ABAP Select data from SAP table CMMWBSELEMENT_VH into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CMMWBSELEMENT_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 CMMWBSELEMENT_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 CMMWBSELEMENT_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_CMMWBSELEMENT_VH TYPE STANDARD TABLE OF CMMWBSELEMENT_VH,
      WA_CMMWBSELEMENT_VH TYPE CMMWBSELEMENT_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: <CMMWBSELEMENT_VH> TYPE CMMWBSELEMENT_VH.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CMMWBSELEMENT_VH
*  INTO TABLE @DATA(IT_CMMWBSELEMENT_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_CMMWBSELEMENT_VH INDEX 1 INTO DATA(WA_CMMWBSELEMENT_VH2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CMMWBSELEMENT_VH>-MANDT = 1.
<CMMWBSELEMENT_VH>-WBSELEMENT = 1.
<CMMWBSELEMENT_VH>-WBSDESCRIPTION = 1.
<CMMWBSELEMENT_VH>-WBSELEMENTSHORTID = 1.
<CMMWBSELEMENT_VH>-PROJECTINTERNALID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CMMWBSELEMENT_VH-WBSELEMENTINTERNALID, sy-vline,
  WA_CMMWBSELEMENT_VH-RESPCOSTCENTERCONTROLLINGAREA, sy-vline,
  WA_CMMWBSELEMENT_VH-RESPONSIBLECOSTCENTER, sy-vline,
  WA_CMMWBSELEMENT_VH-PROFITCENTER, sy-vline,
  WA_CMMWBSELEMENT_VH-COMPANYCODE, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_CMMWBSELEMENT_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_CMMWBSELEMENT_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_CMMWBSELEMENT_VH INTO WA_CMMWBSELEMENT_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 ABPSN, internal->external for field WBSELEMENT
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_CMMWBSELEMENT_VH-WBSELEMENT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMMWBSELEMENT_VH-WBSELEMENT.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field PROFITCENTER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CMMWBSELEMENT_VH-PROFITCENTER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMMWBSELEMENT_VH-PROFITCENTER.
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_CMMWBSELEMENT_VH_STR, 
MANDT TYPE STRING,
WBSELEMENT TYPE STRING,
WBSDESCRIPTION TYPE STRING,
WBSELEMENTSHORTID TYPE STRING,
PROJECTINTERNALID TYPE STRING,
WBSELEMENTINTERNALID TYPE STRING,
RESPCOSTCENTERCONTROLLINGAREA TYPE STRING,
RESPONSIBLECOSTCENTER TYPE STRING,
PROFITCENTER TYPE STRING,
COMPANYCODE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CMMWBSELEMENT_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_CMMWBSELEMENT_VH_STR-MANDT sy-vline 
WA_CMMWBSELEMENT_VH_STR-WBSELEMENT sy-vline 
WA_CMMWBSELEMENT_VH_STR-WBSDESCRIPTION sy-vline 
WA_CMMWBSELEMENT_VH_STR-WBSELEMENTSHORTID sy-vline 
WA_CMMWBSELEMENT_VH_STR-PROJECTINTERNALID sy-vline 
WA_CMMWBSELEMENT_VH_STR-WBSELEMENTINTERNALID sy-vline 
WA_CMMWBSELEMENT_VH_STR-RESPCOSTCENTERCONTROLLINGAREA sy-vline 
WA_CMMWBSELEMENT_VH_STR-RESPONSIBLECOSTCENTER sy-vline 
WA_CMMWBSELEMENT_VH_STR-PROFITCENTER sy-vline 
WA_CMMWBSELEMENT_VH_STR-COMPANYCODE sy-vline      INTO ld_text SEPARATED BY SPACE.

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