ABAP Select data from SAP table VFCLMMMIVP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VFCLMMMIVP
*  INTO TABLE @DATA(IT_VFCLMMMIVP2).
*--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_VFCLMMMIVP INDEX 1 INTO DATA(WA_VFCLMMMIVP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VFCLMMMIVP>-MANDT = 1.
<VFCLMMMIVP>-INVOICEPLANNUMBER = 1.
<VFCLMMMIVP>-INVOICEPLANITEM = 1.
<VFCLMMMIVP>-DATECATEGORY = 1.
<VFCLMMMIVP>-IPSETTLEMENTDATE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VFCLMMMIVP-IPCURRENCY, sy-vline,
  WA_VFCLMMMIVP-IPPERCENTAGE, sy-vline,
  WA_VFCLMMMIVP-IPBILLINGVALUE, sy-vline,
  WA_VFCLMMMIVP-IPPAYMENTTERMS, sy-vline,
  WA_VFCLMMMIVP-IPBILLINGDATE, sy-vline,
  WA_VFCLMMMIVP-POITEMNETAMOUNT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VFCLMMMIVP 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_VFCLMMMIVP 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_VFCLMMMIVP INTO WA_VFCLMMMIVP.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_VFCLMMMIVP_STR, 
MANDT TYPE STRING,
INVOICEPLANNUMBER TYPE STRING,
INVOICEPLANITEM TYPE STRING,
DATECATEGORY TYPE STRING,
IPSETTLEMENTDATE TYPE STRING,
IPCURRENCY TYPE STRING,
IPPERCENTAGE TYPE STRING,
IPBILLINGVALUE TYPE STRING,
IPPAYMENTTERMS TYPE STRING,
IPBILLINGDATE TYPE STRING,
POITEMNETAMOUNT TYPE STRING,
IPFINALINDICATOR TYPE STRING,
STATUS TYPE STRING,
FINALINDICATOR TYPE STRING,
BILLINGSTATUS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VFCLMMMIVP_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_VFCLMMMIVP_STR-MANDT sy-vline 
WA_VFCLMMMIVP_STR-INVOICEPLANNUMBER sy-vline 
WA_VFCLMMMIVP_STR-INVOICEPLANITEM sy-vline 
WA_VFCLMMMIVP_STR-DATECATEGORY sy-vline 
WA_VFCLMMMIVP_STR-IPSETTLEMENTDATE sy-vline 
WA_VFCLMMMIVP_STR-IPCURRENCY sy-vline 
WA_VFCLMMMIVP_STR-IPPERCENTAGE sy-vline 
WA_VFCLMMMIVP_STR-IPBILLINGVALUE sy-vline 
WA_VFCLMMMIVP_STR-IPPAYMENTTERMS sy-vline 
WA_VFCLMMMIVP_STR-IPBILLINGDATE sy-vline 
WA_VFCLMMMIVP_STR-POITEMNETAMOUNT sy-vline 
WA_VFCLMMMIVP_STR-IPFINALINDICATOR sy-vline 
WA_VFCLMMMIVP_STR-STATUS sy-vline 
WA_VFCLMMMIVP_STR-FINALINDICATOR sy-vline 
WA_VFCLMMMIVP_STR-BILLINGSTATUS sy-vline      INTO ld_text SEPARATED BY SPACE.

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