ABAP Select data from SAP table MMIMPURORDITEMS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MMIMPURORDITEMS
*  INTO TABLE @DATA(IT_MMIMPURORDITEMS2).
*--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_MMIMPURORDITEMS INDEX 1 INTO DATA(WA_MMIMPURORDITEMS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MMIMPURORDITEMS>-MANDT = 1.
<MMIMPURORDITEMS>-PURCHASEORDER = 1.
<MMIMPURORDITEMS>-PURCHASEORDERITEM = 1.
<MMIMPURORDITEMS>-PURCHASEORDERTYPE = 1.
<MMIMPURORDITEMS>-PURCHASINGDOCUMENTCATEGORY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MMIMPURORDITEMS-PURCHASINGDOCUMENTSUBTYPE, sy-vline,
  WA_MMIMPURORDITEMS-PURORDPURCHASINGORGANIZATION, sy-vline,
  WA_MMIMPURORDITEMS-PURORDPURCHASINGGROUP, sy-vline,
  WA_MMIMPURORDITEMS-PURCHASINGPROCESSINGSTATUS, sy-vline,
  WA_MMIMPURORDITEMS-PURCHASEORDERHISTCATEGORY, sy-vline,
  WA_MMIMPURORDITEMS-SUPPLYINGPLANT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MMIMPURORDITEMS 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_MMIMPURORDITEMS 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_MMIMPURORDITEMS INTO WA_MMIMPURORDITEMS.


*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_MMIMPURORDITEMS-PURCHASEORDER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMIMPURORDITEMS-PURCHASEORDER.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit MATN1, internal->external for field MATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_MMIMPURORDITEMS-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMIMPURORDITEMS-MATERIAL.
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_MMIMPURORDITEMS_STR, 
MANDT TYPE STRING,
PURCHASEORDER TYPE STRING,
PURCHASEORDERITEM TYPE STRING,
PURCHASEORDERTYPE TYPE STRING,
PURCHASINGDOCUMENTCATEGORY TYPE STRING,
PURCHASINGDOCUMENTSUBTYPE TYPE STRING,
PURORDPURCHASINGORGANIZATION TYPE STRING,
PURORDPURCHASINGGROUP TYPE STRING,
PURCHASINGPROCESSINGSTATUS TYPE STRING,
PURCHASEORDERHISTCATEGORY TYPE STRING,
SUPPLYINGPLANT TYPE STRING,
SUPPLIER TYPE STRING,
ACCOUNTASSIGNMENTCATEGORY TYPE STRING,
MATERIAL TYPE STRING,
PURCHASEORDERITEMTEXT TYPE STRING,
PLANT TYPE STRING,
ISCOMPLETELYDELIVERED TYPE STRING,
PURCHASINGDOCUMENTITEMCATEGORY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MMIMPURORDITEMS_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_MMIMPURORDITEMS_STR-MANDT sy-vline 
WA_MMIMPURORDITEMS_STR-PURCHASEORDER sy-vline 
WA_MMIMPURORDITEMS_STR-PURCHASEORDERITEM sy-vline 
WA_MMIMPURORDITEMS_STR-PURCHASEORDERTYPE sy-vline 
WA_MMIMPURORDITEMS_STR-PURCHASINGDOCUMENTCATEGORY sy-vline 
WA_MMIMPURORDITEMS_STR-PURCHASINGDOCUMENTSUBTYPE sy-vline 
WA_MMIMPURORDITEMS_STR-PURORDPURCHASINGORGANIZATION sy-vline 
WA_MMIMPURORDITEMS_STR-PURORDPURCHASINGGROUP sy-vline 
WA_MMIMPURORDITEMS_STR-PURCHASINGPROCESSINGSTATUS sy-vline 
WA_MMIMPURORDITEMS_STR-PURCHASEORDERHISTCATEGORY sy-vline 
WA_MMIMPURORDITEMS_STR-SUPPLYINGPLANT sy-vline 
WA_MMIMPURORDITEMS_STR-SUPPLIER sy-vline 
WA_MMIMPURORDITEMS_STR-ACCOUNTASSIGNMENTCATEGORY sy-vline 
WA_MMIMPURORDITEMS_STR-MATERIAL sy-vline 
WA_MMIMPURORDITEMS_STR-PURCHASEORDERITEMTEXT sy-vline 
WA_MMIMPURORDITEMS_STR-PLANT sy-vline 
WA_MMIMPURORDITEMS_STR-ISCOMPLETELYDELIVERED sy-vline 
WA_MMIMPURORDITEMS_STR-PURCHASINGDOCUMENTITEMCATEGORY sy-vline      INTO ld_text SEPARATED BY SPACE.

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