ABAP Select data from SAP table P05_S_ZKM_WN into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P05_S_ZKM_WN 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 P05_S_ZKM_WN. 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 P05_S_ZKM_WN 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_P05_S_ZKM_WN TYPE STANDARD TABLE OF P05_S_ZKM_WN,
      WA_P05_S_ZKM_WN TYPE P05_S_ZKM_WN,
      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: <P05_S_ZKM_WN> TYPE P05_S_ZKM_WN.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P05_S_ZKM_WN.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P05_S_ZKM_WN
  INTO TABLE IT_P05_S_ZKM_WN.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P05_S_ZKM_WN
*  INTO TABLE @DATA(IT_P05_S_ZKM_WN2).
*--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_P05_S_ZKM_WN INDEX 1 INTO DATA(WA_P05_S_ZKM_WN2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P05_S_ZKM_WN ASSIGNING <P05_S_ZKM_WN>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P05_S_ZKM_WN>-WN_BSN = 1.
<P05_S_ZKM_WN>-WN_NAME = 1.
<P05_S_ZKM_WN>-WN_NAME_EXT = 1.
<P05_S_ZKM_WN>-WN_MALE = 1.
<P05_S_ZKM_WN>-WN_FEMALE = 1.

ENDLOOP.

LOOP AT IT_P05_S_ZKM_WN INTO WA_P05_S_ZKM_WN.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P05_S_ZKM_WN-WN_ADDRESS, sy-vline,
  WA_P05_S_ZKM_WN-WN_PCODE, sy-vline,
  WA_P05_S_ZKM_WN-WN_CITY, sy-vline,
  WA_P05_S_ZKM_WN-WN_PHONE, sy-vline,
  WA_P05_S_ZKM_WN-WN_MOBILE, sy-vline,
  WA_P05_S_ZKM_WN-WN_BIRTH, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P05_S_ZKM_WN 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_P05_S_ZKM_WN 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_P05_S_ZKM_WN INTO WA_P05_S_ZKM_WN.


