ABAP Select data from SAP table PALLOCOBJ into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PALLOCOBJ
*  INTO TABLE @DATA(IT_PALLOCOBJ2).
*--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_PALLOCOBJ INDEX 1 INTO DATA(WA_PALLOCOBJ2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PALLOCOBJ>-CLIENT = 1.
<PALLOCOBJ>-PRODUCTALLOCATIONOBJECTUUID = 1.
<PALLOCOBJ>-PRODUCTALLOCATIONOBJECT = 1.
<PALLOCOBJ>-PRODUCTALLOCATIONPERIODTYPE = 1.
<PALLOCOBJ>-PRODALLOCATIONPERIODTIMEZONE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PALLOCOBJ-FACTORYCALENDAR, sy-vline,
  WA_PALLOCOBJ-PRODALLOCCHECKDATETIMETYPE, sy-vline,
  WA_PALLOCOBJ-PRODUCTALLOCATIONQUANTITYUNIT, sy-vline,
  WA_PALLOCOBJ-COLLECTIVEALLOCATIONTYPE, sy-vline,
  WA_PALLOCOBJ-PRODALLOCATIONLIFECYCLESTATUS, sy-vline,
  WA_PALLOCOBJ-PRODALLOCCONSISTENCYSTATUS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PALLOCOBJ 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_PALLOCOBJ 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_PALLOCOBJ INTO WA_PALLOCOBJ.


*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 PRODUCTALLOCATIONOBJECT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PALLOCOBJ-PRODUCTALLOCATIONOBJECT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PALLOCOBJ-PRODUCTALLOCATIONOBJECT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field PRODUCTALLOCATIONQUANTITYUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PALLOCOBJ-PRODUCTALLOCATIONQUANTITYUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PALLOCOBJ-PRODUCTALLOCATIONQUANTITYUNIT.
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_PALLOCOBJ_STR, 
CLIENT TYPE STRING,
PRODUCTALLOCATIONOBJECTUUID TYPE STRING,
PRODUCTALLOCATIONOBJECT TYPE STRING,
PRODUCTALLOCATIONPERIODTYPE TYPE STRING,
PRODALLOCATIONPERIODTIMEZONE TYPE STRING,
FACTORYCALENDAR TYPE STRING,
PRODALLOCCHECKDATETIMETYPE TYPE STRING,
PRODUCTALLOCATIONQUANTITYUNIT TYPE STRING,
COLLECTIVEALLOCATIONTYPE TYPE STRING,
PRODALLOCATIONLIFECYCLESTATUS TYPE STRING,
PRODALLOCCONSISTENCYSTATUS TYPE STRING,
CREATIONDATETIME TYPE STRING,
CREATEDBYUSER TYPE STRING,
LASTCHANGEDATETIME TYPE STRING,
LASTCHANGEDBYUSER TYPE STRING,
ISSALESORDERALLOCOBJ TYPE STRING,
ISSTOCKTRANSFERORDERALLOCOBJ TYPE STRING,
PRODALLOCOBJPERIODAGEDTODATE TYPE STRING,
PALLOCOBJ_INCL_EEW_PS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PALLOCOBJ_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_PALLOCOBJ_STR-CLIENT sy-vline 
WA_PALLOCOBJ_STR-PRODUCTALLOCATIONOBJECTUUID sy-vline 
WA_PALLOCOBJ_STR-PRODUCTALLOCATIONOBJECT sy-vline 
WA_PALLOCOBJ_STR-PRODUCTALLOCATIONPERIODTYPE sy-vline 
WA_PALLOCOBJ_STR-PRODALLOCATIONPERIODTIMEZONE sy-vline 
WA_PALLOCOBJ_STR-FACTORYCALENDAR sy-vline 
WA_PALLOCOBJ_STR-PRODALLOCCHECKDATETIMETYPE sy-vline 
WA_PALLOCOBJ_STR-PRODUCTALLOCATIONQUANTITYUNIT sy-vline 
WA_PALLOCOBJ_STR-COLLECTIVEALLOCATIONTYPE sy-vline 
WA_PALLOCOBJ_STR-PRODALLOCATIONLIFECYCLESTATUS sy-vline 
WA_PALLOCOBJ_STR-PRODALLOCCONSISTENCYSTATUS sy-vline 
WA_PALLOCOBJ_STR-CREATIONDATETIME sy-vline 
WA_PALLOCOBJ_STR-CREATEDBYUSER sy-vline 
WA_PALLOCOBJ_STR-LASTCHANGEDATETIME sy-vline 
WA_PALLOCOBJ_STR-LASTCHANGEDBYUSER sy-vline 
WA_PALLOCOBJ_STR-ISSALESORDERALLOCOBJ sy-vline 
WA_PALLOCOBJ_STR-ISSTOCKTRANSFERORDERALLOCOBJ sy-vline 
WA_PALLOCOBJ_STR-PRODALLOCOBJPERIODAGEDTODATE sy-vline 
WA_PALLOCOBJ_STR-PALLOCOBJ_INCL_EEW_PS sy-vline      INTO ld_text SEPARATED BY SPACE.

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