ABAP Select data from SAP table /MERP/PP_PO_COMP into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP /MERP/PP_PO_COMP 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 /MERP/PP_PO_COMP. 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 /MERP/PP_PO_COMP 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_/MERP/PP_PO_COMP TYPE STANDARD TABLE OF /MERP/PP_PO_COMP,
      WA_/MERP/PP_PO_COMP TYPE /MERP/PP_PO_COMP,
      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: </MERP/PP_PO_COMP> TYPE /MERP/PP_PO_COMP.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /MERP/PP_PO_COMP
  INTO TABLE IT_/MERP/PP_PO_COMP.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /MERP/PP_PO_COMP
*  INTO TABLE @DATA(IT_/MERP/PP_PO_COMP2).
*--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_/MERP/PP_PO_COMP INDEX 1 INTO DATA(WA_/MERP/PP_PO_COMP2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/MERP/PP_PO_COMP ASSIGNING </MERP/PP_PO_COMP>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</MERP/PP_PO_COMP>-MANDT = 1.
</MERP/PP_PO_COMP>-RESERVATION = 1.
</MERP/PP_PO_COMP>-RESERVATIONITEM = 1.
</MERP/PP_PO_COMP>-RECORDTYPE = 1.
</MERP/PP_PO_COMP>-MATERIAL = 1.

ENDLOOP.

LOOP AT IT_/MERP/PP_PO_COMP INTO WA_/MERP/PP_PO_COMP.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/MERP/PP_PO_COMP-MATERIALNAME, sy-vline,
  WA_/MERP/PP_PO_COMP-PLANT, sy-vline,
  WA_/MERP/PP_PO_COMP-ORDERID, sy-vline,
  WA_/MERP/PP_PO_COMP-ORDEROPERATION, sy-vline,
  WA_/MERP/PP_PO_COMP-RESERVATIONISFINALLYISSUED, sy-vline,
  WA_/MERP/PP_PO_COMP-STORAGELOCATION, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/MERP/PP_PO_COMP 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_/MERP/PP_PO_COMP 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_/MERP/PP_PO_COMP INTO WA_/MERP/PP_PO_COMP.


*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 MATN1, internal->external for field MATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_/MERP/PP_PO_COMP-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MERP/PP_PO_COMP-MATERIAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ORDERID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/MERP/PP_PO_COMP-ORDERID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MERP/PP_PO_COMP-ORDERID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field ORDEROPERATION
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_/MERP/PP_PO_COMP-ORDEROPERATION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/MERP/PP_PO_COMP-ORDEROPERATION.
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_/MERP/PP_PO_COMP_STR, 
MANDT TYPE STRING,
RESERVATION TYPE STRING,
RESERVATIONITEM TYPE STRING,
RECORDTYPE TYPE STRING,
MATERIAL TYPE STRING,
MATERIALNAME TYPE STRING,
PLANT TYPE STRING,
ORDERID TYPE STRING,
ORDEROPERATION TYPE STRING,
RESERVATIONISFINALLYISSUED TYPE STRING,
STORAGELOCATION TYPE STRING,
LATESTREQUIREMENTDATE TYPE STRING,
COMPONENTSCRAPINPERCENT TYPE STRING,
REQUIREDQUANTITY TYPE STRING,
WITHDRAWNQUANTITY TYPE STRING,
CONFIRMEDAVAILABLEQUANTITY TYPE STRING,
OPENQUANTITY TYPE STRING,
UNCOVEREDQUANTITY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/MERP/PP_PO_COMP_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_/MERP/PP_PO_COMP_STR-MANDT sy-vline 
WA_/MERP/PP_PO_COMP_STR-RESERVATION sy-vline 
WA_/MERP/PP_PO_COMP_STR-RESERVATIONITEM sy-vline 
WA_/MERP/PP_PO_COMP_STR-RECORDTYPE sy-vline 
WA_/MERP/PP_PO_COMP_STR-MATERIAL sy-vline 
WA_/MERP/PP_PO_COMP_STR-MATERIALNAME sy-vline 
WA_/MERP/PP_PO_COMP_STR-PLANT sy-vline 
WA_/MERP/PP_PO_COMP_STR-ORDERID sy-vline 
WA_/MERP/PP_PO_COMP_STR-ORDEROPERATION sy-vline 
WA_/MERP/PP_PO_COMP_STR-RESERVATIONISFINALLYISSUED sy-vline 
WA_/MERP/PP_PO_COMP_STR-STORAGELOCATION sy-vline 
WA_/MERP/PP_PO_COMP_STR-LATESTREQUIREMENTDATE sy-vline 
WA_/MERP/PP_PO_COMP_STR-COMPONENTSCRAPINPERCENT sy-vline 
WA_/MERP/PP_PO_COMP_STR-REQUIREDQUANTITY sy-vline 
WA_/MERP/PP_PO_COMP_STR-WITHDRAWNQUANTITY sy-vline 
WA_/MERP/PP_PO_COMP_STR-CONFIRMEDAVAILABLEQUANTITY sy-vline 
WA_/MERP/PP_PO_COMP_STR-OPENQUANTITY sy-vline 
WA_/MERP/PP_PO_COMP_STR-UNCOVEREDQUANTITY sy-vline      INTO ld_text SEPARATED BY SPACE.

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