ABAP Select data from SAP table VFCLMMMEKKO into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VFCLMMMEKKO
*  INTO TABLE @DATA(IT_VFCLMMMEKKO2).
*--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_VFCLMMMEKKO INDEX 1 INTO DATA(WA_VFCLMMMEKKO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VFCLMMMEKKO>-MANDT = 1.
<VFCLMMMEKKO>-PURCHASINGDOCUMENT = 1.
<VFCLMMMEKKO>-PURCHASINGDOCUMENTCATEGORY = 1.
<VFCLMMMEKKO>-PURCHASINGDOCUMENTTYPE = 1.
<VFCLMMMEKKO>-PURCHASINGDOCUMENTSUBTYPE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VFCLMMMEKKO-COMPANYCODE, sy-vline,
  WA_VFCLMMMEKKO-PURCHASINGDOCUMENTDELETIONCODE, sy-vline,
  WA_VFCLMMMEKKO-PURCHASINGDOCUMENTORIGIN, sy-vline,
  WA_VFCLMMMEKKO-RELEASEISNOTCOMPLETED, sy-vline,
  WA_VFCLMMMEKKO-RELEASECODE, sy-vline,
  WA_VFCLMMMEKKO-CREATIONDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VFCLMMMEKKO 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_VFCLMMMEKKO 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_VFCLMMMEKKO INTO WA_VFCLMMMEKKO.


*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_VFCLMMMEKKO-PURCHASINGDOCUMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VFCLMMMEKKO-PURCHASINGDOCUMENT.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit EXCRT, internal->external for field EXCHANGERATE
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_VFCLMMMEKKO-EXCHANGERATE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VFCLMMMEKKO-EXCHANGERATE.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field PURCHASECONTRACT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VFCLMMMEKKO-PURCHASECONTRACT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VFCLMMMEKKO-PURCHASECONTRACT.
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_VFCLMMMEKKO_STR, 
MANDT TYPE STRING,
PURCHASINGDOCUMENT TYPE STRING,
PURCHASINGDOCUMENTCATEGORY TYPE STRING,
PURCHASINGDOCUMENTTYPE TYPE STRING,
PURCHASINGDOCUMENTSUBTYPE TYPE STRING,
COMPANYCODE TYPE STRING,
PURCHASINGDOCUMENTDELETIONCODE TYPE STRING,
PURCHASINGDOCUMENTORIGIN TYPE STRING,
RELEASEISNOTCOMPLETED TYPE STRING,
RELEASECODE TYPE STRING,
CREATIONDATE TYPE STRING,
CREATEDBYUSER TYPE STRING,
SUPPLIER TYPE STRING,
SUPPLIERRESPSALESPERSONNAME TYPE STRING,
SUPPLIERPHONENUMBER TYPE STRING,
SUPPLIERADDRESSID TYPE STRING,
MANUALSUPPLIERADDRESSID TYPE STRING,
PURCHASINGORGANIZATION TYPE STRING,
PURCHASINGGROUP TYPE STRING,
DOCUMENTCURRENCY TYPE STRING,
EXCHANGERATE TYPE STRING,
PURCHASINGDOCUMENTORDERDATE TYPE STRING,
SUPPLYINGSUPPLIER TYPE STRING,
SUPPLYINGPLANT TYPE STRING,
INVOICINGPARTY TYPE STRING,
PURCHASECONTRACT TYPE STRING,
