ABAP Select data from SAP table IPALLOCOBJTP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IPALLOCOBJTP
*  INTO TABLE @DATA(IT_IPALLOCOBJTP2).
*--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_IPALLOCOBJTP INDEX 1 INTO DATA(WA_IPALLOCOBJTP2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IPALLOCOBJTP-FACTORYCALENDAR, sy-vline,
  WA_IPALLOCOBJTP-PRODALLOCCHECKDATETIMETYPE, sy-vline,
  WA_IPALLOCOBJTP-PRODUCTALLOCATIONQUANTITYUNIT, sy-vline,
  WA_IPALLOCOBJTP-COLLECTIVEALLOCATIONTYPE, sy-vline,
  WA_IPALLOCOBJTP-ISSALESORDERALLOCOBJ, sy-vline,
  WA_IPALLOCOBJTP-ISSTOCKTRANSFERORDERALLOCOBJ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IPALLOCOBJTP 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_IPALLOCOBJTP 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_IPALLOCOBJTP INTO WA_IPALLOCOBJTP.


*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_IPALLOCOBJTP-PRODUCTALLOCATIONOBJECT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IPALLOCOBJTP-PRODUCTALLOCATIONOBJECT.
WRITE:/ 'New Value:', ld_input.

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

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