ABAP Select data from SAP table PPURREQNFACTS2 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PPURREQNFACTS2 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 PPURREQNFACTS2. 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 PPURREQNFACTS2 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_PPURREQNFACTS2 TYPE STANDARD TABLE OF PPURREQNFACTS2,
      WA_PPURREQNFACTS2 TYPE PPURREQNFACTS2,
      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: <PPURREQNFACTS2> TYPE PPURREQNFACTS2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_PPURREQNFACTS2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM PPURREQNFACTS2
  INTO TABLE IT_PPURREQNFACTS2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PPURREQNFACTS2
*  INTO TABLE @DATA(IT_PPURREQNFACTS22).
*--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_PPURREQNFACTS2 INDEX 1 INTO DATA(WA_PPURREQNFACTS22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_PPURREQNFACTS2 ASSIGNING <PPURREQNFACTS2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PPURREQNFACTS2>-MANDT = 1.
<PPURREQNFACTS2>-PURCHASEREQUISITION = 1.
<PPURREQNFACTS2>-PURCHASEREQUISITIONITEM = 1.
<PPURREQNFACTS2>-PURCHASEREQUISITIONTYPE = 1.
<PPURREQNFACTS2>-PLANT = 1.

ENDLOOP.

LOOP AT IT_PPURREQNFACTS2 INTO WA_PPURREQNFACTS2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PPURREQNFACTS2-PURCHASINGORGANIZATION, sy-vline,
  WA_PPURREQNFACTS2-PURCHASINGGROUP, sy-vline,
  WA_PPURREQNFACTS2-PURCHASEREQUISITIONITEMTEXT, sy-vline,
  WA_PPURREQNFACTS2-CREATEDBYUSER, sy-vline,
  WA_PPURREQNFACTS2-PURREQCREATIONDATE, sy-vline,
  WA_PPURREQNFACTS2-PURREQNSSPREQUESTOR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PPURREQNFACTS2 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_PPURREQNFACTS2 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_PPURREQNFACTS2 INTO WA_PPURREQNFACTS2.


*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 PURCHASEREQUISITION
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PPURREQNFACTS2-PURCHASEREQUISITION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PPURREQNFACTS2-PURCHASEREQUISITION.
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_PPURREQNFACTS2_STR, 
MANDT TYPE STRING,
PURCHASEREQUISITION TYPE STRING,
PURCHASEREQUISITIONITEM TYPE STRING,
PURCHASEREQUISITIONTYPE TYPE STRING,
PLANT TYPE STRING,
PURCHASINGORGANIZATION TYPE STRING,
PURCHASINGGROUP TYPE STRING,
PURCHASEREQUISITIONITEMTEXT TYPE STRING,
CREATEDBYUSER TYPE STRING,
PURREQCREATIONDATE TYPE STRING,
PURREQNSSPREQUESTOR TYPE STRING,
CREATEDBYUSERFULLNAME TYPE STRING,
PURREQNREQUESTOR TYPE STRING,
PURREQNTOTALAMOUNTINDSPCRCY TYPE STRING,
DISPLAYCURRENCY TYPE STRING,
NUMBEROFITEMS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PPURREQNFACTS2_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_PPURREQNFACTS2_STR-MANDT sy-vline 
WA_PPURREQNFACTS2_STR-PURCHASEREQUISITION sy-vline 
WA_PPURREQNFACTS2_STR-PURCHASEREQUISITIONITEM sy-vline 
WA_PPURREQNFACTS2_STR-PURCHASEREQUISITIONTYPE sy-vline 
WA_PPURREQNFACTS2_STR-PLANT sy-vline 
WA_PPURREQNFACTS2_STR-PURCHASINGORGANIZATION sy-vline 
WA_PPURREQNFACTS2_STR-PURCHASINGGROUP sy-vline 
WA_PPURREQNFACTS2_STR-PURCHASEREQUISITIONITEMTEXT sy-vline 
WA_PPURREQNFACTS2_STR-CREATEDBYUSER sy-vline 
WA_PPURREQNFACTS2_STR-PURREQCREATIONDATE sy-vline 
WA_PPURREQNFACTS2_STR-PURREQNSSPREQUESTOR sy-vline 
WA_PPURREQNFACTS2_STR-CREATEDBYUSERFULLNAME sy-vline 
WA_PPURREQNFACTS2_STR-PURREQNREQUESTOR sy-vline 
WA_PPURREQNFACTS2_STR-PURREQNTOTALAMOUNTINDSPCRCY sy-vline 
WA_PPURREQNFACTS2_STR-DISPLAYCURRENCY sy-vline 
WA_PPURREQNFACTS2_STR-NUMBEROFITEMS sy-vline      INTO ld_text SEPARATED BY SPACE.

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