PURCHASINGCOMPLETENESSSTATUS TYPE STRING,
INCOTERMSCLASSIFICATION TYPE STRING,
INCOTERMSTRANSFERLOCATION TYPE STRING,
PAYMENTTERMS TYPE STRING,
CASHDISCOUNT1DAYS TYPE STRING,
CASHDISCOUNT2DAYS TYPE STRING,
NETPAYMENTDAYS TYPE STRING,
CASHDISCOUNT1PERCENT TYPE STRING,
CASHDISCOUNT2PERCENT TYPE STRING,
PRICINGPROCEDURE TYPE STRING,
TARGETAMOUNT TYPE STRING,
PURCHASINGDOCUMENTCONDITION TYPE STRING,
VALIDITYSTARTDATE TYPE STRING,
VALIDITYENDDATE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VFCLMMMEKKO_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_VFCLMMMEKKO_STR-MANDT sy-vline 
WA_VFCLMMMEKKO_STR-PURCHASINGDOCUMENT sy-vline 
WA_VFCLMMMEKKO_STR-PURCHASINGDOCUMENTCATEGORY sy-vline 
WA_VFCLMMMEKKO_STR-PURCHASINGDOCUMENTTYPE sy-vline 
WA_VFCLMMMEKKO_STR-PURCHASINGDOCUMENTSUBTYPE sy-vline 
WA_VFCLMMMEKKO_STR-COMPANYCODE sy-vline 
WA_VFCLMMMEKKO_STR-PURCHASINGDOCUMENTDELETIONCODE sy-vline 
WA_VFCLMMMEKKO_STR-PURCHASINGDOCUMENTORIGIN sy-vline 
WA_VFCLMMMEKKO_STR-RELEASEISNOTCOMPLETED sy-vline 
WA_VFCLMMMEKKO_STR-RELEASECODE sy-vline 
WA_VFCLMMMEKKO_STR-CREATIONDATE sy-vline 
WA_VFCLMMMEKKO_STR-CREATEDBYUSER sy-vline 
WA_VFCLMMMEKKO_STR-SUPPLIER sy-vline 
WA_VFCLMMMEKKO_STR-SUPPLIERRESPSALESPERSONNAME sy-vline 
WA_VFCLMMMEKKO_STR-SUPPLIERPHONENUMBER sy-vline 
WA_VFCLMMMEKKO_STR-SUPPLIERADDRESSID sy-vline 
WA_VFCLMMMEKKO_STR-MANUALSUPPLIERADDRESSID sy-vline 
WA_VFCLMMMEKKO_STR-PURCHASINGORGANIZATION sy-vline 
WA_VFCLMMMEKKO_STR-PURCHASINGGROUP sy-vline 
WA_VFCLMMMEKKO_STR-DOCUMENTCURRENCY sy-vline 
WA_VFCLMMMEKKO_STR-EXCHANGERATE sy-vline 
WA_VFCLMMMEKKO_STR-PURCHASINGDOCUMENTORDERDATE sy-vline 
WA_VFCLMMMEKKO_STR-SUPPLYINGSUPPLIER sy-vline 
WA_VFCLMMMEKKO_STR-SUPPLYINGPLANT sy-vline 
WA_VFCLMMMEKKO_STR-INVOICINGPARTY sy-vline 
WA_VFCLMMMEKKO_STR-PURCHASECONTRACT sy-vline 
WA_VFCLMMMEKKO_STR-PURCHASINGCOMPLETENESSSTATUS sy-vline 
WA_VFCLMMMEKKO_STR-INCOTERMSCLASSIFICATION sy-vline 
WA_VFCLMMMEKKO_STR-INCOTERMSTRANSFERLOCATION sy-vline 
WA_VFCLMMMEKKO_STR-PAYMENTTERMS sy-vline 
WA_VFCLMMMEKKO_STR-CASHDISCOUNT1DAYS sy-vline 
WA_VFCLMMMEKKO_STR-CASHDISCOUNT2DAYS sy-vline 
WA_VFCLMMMEKKO_STR-NETPAYMENTDAYS sy-vline 
WA_VFCLMMMEKKO_STR-CASHDISCOUNT1PERCENT sy-vline 
WA_VFCLMMMEKKO_STR-CASHDISCOUNT2PERCENT sy-vline 
WA_VFCLMMMEKKO_STR-PRICINGPROCEDURE sy-vline 
WA_VFCLMMMEKKO_STR-TARGETAMOUNT sy-vline 
WA_VFCLMMMEKKO_STR-PURCHASINGDOCUMENTCONDITION sy-vline 
WA_VFCLMMMEKKO_STR-VALIDITYSTARTDATE sy-vline 
WA_VFCLMMMEKKO_STR-VALIDITYENDDATE sy-vline      INTO ld_text SEPARATED BY SPACE.

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