ABAP Select data from SAP table SMM_WFL_VH into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SMM_WFL_VH
*  INTO TABLE @DATA(IT_SMM_WFL_VH2).
*--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_SMM_WFL_VH INDEX 1 INTO DATA(WA_SMM_WFL_VH2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SMM_WFL_VH>-MANDT = 1.
<SMM_WFL_VH>-MMPURWORKFLOW = 1.
<SMM_WFL_VH>-COMPANYCODE = 1.
<SMM_WFL_VH>-PROCMTHUBCOMPANYCODE = 1.
<SMM_WFL_VH>-BECOMPANYCODE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SMM_WFL_VH-PURCHASINGGROUP, sy-vline,
  WA_SMM_WFL_VH-PURCHASINGORGANIZATION, sy-vline,
  WA_SMM_WFL_VH-BEPURCHASINGORGANIZATION, sy-vline,
  WA_SMM_WFL_VH-PROCMTHUBPURCHORG, sy-vline,
  WA_SMM_WFL_VH-MATERIALGROUP, sy-vline,
  WA_SMM_WFL_VH-PODOCTYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SMM_WFL_VH 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_SMM_WFL_VH 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_SMM_WFL_VH INTO WA_SMM_WFL_VH.


*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 CUNIT, internal->external for field UNITOFMEASURE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_SMM_WFL_VH-UNITOFMEASURE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SMM_WFL_VH-UNITOFMEASURE.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field PURCHASINGCATEGORY
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_SMM_WFL_VH-PURCHASINGCATEGORY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SMM_WFL_VH-PURCHASINGCATEGORY.
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_SMM_WFL_VH_STR, 
MANDT TYPE STRING,
MMPURWORKFLOW TYPE STRING,
COMPANYCODE TYPE STRING,
PROCMTHUBCOMPANYCODE TYPE STRING,
BECOMPANYCODE TYPE STRING,
PURCHASINGGROUP TYPE STRING,
PURCHASINGORGANIZATION TYPE STRING,
BEPURCHASINGORGANIZATION TYPE STRING,
PROCMTHUBPURCHORG TYPE STRING,
MATERIALGROUP TYPE STRING,
PODOCTYPE TYPE STRING,
SADOCTYPE TYPE STRING,
CTRDOCTYPE TYPE STRING,
CCTRDOCTYPE TYPE STRING,
HCTRDOCTYPE TYPE STRING,
PROCMTHUBCOMPANYCODEGROUPINGID TYPE STRING,
CURRENCY TYPE STRING,
PLANT TYPE STRING,
PROCMTHUBPLANT TYPE STRING,
BEPLANT TYPE STRING,
ACCASSGNMTCAT TYPE STRING,
UNITOFMEASURE TYPE STRING,
SUPLRQTNTYPE TYPE STRING,
RFQTYPE TYPE STRING,
FOLLOWONDOCCAT TYPE STRING,
FOLLOWONDOCTYPE TYPE STRING,
POUSER TYPE STRING,
CTRUSER TYPE STRING,
CCTRUSER TYPE STRING,
CPOUSER TYPE STRING,
RPLPRUSER TYPE STRING,
SESUSER TYPE STRING,
RFQUSER TYPE STRING,
SPUSER TYPE STRING,
QTNUSER TYPE STRING,
PRUSER TYPE STRING,
SAUSER TYPE STRING,
CATALOGID TYPE STRING,
DOCUMENTTYPE TYPE STRING,
CREATIONINDICATOR TYPE STRING,
PRACCASSGNMTCAT TYPE STRING,
SOURCESYSTEM TYPE STRING,
SUPPLIER TYPE STRING,
PURCHASINGCATEGORY TYPE STRING,
EXTERNALAPPROVALSTATUS TYPE STRING,
ACCTASSGMTCATCPR TYPE STRING,