*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_P05_S_ZKM_WN_STR, 
WN_BSN TYPE STRING,
WN_NAME TYPE STRING,
WN_NAME_EXT TYPE STRING,
WN_MALE TYPE STRING,
WN_FEMALE TYPE STRING,
WN_ADDRESS TYPE STRING,
WN_PCODE TYPE STRING,
WN_CITY TYPE STRING,
WN_PHONE TYPE STRING,
WN_MOBILE TYPE STRING,
WN_BIRTH TYPE STRING,
WN_ADDRESS2 TYPE STRING,
WN_PCODE2 TYPE STRING,
WN_CITY2 TYPE STRING,
WN_WORKED_NO TYPE STRING,
WN_WORKED_YES TYPE STRING,
WN_DATE TYPE STRING,
WN_DATE_FROM_1 TYPE STRING,
WN_DATE_TO_1 TYPE STRING,
WN_DATE_FROM_2 TYPE STRING,
WN_DATE_TO_2 TYPE STRING,
WN_DATE_FROM_3 TYPE STRING,
WN_DATE_TO_3 TYPE STRING,
WN_DATE_FROM_4 TYPE STRING,
WN_DATE_TO_4 TYPE STRING,
WN_DATE_FROM_5 TYPE STRING,
WN_DATE_TO_5 TYPE STRING,
WN_DATE_FROM_6 TYPE STRING,
WN_DATE_TO_6 TYPE STRING,
WN_DATE_FROM_7 TYPE STRING,
WN_DATE_TO_7 TYPE STRING,
WN_DATE_FROM_8 TYPE STRING,
WN_DATE_TO_8 TYPE STRING,
WN_DATE_FROM_9 TYPE STRING,
WN_DATE_TO_9 TYPE STRING,
WN_DATE_FROM_10 TYPE STRING,
WN_LAST_NAME TYPE STRING,
WN_TEMP_PCODE TYPE STRING,
WN_TEMP_HNO TYPE STRING,
WN_TEMP_ADDRESS TYPE STRING,
WN_TEMP_PCITY TYPE STRING,
WN_TEMP_COUNTRY TYPE STRING,
WN_TEMP_YES TYPE STRING,
WN_TEMP_NO TYPE STRING,
WN_TEMP_BEGDA TYPE STRING,
WN_TEMP_ENDDA TYPE STRING,
WN_VESTIGING TYPE STRING,
WN_NAME_COMPL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P05_S_ZKM_WN_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_P05_S_ZKM_WN_STR-WN_BSN sy-vline 
WA_P05_S_ZKM_WN_STR-WN_NAME sy-vline 
WA_P05_S_ZKM_WN_STR-WN_NAME_EXT sy-vline 
WA_P05_S_ZKM_WN_STR-WN_MALE sy-vline 
WA_P05_S_ZKM_WN_STR-WN_FEMALE sy-vline 
WA_P05_S_ZKM_WN_STR-WN_ADDRESS sy-vline 
WA_P05_S_ZKM_WN_STR-WN_PCODE sy-vline 
WA_P05_S_ZKM_WN_STR-WN_CITY sy-vline 
WA_P05_S_ZKM_WN_STR-WN_PHONE sy-vline 
WA_P05_S_ZKM_WN_STR-WN_MOBILE sy-vline 
WA_P05_S_ZKM_WN_STR-WN_BIRTH sy-vline 
WA_P05_S_ZKM_WN_STR-WN_ADDRESS2 sy-vline 
WA_P05_S_ZKM_WN_STR-WN_PCODE2 sy-vline 
WA_P05_S_ZKM_WN_STR-WN_CITY2 sy-vline 
WA_P05_S_ZKM_WN_STR-WN_WORKED_NO sy-vline 
WA_P05_S_ZKM_WN_STR-WN_WORKED_YES sy-vline 
WA_P05_S_ZKM_WN_STR-WN_DATE sy-vline 
WA_P05_S_ZKM_WN_STR-WN_DATE_FROM_1 sy-vline 
WA_P05_S_ZKM_WN_STR-WN_DATE_TO_1 sy-vline 
WA_P05_S_ZKM_WN_STR-WN_DATE_FROM_2 sy-vline 
WA_P05_S_ZKM_WN_STR-WN_DATE_TO_2 sy-vline 
WA_P05_S_ZKM_WN_STR-WN_DATE_FROM_3 sy-vline 
WA_P05_S_ZKM_WN_STR-WN_DATE_TO_3 sy-vline 
WA_P05_S_ZKM_WN_STR-WN_DATE_FROM_4 sy-vline 
WA_P05_S_ZKM_WN_STR-WN_DATE_TO_4 sy-vline 
WA_P05_S_ZKM_WN_STR-WN_DATE_FROM_5 sy-vline 
WA_P05_S_ZKM_WN_STR-WN_DATE_TO_5 sy-vline 
WA_P05_S_ZKM_WN_STR-WN_DATE_FROM_6 sy-vline 
WA_P05_S_ZKM_WN_STR-WN_DATE_TO_6 sy-vline 
WA_P05_S_ZKM_WN_STR-WN_DATE_FROM_7 sy-vline 
WA_P05_S_ZKM_WN_STR-WN_DATE_TO_7 sy-vline 
WA_P05_S_ZKM_WN_STR-WN_DATE_FROM_8 sy-vline 
WA_P05_S_ZKM_WN_STR-WN_DATE_TO_8 sy-vline 
WA_P05_S_ZKM_WN_STR-WN_DATE_FROM_9 sy-vline 
WA_P05_S_ZKM_WN_STR-WN_DATE_TO_9 sy-vline 
WA_P05_S_ZKM_WN_STR-WN_DATE_FROM_10 sy-vline 
WA_P05_S_ZKM_WN_STR-WN_LAST_NAME sy-vline 
WA_P05_S_ZKM_WN_STR-WN_TEMP_PCODE sy-vline 
WA_P05_S_ZKM_WN_STR-WN_TEMP_HNO sy-vline 
WA_P05_S_ZKM_WN_STR-WN_TEMP_ADDRESS sy-vline 
WA_P05_S_ZKM_WN_STR-WN_TEMP_PCITY sy-vline 
WA_P05_S_ZKM_WN_STR-WN_TEMP_COUNTRY sy-vline 
WA_P05_S_ZKM_WN_STR-WN_TEMP_YES sy-vline 
WA_P05_S_ZKM_WN_STR-WN_TEMP_NO sy-vline 
WA_P05_S_ZKM_WN_STR-WN_TEMP_BEGDA sy-vline 
WA_P05_S_ZKM_WN_STR-WN_TEMP_ENDDA sy-vline 
WA_P05_S_ZKM_WN_STR-WN_VESTIGING sy-vline 
WA_P05_S_ZKM_WN_STR-WN_NAME_COMPL sy-vline      INTO ld_text SEPARATED BY SPACE.

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