ABAP Select data from SAP table POVWPAORDITM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM POVWPAORDITM
*  INTO TABLE @DATA(IT_POVWPAORDITM2).
*--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_POVWPAORDITM INDEX 1 INTO DATA(WA_POVWPAORDITM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<POVWPAORDITM>-MANDT = 1.
<POVWPAORDITM>-PRODALLOCASSIGNEDORDER = 1.
<POVWPAORDITM>-PRODALLOCASSIGNEDORDERITEM = 1.
<POVWPAORDITM>-PRODALLOCASSIGNEDORDERTYPE = 1.
<POVWPAORDITM>-ORDERITEM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_POVWPAORDITM-PURCHASEORDERITEM, sy-vline,
  WA_POVWPAORDITM-PRODUCTALLOCATIONOBJECT, sy-vline,
  WA_POVWPAORDITM-PRODALLOCCHARCCTLGPATHUUID01, sy-vline,
  WA_POVWPAORDITM-PRODALLOCCHARCCTLGPATHUUID02, sy-vline,
  WA_POVWPAORDITM-PRODALLOCCHARCCTLGPATHUUID03, sy-vline,
  WA_POVWPAORDITM-PRODALLOCCHARCCTLGPATHUUID04, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_POVWPAORDITM 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_POVWPAORDITM 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_POVWPAORDITM INTO WA_POVWPAORDITM.


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

*Conversion exit ALPHA, internal->external for field PRODUCTALLOCATIONOBJECT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_POVWPAORDITM-PRODUCTALLOCATIONOBJECT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_POVWPAORDITM-PRODUCTALLOCATIONOBJECT.
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_POVWPAORDITM_STR, 
MANDT TYPE STRING,
PRODALLOCASSIGNEDORDER TYPE STRING,
PRODALLOCASSIGNEDORDERITEM TYPE STRING,
PRODALLOCASSIGNEDORDERTYPE TYPE STRING,
ORDERITEM TYPE STRING,
PURCHASEORDERITEM TYPE STRING,
PRODUCTALLOCATIONOBJECT TYPE STRING,
PRODALLOCCHARCCTLGPATHUUID01 TYPE STRING,
PRODALLOCCHARCCTLGPATHUUID02 TYPE STRING,
PRODALLOCCHARCCTLGPATHUUID03 TYPE STRING,
PRODALLOCCHARCCTLGPATHUUID04 TYPE STRING,
PRODALLOCCHARCCTLGPATHUUID05 TYPE STRING,
PRODALLOCCHARCCTLGPATHUUID06 TYPE STRING,
PRODALLOCCHARCCTLGPATHUUID07 TYPE STRING,
PRODALLOCCHARCCTLGPATHUUID08 TYPE STRING,
PRODALLOCCHARCCTLGPATHUUID09 TYPE STRING,
PRODALLOCCHARCCTLGPATHUUID10 TYPE STRING,
PRODALLOCCHARC01 TYPE STRING,
PRODALLOCCHARC02 TYPE STRING,
PRODALLOCCHARC03 TYPE STRING,
PRODALLOCCHARC04 TYPE STRING,
PRODALLOCCHARC05 TYPE STRING,
PRODALLOCCHARC06 TYPE STRING,
PRODALLOCCHARC07 TYPE STRING,
PRODALLOCCHARC08 TYPE STRING,
PRODALLOCCHARC09 TYPE STRING,
PRODALLOCCHARC10 TYPE STRING,
CHARCVALAUTHZNGROUP TYPE STRING,
REQUESTEDDELIVERYDATE TYPE STRING,
PRODUCTALLOCATIONPERIODENDDATE TYPE STRING,
PRODALLOCATPSTATUS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_POVWPAORDITM_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_POVWPAORDITM_STR-MANDT sy-vline 
WA_POVWPAORDITM_STR-PRODALLOCASSIGNEDORDER sy-vline 
WA_POVWPAORDITM_STR-PRODALLOCASSIGNEDORDERITEM sy-vline 
WA_POVWPAORDITM_STR-PRODALLOCASSIGNEDORDERTYPE sy-vline 
WA_POVWPAORDITM_STR-ORDERITEM sy-vline 
WA_POVWPAORDITM_STR-PURCHASEORDERITEM sy-vline 
WA_POVWPAORDITM_STR-PRODUCTALLOCATIONOBJECT sy-vline 
WA_POVWPAORDITM_STR-PRODALLOCCHARCCTLGPATHUUID01 sy-vline 
WA_POVWPAORDITM_STR-PRODALLOCCHARCCTLGPATHUUID02 sy-vline 
WA_POVWPAORDITM_STR-PRODALLOCCHARCCTLGPATHUUID03 sy-vline 
WA_POVWPAORDITM_STR-PRODALLOCCHARCCTLGPATHUUID04 sy-vline 
WA_POVWPAORDITM_STR-PRODALLOCCHARCCTLGPATHUUID05 sy-vline 
WA_POVWPAORDITM_STR-PRODALLOCCHARCCTLGPATHUUID06 sy-vline 
WA_POVWPAORDITM_STR-PRODALLOCCHARCCTLGPATHUUID07 sy-vline 
WA_POVWPAORDITM_STR-PRODALLOCCHARCCTLGPATHUUID08 sy-vline 
WA_POVWPAORDITM_STR-PRODALLOCCHARCCTLGPATHUUID09 sy-vline 
WA_POVWPAORDITM_STR-PRODALLOCCHARCCTLGPATHUUID10 sy-vline 
WA_POVWPAORDITM_STR-PRODALLOCCHARC01 sy-vline 
WA_POVWPAORDITM_STR-PRODALLOCCHARC02 sy-vline 
WA_POVWPAORDITM_STR-PRODALLOCCHARC03 sy-vline 
WA_POVWPAORDITM_STR-PRODALLOCCHARC04 sy-vline 
WA_POVWPAORDITM_STR-PRODALLOCCHARC05 sy-vline 
WA_POVWPAORDITM_STR-PRODALLOCCHARC06 sy-vline 
WA_POVWPAORDITM_STR-PRODALLOCCHARC07 sy-vline 
WA_POVWPAORDITM_STR-PRODALLOCCHARC08 sy-vline 
WA_POVWPAORDITM_STR-PRODALLOCCHARC09 sy-vline 
WA_POVWPAORDITM_STR-PRODALLOCCHARC10 sy-vline 
WA_POVWPAORDITM_STR-CHARCVALAUTHZNGROUP sy-vline 
WA_POVWPAORDITM_STR-REQUESTEDDELIVERYDATE sy-vline 
WA_POVWPAORDITM_STR-PRODUCTALLOCATIONPERIODENDDATE sy-vline 
WA_POVWPAORDITM_STR-PRODALLOCATPSTATUS sy-vline      INTO ld_text SEPARATED BY SPACE.

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