PROCMTHUBPURCHASINGGROUP TYPE STRING,
PROCMTHUBACCTASSGMTCATEGORY TYPE STRING,
PROCMTHUBPRODUCTGROUP TYPE STRING,
PROCMTHUBPURGDOCITMCATEGORY TYPE STRING,
PROCMTHUBPURREQUISITIONTYPE TYPE STRING,
PERSONWORKAGREEMENT TYPE STRING,
SUPPLIERCOUNTRYGROUP TYPE STRING,
SRSLUSER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SMM_WFL_VH_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_SMM_WFL_VH_STR-MANDT sy-vline 
WA_SMM_WFL_VH_STR-MMPURWORKFLOW sy-vline 
WA_SMM_WFL_VH_STR-COMPANYCODE sy-vline 
WA_SMM_WFL_VH_STR-PROCMTHUBCOMPANYCODE sy-vline 
WA_SMM_WFL_VH_STR-BECOMPANYCODE sy-vline 
WA_SMM_WFL_VH_STR-PURCHASINGGROUP sy-vline 
WA_SMM_WFL_VH_STR-PURCHASINGORGANIZATION sy-vline 
WA_SMM_WFL_VH_STR-BEPURCHASINGORGANIZATION sy-vline 
WA_SMM_WFL_VH_STR-PROCMTHUBPURCHORG sy-vline 
WA_SMM_WFL_VH_STR-MATERIALGROUP sy-vline 
WA_SMM_WFL_VH_STR-PODOCTYPE sy-vline 
WA_SMM_WFL_VH_STR-SADOCTYPE sy-vline 
WA_SMM_WFL_VH_STR-CTRDOCTYPE sy-vline 
WA_SMM_WFL_VH_STR-CCTRDOCTYPE sy-vline 
WA_SMM_WFL_VH_STR-HCTRDOCTYPE sy-vline 
WA_SMM_WFL_VH_STR-PROCMTHUBCOMPANYCODEGROUPINGID sy-vline 
WA_SMM_WFL_VH_STR-CURRENCY sy-vline 
WA_SMM_WFL_VH_STR-PLANT sy-vline 
WA_SMM_WFL_VH_STR-PROCMTHUBPLANT sy-vline 
WA_SMM_WFL_VH_STR-BEPLANT sy-vline 
WA_SMM_WFL_VH_STR-ACCASSGNMTCAT sy-vline 
WA_SMM_WFL_VH_STR-UNITOFMEASURE sy-vline 
WA_SMM_WFL_VH_STR-SUPLRQTNTYPE sy-vline 
WA_SMM_WFL_VH_STR-RFQTYPE sy-vline 
WA_SMM_WFL_VH_STR-FOLLOWONDOCCAT sy-vline 
WA_SMM_WFL_VH_STR-FOLLOWONDOCTYPE sy-vline 
WA_SMM_WFL_VH_STR-POUSER sy-vline 
WA_SMM_WFL_VH_STR-CTRUSER sy-vline 
WA_SMM_WFL_VH_STR-CCTRUSER sy-vline 
WA_SMM_WFL_VH_STR-CPOUSER sy-vline 
WA_SMM_WFL_VH_STR-RPLPRUSER sy-vline 
WA_SMM_WFL_VH_STR-SESUSER sy-vline 
WA_SMM_WFL_VH_STR-RFQUSER sy-vline 
WA_SMM_WFL_VH_STR-SPUSER sy-vline 
WA_SMM_WFL_VH_STR-QTNUSER sy-vline 
WA_SMM_WFL_VH_STR-PRUSER sy-vline 
WA_SMM_WFL_VH_STR-SAUSER sy-vline 
WA_SMM_WFL_VH_STR-CATALOGID sy-vline 
WA_SMM_WFL_VH_STR-DOCUMENTTYPE sy-vline 
WA_SMM_WFL_VH_STR-CREATIONINDICATOR sy-vline 
WA_SMM_WFL_VH_STR-PRACCASSGNMTCAT sy-vline 
WA_SMM_WFL_VH_STR-SOURCESYSTEM sy-vline 
WA_SMM_WFL_VH_STR-SUPPLIER sy-vline 
WA_SMM_WFL_VH_STR-PURCHASINGCATEGORY sy-vline 
WA_SMM_WFL_VH_STR-EXTERNALAPPROVALSTATUS sy-vline 
WA_SMM_WFL_VH_STR-ACCTASSGMTCATCPR sy-vline 
WA_SMM_WFL_VH_STR-PROCMTHUBPURCHASINGGROUP sy-vline 
WA_SMM_WFL_VH_STR-PROCMTHUBACCTASSGMTCATEGORY sy-vline 
WA_SMM_WFL_VH_STR-PROCMTHUBPRODUCTGROUP sy-vline 
WA_SMM_WFL_VH_STR-PROCMTHUBPURGDOCITMCATEGORY sy-vline 
WA_SMM_WFL_VH_STR-PROCMTHUBPURREQUISITIONTYPE sy-vline 
WA_SMM_WFL_VH_STR-PERSONWORKAGREEMENT sy-vline 
WA_SMM_WFL_VH_STR-SUPPLIERCOUNTRYGROUP sy-vline 
WA_SMM_WFL_VH_STR-SRSLUSER sy-vline      INTO ld_text SEPARATED BY SPACE.

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