STRING,
MTPAY TYPE STRING,
EDEPT TYPE STRING,
WORKD TYPE STRING,
NOTPY TYPE STRING,
FOTPY TYPE STRING,
HOTPY TYPE STRING,
OTPAY TYPE STRING,
ADPAY TYPE STRING,
DTPAY TYPE STRING,
SALAR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PKW_HKWPPCR0_TBL_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_HKWPPCR0_TBL_STR-EEIDX sy-vline 
WA_PKW_HKWPPCR0_TBL_STR-PERNR sy-vline 
WA_PKW_HKWPPCR0_TBL_STR-FNAME sy-vline 
WA_PKW_HKWPPCR0_TBL_STR-MTPAY sy-vline 
WA_PKW_HKWPPCR0_TBL_STR-EDEPT sy-vline 
WA_PKW_HKWPPCR0_TBL_STR-WORKD sy-vline 
WA_PKW_HKWPPCR0_TBL_STR-NOTPY sy-vline 
WA_PKW_HKWPPCR0_TBL_STR-FOTPY sy-vline 
WA_PKW_HKWPPCR0_TBL_STR-HOTPY sy-vline 
WA_PKW_HKWPPCR0_TBL_STR-OTPAY sy-vline 
WA_PKW_HKWPPCR0_TBL_STR-ADPAY sy-vline 
WA_PKW_HKWPPCR0_TBL_STR-DTPAY sy-vline 
WA_PKW_HKWPPCR0_TBL_STR-SALAR sy-vline      INTO ld_text SEPARATED BY SPACE.

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