ABAP Select data from SAP table VFCLMMMPHALL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VFCLMMMPHALL
*  INTO TABLE @DATA(IT_VFCLMMMPHALL2).
*--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_VFCLMMMPHALL INDEX 1 INTO DATA(WA_VFCLMMMPHALL2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VFCLMMMPHALL-CONDITIONSTEP, sy-vline,
  WA_VFCLMMMPHALL-CONDITIONCOUNT, sy-vline,
  WA_VFCLMMMPHALL-COMPANYCODECURRENCY, sy-vline,
  WA_VFCLMMMPHALL-PURORDTRANSACTIONCURRENCY, sy-vline,
  WA_VFCLMMMPHALL-POSTINGDATE, sy-vline,
  WA_VFCLMMMPHALL-PURCHASEORDERHISTCATEGORY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VFCLMMMPHALL 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_VFCLMMMPHALL 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_VFCLMMMPHALL INTO WA_VFCLMMMPHALL.


*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_VFCLMMMPHALL-PURCHASINGDOCUMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VFCLMMMPHALL-PURCHASINGDOCUMENT.
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_VFCLMMMPHALL_STR, 
MANDT TYPE STRING,
PO_ITEM_CAT TYPE STRING,
PURCHASINGDOCUMENT TYPE STRING,
PURCHASINGDOCUMENTITEM TYPE STRING,
ACCOUNTASSIGNMENTNUMBER TYPE STRING,
CONDITIONSTEP TYPE STRING,
CONDITIONCOUNT TYPE STRING,
COMPANYCODECURRENCY TYPE STRING,
PURORDTRANSACTIONCURRENCY TYPE STRING,
POSTINGDATE TYPE STRING,
PURCHASEORDERHISTCATEGORY TYPE STRING,
PURCHASEORDERTRANSACTIONTYPE TYPE STRING,
PURCHASEORDERAMOUNTCOCODECRCY TYPE STRING,
TOTALINVOICEAMOUNTINCOCODECRCY TYPE STRING,
GOODSRECEIPTAMOUNTINCOCODECRCY TYPE STRING,
FINALCURRENCY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VFCLMMMPHALL_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_VFCLMMMPHALL_STR-MANDT sy-vline 
WA_VFCLMMMPHALL_STR-PO_ITEM_CAT sy-vline 
WA_VFCLMMMPHALL_STR-PURCHASINGDOCUMENT sy-vline 
WA_VFCLMMMPHALL_STR-PURCHASINGDOCUMENTITEM sy-vline 
WA_VFCLMMMPHALL_STR-ACCOUNTASSIGNMENTNUMBER sy-vline 
WA_VFCLMMMPHALL_STR-CONDITIONSTEP sy-vline 
WA_VFCLMMMPHALL_STR-CONDITIONCOUNT sy-vline 
WA_VFCLMMMPHALL_STR-COMPANYCODECURRENCY sy-vline 
WA_VFCLMMMPHALL_STR-PURORDTRANSACTIONCURRENCY sy-vline 
WA_VFCLMMMPHALL_STR-POSTINGDATE sy-vline 
WA_VFCLMMMPHALL_STR-PURCHASEORDERHISTCATEGORY sy-vline 
WA_VFCLMMMPHALL_STR-PURCHASEORDERTRANSACTIONTYPE sy-vline 
WA_VFCLMMMPHALL_STR-PURCHASEORDERAMOUNTCOCODECRCY sy-vline 
WA_VFCLMMMPHALL_STR-TOTALINVOICEAMOUNTINCOCODECRCY sy-vline 
WA_VFCLMMMPHALL_STR-GOODSRECEIPTAMOUNTINCOCODECRCY sy-vline 
WA_VFCLMMMPHALL_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.