ABAP Select data from SAP table MMIMPURDOCVH into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MMIMPURDOCVH
*  INTO TABLE @DATA(IT_MMIMPURDOCVH2).
*--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_MMIMPURDOCVH INDEX 1 INTO DATA(WA_MMIMPURDOCVH2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MMIMPURDOCVH>-MANDT = 1.
<MMIMPURDOCVH>-PURCHASEORDER = 1.
<MMIMPURDOCVH>-PURCHASEORDERITEM = 1.
<MMIMPURDOCVH>-SUPPLIER = 1.
<MMIMPURDOCVH>-SUPPLIERNAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MMIMPURDOCVH-SUPPLIERCITYNAME, sy-vline,
  WA_MMIMPURDOCVH-MATERIAL, sy-vline,
  WA_MMIMPURDOCVH-PURCHASEORDERITEMTEXT, sy-vline,
  WA_MMIMPURDOCVH-SUPPLYINGPLANT, sy-vline,
  WA_MMIMPURDOCVH-SUPPLYINGPLANTNAME, sy-vline,
  WA_MMIMPURDOCVH-AUTHORIZATIONGROUP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MMIMPURDOCVH 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_MMIMPURDOCVH 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_MMIMPURDOCVH INTO WA_MMIMPURDOCVH.


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

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

*Conversion exit MATN1, internal->external for field MATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_MMIMPURDOCVH-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMIMPURDOCVH-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_MMIMPURDOCVH_STR, 
MANDT TYPE STRING,
PURCHASEORDER TYPE STRING,
PURCHASEORDERITEM TYPE STRING,
SUPPLIER TYPE STRING,
SUPPLIERNAME TYPE STRING,
SUPPLIERCITYNAME TYPE STRING,
MATERIAL TYPE STRING,
PURCHASEORDERITEMTEXT TYPE STRING,
SUPPLYINGPLANT TYPE STRING,
SUPPLYINGPLANTNAME TYPE STRING,
AUTHORIZATIONGROUP TYPE STRING,
PURCHASINGDOCUMENTTYPE TYPE STRING,
PURCHASINGDOCUMENTTYPENAME TYPE STRING,
PURCHASINGDOCUMENTCATEGORY TYPE STRING,
PURCHASINGDOCUMENTCATEGORYNAME TYPE STRING,
PURORDPURCHASINGORGANIZATION TYPE STRING,
PURORDPURCHASINGGROUP TYPE STRING,
ACCOUNTASSIGNMENTCATEGORY TYPE STRING,
PLANT TYPE STRING,
ISCOMPLETELYDELIVERED TYPE STRING,
PURCHASINGDOCUMENTITEMCATEGORY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MMIMPURDOCVH_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_MMIMPURDOCVH_STR-MANDT sy-vline 
WA_MMIMPURDOCVH_STR-PURCHASEORDER sy-vline 
WA_MMIMPURDOCVH_STR-PURCHASEORDERITEM sy-vline 
WA_MMIMPURDOCVH_STR-SUPPLIER sy-vline 
WA_MMIMPURDOCVH_STR-SUPPLIERNAME sy-vline 
WA_MMIMPURDOCVH_STR-SUPPLIERCITYNAME sy-vline 
WA_MMIMPURDOCVH_STR-MATERIAL sy-vline 
WA_MMIMPURDOCVH_STR-PURCHASEORDERITEMTEXT sy-vline 
WA_MMIMPURDOCVH_STR-SUPPLYINGPLANT sy-vline 
WA_MMIMPURDOCVH_STR-SUPPLYINGPLANTNAME sy-vline 
WA_MMIMPURDOCVH_STR-AUTHORIZATIONGROUP sy-vline 
WA_MMIMPURDOCVH_STR-PURCHASINGDOCUMENTTYPE sy-vline 
WA_MMIMPURDOCVH_STR-PURCHASINGDOCUMENTTYPENAME sy-vline 
WA_MMIMPURDOCVH_STR-PURCHASINGDOCUMENTCATEGORY sy-vline 
WA_MMIMPURDOCVH_STR-PURCHASINGDOCUMENTCATEGORYNAME sy-vline 
WA_MMIMPURDOCVH_STR-PURORDPURCHASINGORGANIZATION sy-vline 
WA_MMIMPURDOCVH_STR-PURORDPURCHASINGGROUP sy-vline 
WA_MMIMPURDOCVH_STR-ACCOUNTASSIGNMENTCATEGORY sy-vline 
WA_MMIMPURDOCVH_STR-PLANT sy-vline 
WA_MMIMPURDOCVH_STR-ISCOMPLETELYDELIVERED sy-vline 
WA_MMIMPURDOCVH_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.