ABAP Select data from SAP table IPMRPPROD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IPMRPPROD
*  INTO TABLE @DATA(IT_IPMRPPROD2).
*--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_IPMRPPROD INDEX 1 INTO DATA(WA_IPMRPPROD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IPMRPPROD>-MANDT = 1.
<IPMRPPROD>-PMRPREFERENCEPLAN = 1.
<IPMRPPROD>-PRODUCT = 1.
<IPMRPPROD>-PLANT = 1.
<IPMRPPROD>-MRPAREA = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IPMRPPROD-LOWLEVELCODE, sy-vline,
  WA_IPMRPPROD-BOMISRECURSIVE, sy-vline,
  WA_IPMRPPROD-UNITOFMEASURE, sy-vline,
  WA_IPMRPPROD-AVAILABLESTOCKQUANTITY, sy-vline,
  WA_IPMRPPROD-SAFETYSTOCKQUANTITY, sy-vline,
  WA_IPMRPPROD-FACTORYCALENDAR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IPMRPPROD 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_IPMRPPROD 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_IPMRPPROD INTO WA_IPMRPPROD.


*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 PRODUCT
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_IPMRPPROD-PRODUCT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IPMRPPROD-PRODUCT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field UNITOFMEASURE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_IPMRPPROD-UNITOFMEASURE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IPMRPPROD-UNITOFMEASURE.
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_IPMRPPROD_STR, 
MANDT TYPE STRING,
PMRPREFERENCEPLAN TYPE STRING,
PRODUCT TYPE STRING,
PLANT TYPE STRING,
MRPAREA TYPE STRING,
LOWLEVELCODE TYPE STRING,
BOMISRECURSIVE TYPE STRING,
UNITOFMEASURE TYPE STRING,
AVAILABLESTOCKQUANTITY TYPE STRING,
SAFETYSTOCKQUANTITY TYPE STRING,
FACTORYCALENDAR TYPE STRING,
MRPCONTROLLER TYPE STRING,
PRODUCTGROUP TYPE STRING,
MRPTYPE TYPE STRING,
MRPPROCEDURE TYPE STRING,
MATERIALNAME TYPE STRING,
ISKANBANREPLENISHMENTELEMENT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IPMRPPROD_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_IPMRPPROD_STR-MANDT sy-vline 
WA_IPMRPPROD_STR-PMRPREFERENCEPLAN sy-vline 
WA_IPMRPPROD_STR-PRODUCT sy-vline 
WA_IPMRPPROD_STR-PLANT sy-vline 
WA_IPMRPPROD_STR-MRPAREA sy-vline 
WA_IPMRPPROD_STR-LOWLEVELCODE sy-vline 
WA_IPMRPPROD_STR-BOMISRECURSIVE sy-vline 
WA_IPMRPPROD_STR-UNITOFMEASURE sy-vline 
WA_IPMRPPROD_STR-AVAILABLESTOCKQUANTITY sy-vline 
WA_IPMRPPROD_STR-SAFETYSTOCKQUANTITY sy-vline 
WA_IPMRPPROD_STR-FACTORYCALENDAR sy-vline 
WA_IPMRPPROD_STR-MRPCONTROLLER sy-vline 
WA_IPMRPPROD_STR-PRODUCTGROUP sy-vline 
WA_IPMRPPROD_STR-MRPTYPE sy-vline 
WA_IPMRPPROD_STR-MRPPROCEDURE sy-vline 
WA_IPMRPPROD_STR-MATERIALNAME sy-vline 
WA_IPMRPPROD_STR-ISKANBANREPLENISHMENTELEMENT sy-vline      INTO ld_text SEPARATED BY SPACE.

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