ABAP Select data from SAP table PCOMPCODEASSETCL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PCOMPCODEASSETCL
*  INTO TABLE @DATA(IT_PCOMPCODEASSETCL2).
*--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_PCOMPCODEASSETCL INDEX 1 INTO DATA(WA_PCOMPCODEASSETCL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PCOMPCODEASSETCL>-MANDT = 1.
<PCOMPCODEASSETCL>-COMPANYCODE = 1.
<PCOMPCODEASSETCL>-ASSETCLASS = 1.
<PCOMPCODEASSETCL>-FIXEDASSETGROUP = 1.
<PCOMPCODEASSETCL>-ASSETSCREENLAYOUT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PCOMPCODEASSETCL-ASSETCLASSDOWNPAYMENTISALLOWED, sy-vline,
  WA_PCOMPCODEASSETCL-ASSETCLASSISBLOCKED, sy-vline,
  WA_PCOMPCODEASSETCL-INVENTORYISCOUNTED, sy-vline,
  WA_PCOMPCODEASSETCL-FIXEDASSETPROPERTYTYPE, sy-vline,
  WA_PCOMPCODEASSETCL-PROPERTYCLASS, sy-vline,
  WA_PCOMPCODEASSETCL-AREASIZEUNIT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PCOMPCODEASSETCL 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_PCOMPCODEASSETCL 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_PCOMPCODEASSETCL INTO WA_PCOMPCODEASSETCL.


*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 ALPHA, internal->external for field ASSETCLASS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PCOMPCODEASSETCL-ASSETCLASS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PCOMPCODEASSETCL-ASSETCLASS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PROPERTYCLASS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PCOMPCODEASSETCL-PROPERTYCLASS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PCOMPCODEASSETCL-PROPERTYCLASS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field AREASIZEUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PCOMPCODEASSETCL-AREASIZEUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PCOMPCODEASSETCL-AREASIZEUNIT.
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_PCOMPCODEASSETCL_STR, 
MANDT TYPE STRING,
COMPANYCODE TYPE STRING,
ASSETCLASS TYPE STRING,
FIXEDASSETGROUP TYPE STRING,
ASSETSCREENLAYOUT TYPE STRING,
ASSETCLASSDOWNPAYMENTISALLOWED TYPE STRING,
ASSETCLASSISBLOCKED TYPE STRING,
INVENTORYISCOUNTED TYPE STRING,
FIXEDASSETPROPERTYTYPE TYPE STRING,
PROPERTYCLASS TYPE STRING,
AREASIZEUNIT TYPE STRING,
ASSETAUTHORIZATIONCONTEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PCOMPCODEASSETCL_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_PCOMPCODEASSETCL_STR-MANDT sy-vline 
WA_PCOMPCODEASSETCL_STR-COMPANYCODE sy-vline 
WA_PCOMPCODEASSETCL_STR-ASSETCLASS sy-vline 
WA_PCOMPCODEASSETCL_STR-FIXEDASSETGROUP sy-vline 
WA_PCOMPCODEASSETCL_STR-ASSETSCREENLAYOUT sy-vline 
WA_PCOMPCODEASSETCL_STR-ASSETCLASSDOWNPAYMENTISALLOWED sy-vline 
WA_PCOMPCODEASSETCL_STR-ASSETCLASSISBLOCKED sy-vline 
WA_PCOMPCODEASSETCL_STR-INVENTORYISCOUNTED sy-vline 
WA_PCOMPCODEASSETCL_STR-FIXEDASSETPROPERTYTYPE sy-vline 
WA_PCOMPCODEASSETCL_STR-PROPERTYCLASS sy-vline 
WA_PCOMPCODEASSETCL_STR-AREASIZEUNIT sy-vline 
WA_PCOMPCODEASSETCL_STR-ASSETAUTHORIZATIONCONTEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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