ABAP Select data from SAP table PPOITEMPAI5 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PPOITEMPAI5 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 PPOITEMPAI5. 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 PPOITEMPAI5 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_PPOITEMPAI5 TYPE STANDARD TABLE OF PPOITEMPAI5,
      WA_PPOITEMPAI5 TYPE PPOITEMPAI5,
      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: <PPOITEMPAI5> TYPE PPOITEMPAI5.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PPOITEMPAI5.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PPOITEMPAI5
  INTO TABLE IT_PPOITEMPAI5.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PPOITEMPAI5
*  INTO TABLE @DATA(IT_PPOITEMPAI52).
*--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_PPOITEMPAI5 INDEX 1 INTO DATA(WA_PPOITEMPAI52).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PPOITEMPAI5 ASSIGNING <PPOITEMPAI5>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PPOITEMPAI5>-MANDT = 1.
<PPOITEMPAI5>-PURCHASEORDERITEMCONCAT = 1.
<PPOITEMPAI5>-PURCHASEORDER = 1.
<PPOITEMPAI5>-PURCHASEORDERITEM = 1.
<PPOITEMPAI5>-PURCHASECONTRACTITEM = 1.

ENDLOOP.

LOOP AT IT_PPOITEMPAI5 INTO WA_PPOITEMPAI5.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PPOITEMPAI5-PURCHASECONTRACT, sy-vline,
  WA_PPOITEMPAI5-COMPANYCODE, sy-vline,
  WA_PPOITEMPAI5-PLANT, sy-vline,
  WA_PPOITEMPAI5-PURCHASEORDERCATEGORY, sy-vline,
  WA_PPOITEMPAI5-DOCUMENTCURRENCY, sy-vline,
  WA_PPOITEMPAI5-CONT_LEN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PPOITEMPAI5 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_PPOITEMPAI5 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_PPOITEMPAI5 INTO WA_PPOITEMPAI5.


*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 PURCHASEORDER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PPOITEMPAI5-PURCHASEORDER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PPOITEMPAI5-PURCHASEORDER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PURCHASECONTRACT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PPOITEMPAI5-PURCHASECONTRACT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PPOITEMPAI5-PURCHASECONTRACT.
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_PPOITEMPAI5_STR, 
MANDT TYPE STRING,
PURCHASEORDERITEMCONCAT TYPE STRING,
PURCHASEORDER TYPE STRING,
PURCHASEORDERITEM TYPE STRING,
PURCHASECONTRACTITEM TYPE STRING,
PURCHASECONTRACT TYPE STRING,
COMPANYCODE TYPE STRING,
PLANT TYPE STRING,
PURCHASEORDERCATEGORY TYPE STRING,
DOCUMENTCURRENCY TYPE STRING,
CONT_LEN TYPE STRING,
CONT_DAYS_LEFT TYPE STRING,
RUNNING_TOTAL TYPE STRING,
RUNNING_PERCENTAGE TYPE STRING,
PODATE_MONTH TYPE STRING,
PODATE_WEEKDAY TYPE STRING,
PODATE_WEEK TYPE STRING,
CONSUMEDQTY TYPE STRING,
PO_ITEMS_NUM TYPE STRING,
DAYS_INTERVAL TYPE STRING,
AVG_PO_AMT TYPE STRING,
AVG_PO_DAYS TYPE STRING,
DAYS2GO_QUANT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PPOITEMPAI5_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_PPOITEMPAI5_STR-MANDT sy-vline 
WA_PPOITEMPAI5_STR-PURCHASEORDERITEMCONCAT sy-vline 
WA_PPOITEMPAI5_STR-PURCHASEORDER sy-vline 
WA_PPOITEMPAI5_STR-PURCHASEORDERITEM sy-vline 
WA_PPOITEMPAI5_STR-PURCHASECONTRACTITEM sy-vline 
WA_PPOITEMPAI5_STR-PURCHASECONTRACT sy-vline 
WA_PPOITEMPAI5_STR-COMPANYCODE sy-vline 
WA_PPOITEMPAI5_STR-PLANT sy-vline 
WA_PPOITEMPAI5_STR-PURCHASEORDERCATEGORY sy-vline 
WA_PPOITEMPAI5_STR-DOCUMENTCURRENCY sy-vline 
WA_PPOITEMPAI5_STR-CONT_LEN sy-vline 
WA_PPOITEMPAI5_STR-CONT_DAYS_LEFT sy-vline 
WA_PPOITEMPAI5_STR-RUNNING_TOTAL sy-vline 
WA_PPOITEMPAI5_STR-RUNNING_PERCENTAGE sy-vline 
WA_PPOITEMPAI5_STR-PODATE_MONTH sy-vline 
WA_PPOITEMPAI5_STR-PODATE_WEEKDAY sy-vline 
WA_PPOITEMPAI5_STR-PODATE_WEEK sy-vline 
WA_PPOITEMPAI5_STR-CONSUMEDQTY sy-vline 
WA_PPOITEMPAI5_STR-PO_ITEMS_NUM sy-vline 
WA_PPOITEMPAI5_STR-DAYS_INTERVAL sy-vline 
WA_PPOITEMPAI5_STR-AVG_PO_AMT sy-vline 
WA_PPOITEMPAI5_STR-AVG_PO_DAYS sy-vline 
WA_PPOITEMPAI5_STR-DAYS2GO_QUANT sy-vline      INTO ld_text SEPARATED BY SPACE.

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