ABAP Select data from SAP table P21_PS_S_3265_OM_KULSZ into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P21_PS_S_3265_OM_KULSZ 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 P21_PS_S_3265_OM_KULSZ. 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 P21_PS_S_3265_OM_KULSZ 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_P21_PS_S_3265_OM_KULSZ TYPE STANDARD TABLE OF P21_PS_S_3265_OM_KULSZ,
      WA_P21_PS_S_3265_OM_KULSZ TYPE P21_PS_S_3265_OM_KULSZ,
      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: <P21_PS_S_3265_OM_KULSZ> TYPE P21_PS_S_3265_OM_KULSZ.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P21_PS_S_3265_OM_KULSZ.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P21_PS_S_3265_OM_KULSZ
  INTO TABLE IT_P21_PS_S_3265_OM_KULSZ.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P21_PS_S_3265_OM_KULSZ
*  INTO TABLE @DATA(IT_P21_PS_S_3265_OM_KULSZ2).
*--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_P21_PS_S_3265_OM_KULSZ INDEX 1 INTO DATA(WA_P21_PS_S_3265_OM_KULSZ2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P21_PS_S_3265_OM_KULSZ ASSIGNING <P21_PS_S_3265_OM_KULSZ>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P21_PS_S_3265_OM_KULSZ>-PERSG = 1.
<P21_PS_S_3265_OM_KULSZ>-PERSK = 1.
<P21_PS_S_3265_OM_KULSZ>-STELL = 1.
<P21_PS_S_3265_OM_KULSZ>-RFKOD = 1.
<P21_PS_S_3265_OM_KULSZ>-BESKAT = 1.

ENDLOOP.

LOOP AT IT_P21_PS_S_3265_OM_KULSZ INTO WA_P21_PS_S_3265_OM_KULSZ.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P21_PS_S_3265_OM_KULSZ-TRFAR, sy-vline,
  WA_P21_PS_S_3265_OM_KULSZ-TRFGB, sy-vline,
  WA_P21_PS_S_3265_OM_KULSZ-TRFGR, sy-vline,
  WA_P21_PS_S_3265_OM_KULSZ-TRFST, sy-vline,
  WA_P21_PS_S_3265_OM_KULSZ-FALGR, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_P21_PS_S_3265_OM_KULSZ 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_P21_PS_S_3265_OM_KULSZ 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_P21_PS_S_3265_OM_KULSZ INTO WA_P21_PS_S_3265_OM_KULSZ.


*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_P21_PS_S_3265_OM_KULSZ_STR, 
PERSG TYPE STRING,
PERSK TYPE STRING,
STELL TYPE STRING,
RFKOD TYPE STRING,
BESKAT TYPE STRING,
TRFAR TYPE STRING,
TRFGB TYPE STRING,
TRFGR TYPE STRING,
TRFST TYPE STRING,
FALGR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P21_PS_S_3265_OM_KULSZ_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_P21_PS_S_3265_OM_KULSZ_STR-PERSG sy-vline 
WA_P21_PS_S_3265_OM_KULSZ_STR-PERSK sy-vline 
WA_P21_PS_S_3265_OM_KULSZ_STR-STELL sy-vline 
WA_P21_PS_S_3265_OM_KULSZ_STR-RFKOD sy-vline 
WA_P21_PS_S_3265_OM_KULSZ_STR-BESKAT sy-vline 
WA_P21_PS_S_3265_OM_KULSZ_STR-TRFAR sy-vline 
WA_P21_PS_S_3265_OM_KULSZ_STR-TRFGB sy-vline 
WA_P21_PS_S_3265_OM_KULSZ_STR-TRFGR sy-vline 
WA_P21_PS_S_3265_OM_KULSZ_STR-TRFST sy-vline 
WA_P21_PS_S_3265_OM_KULSZ_STR-FALGR sy-vline      INTO ld_text SEPARATED BY SPACE.

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