ABAP Select data from SAP table VFCLMMMPHIALL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VFCLMMMPHIALL
*  INTO TABLE @DATA(IT_VFCLMMMPHIALL2).
*--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_VFCLMMMPHIALL INDEX 1 INTO DATA(WA_VFCLMMMPHIALL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VFCLMMMPHIALL>-MANDT = 1.
<VFCLMMMPHIALL>-PO_ITEM_CAT = 1.
<VFCLMMMPHIALL>-PURCHASINGDOCUMENT = 1.
<VFCLMMMPHIALL>-PURCHASINGDOCUMENTITEM = 1.
<VFCLMMMPHIALL>-ACCOUNTASSIGNMENTNUMBER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VFCLMMMPHIALL-CONDITIONSTEP, sy-vline,
  WA_VFCLMMMPHIALL-CONDITIONCOUNT, sy-vline,
  WA_VFCLMMMPHIALL-POSTINGDATE, sy-vline,
  WA_VFCLMMMPHIALL-PURCHASEORDERTRANSACTIONTYPE, sy-vline,
  WA_VFCLMMMPHIALL-PURCHASEORDERHISTCATEGORY, sy-vline,
  WA_VFCLMMMPHIALL-MATERIALGROUP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VFCLMMMPHIALL 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_VFCLMMMPHIALL 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_VFCLMMMPHIALL INTO WA_VFCLMMMPHIALL.


*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 PURCHASINGDOCUMENT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VFCLMMMPHIALL-PURCHASINGDOCUMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VFCLMMMPHIALL-PURCHASINGDOCUMENT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_VFCLMMMPHIALL-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VFCLMMMPHIALL-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_VFCLMMMPHIALL_STR, 
MANDT TYPE STRING,
PO_ITEM_CAT TYPE STRING,
PURCHASINGDOCUMENT TYPE STRING,
PURCHASINGDOCUMENTITEM TYPE STRING,
ACCOUNTASSIGNMENTNUMBER TYPE STRING,
CONDITIONSTEP TYPE STRING,
CONDITIONCOUNT TYPE STRING,
POSTINGDATE TYPE STRING,
PURCHASEORDERTRANSACTIONTYPE TYPE STRING,
PURCHASEORDERHISTCATEGORY TYPE STRING,
MATERIALGROUP TYPE STRING,
PLANT TYPE STRING,
COMPANYCODE TYPE STRING,
MATERIAL TYPE STRING,
PURCHASINGDOCUMENTCATEGORY TYPE STRING,
PURCHASINGDOCUMENTTYPE TYPE STRING,
PURCHASINGDOCUMENTITEMCATEGORY TYPE STRING,
ISFINALLYINVOICED TYPE STRING,
ISRETURNSITEM TYPE STRING,
PURCHASINGGROUP TYPE STRING,
DOCUMENTCURRENCY TYPE STRING,
INVOICEPLANNUMBER TYPE STRING,
COMPANYCODECURRENCY TYPE STRING,
PURCHASEORDERNETAMOUNT TYPE STRING,
NONDEDUCTIBLEINPUTTAX TYPE STRING,
GOODSRECEIPTAMOUNTINDSPCRCY TYPE STRING,
INVOICEAMTINDISPLAYCURRENCY TYPE STRING,
FINALCURRENCY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VFCLMMMPHIALL_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_VFCLMMMPHIALL_STR-MANDT sy-vline 
WA_VFCLMMMPHIALL_STR-PO_ITEM_CAT sy-vline 
WA_VFCLMMMPHIALL_STR-PURCHASINGDOCUMENT sy-vline 
WA_VFCLMMMPHIALL_STR-PURCHASINGDOCUMENTITEM sy-vline 
WA_VFCLMMMPHIALL_STR-ACCOUNTASSIGNMENTNUMBER sy-vline 
WA_VFCLMMMPHIALL_STR-CONDITIONSTEP sy-vline 
WA_VFCLMMMPHIALL_STR-CONDITIONCOUNT sy-vline 
WA_VFCLMMMPHIALL_STR-POSTINGDATE sy-vline 
WA_VFCLMMMPHIALL_STR-PURCHASEORDERTRANSACTIONTYPE sy-vline 
WA_VFCLMMMPHIALL_STR-PURCHASEORDERHISTCATEGORY sy-vline 
WA_VFCLMMMPHIALL_STR-MATERIALGROUP sy-vline 
WA_VFCLMMMPHIALL_STR-PLANT sy-vline 
WA_VFCLMMMPHIALL_STR-COMPANYCODE sy-vline 
WA_VFCLMMMPHIALL_STR-MATERIAL sy-vline 
WA_VFCLMMMPHIALL_STR-PURCHASINGDOCUMENTCATEGORY sy-vline 
WA_VFCLMMMPHIALL_STR-PURCHASINGDOCUMENTTYPE sy-vline 
WA_VFCLMMMPHIALL_STR-PURCHASINGDOCUMENTITEMCATEGORY sy-vline 
WA_VFCLMMMPHIALL_STR-ISFINALLYINVOICED sy-vline 
WA_VFCLMMMPHIALL_STR-ISRETURNSITEM sy-vline 
WA_VFCLMMMPHIALL_STR-PURCHASINGGROUP sy-vline 
WA_VFCLMMMPHIALL_STR-DOCUMENTCURRENCY sy-vline 
WA_VFCLMMMPHIALL_STR-INVOICEPLANNUMBER sy-vline 
WA_VFCLMMMPHIALL_STR-COMPANYCODECURRENCY sy-vline 
WA_VFCLMMMPHIALL_STR-PURCHASEORDERNETAMOUNT sy-vline 
WA_VFCLMMMPHIALL_STR-NONDEDUCTIBLEINPUTTAX sy-vline 
WA_VFCLMMMPHIALL_STR-GOODSRECEIPTAMOUNTINDSPCRCY sy-vline 
WA_VFCLMMMPHIALL_STR-INVOICEAMTINDISPLAYCURRENCY sy-vline 
WA_VFCLMMMPHIALL_STR-FINALCURRENCY sy-vline      INTO ld_text SEPARATED BY SPACE.

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