ABAP Select data from SAP table CWC__VH3 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CWC__VH3 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 CWC__VH3. 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 CWC__VH3 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_CWC__VH3 TYPE STANDARD TABLE OF CWC__VH3,
      WA_CWC__VH3 TYPE CWC__VH3,
      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: <CWC__VH3> TYPE CWC__VH3.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_CWC__VH3.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM CWC__VH3
  INTO TABLE IT_CWC__VH3.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CWC__VH3
*  INTO TABLE @DATA(IT_CWC__VH32).
*--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_CWC__VH3 INDEX 1 INTO DATA(WA_CWC__VH32).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_CWC__VH3 ASSIGNING <CWC__VH3>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CWC__VH3>-MANDT = 1.
<CWC__VH3>-WORKCENTERINTERNALID = 1.
<CWC__VH3>-WORKCENTERTYPECODE = 1.
<CWC__VH3>-WORKCENTER = 1.
<CWC__VH3>-WORKCENTERISTOBEDELETED = 1.

ENDLOOP.

LOOP AT IT_CWC__VH3 INTO WA_CWC__VH3.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CWC__VH3-WORKCENTERISLOCKED, sy-vline,
  WA_CWC__VH3-WORKCENTERISMNTNDFORCOSTING, sy-vline,
  WA_CWC__VH3-WORKCENTERISMNTNDFORSCHEDULING, sy-vline,
  WA_CWC__VH3-NUMBEROFCONFIRMATIONSLIPS, sy-vline,
  WA_CWC__VH3-WORKCENTERCATEGORYCODE, sy-vline,
  WA_CWC__VH3-WORKCENTERLOCATION, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CWC__VH3 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_CWC__VH3 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_CWC__VH3 INTO WA_CWC__VH3.


*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 WORKCENTERSTDQUEUEDURNUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CWC__VH3-WORKCENTERSTDQUEUEDURNUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CWC__VH3-WORKCENTERSTDQUEUEDURNUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field WORKCENTERMINIMUMQUEUEDURNUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CWC__VH3-WORKCENTERMINIMUMQUEUEDURNUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CWC__VH3-WORKCENTERMINIMUMQUEUEDURNUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field WORKCENTERSTANDARDWORKQTYUNIT1
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CWC__VH3-WORKCENTERSTANDARDWORKQTYUNIT1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CWC__VH3-WORKCENTERSTANDARDWORKQTYUNIT1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field WORKCENTERSTANDARDWORKQTYUNIT2
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CWC__VH3-WORKCENTERSTANDARDWORKQTYUNIT2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CWC__VH3-WORKCENTERSTANDARDWORKQTYUNIT2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field WORKCENTERSTANDARDWORKQTYUNIT3
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CWC__VH3-WORKCENTERSTANDARDWORKQTYUNIT3
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CWC__VH3-WORKCENTERSTANDARDWORKQTYUNIT3.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field WORKCENTERSTANDARDWORKQTYUNIT4
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CWC__VH3-WORKCENTERSTANDARDWORKQTYUNIT4
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CWC__VH3-WORKCENTERSTANDARDWORKQTYUNIT4.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field WORKCENTERSTANDARDWORKQTYUNIT5
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CWC__VH3-WORKCENTERSTANDARDWORKQTYUNIT5
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CWC__VH3-WORKCENTERSTANDARDWORKQTYUNIT5.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field WORKCENTERSTANDARDWORKQTYUNIT6
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CWC__VH3-WORKCENTERSTANDARDWORKQTYUNIT6
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CWC__VH3-WORKCENTERSTANDARDWORKQTYUNIT6.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field STANDARDWORKQUANTITYUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CWC__VH3-STANDARDWORKQUANTITYUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CWC__VH3-STANDARDWORKQUANTITYUNIT.
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_CWC__VH3_STR, 
MANDT TYPE STRING,
WORKCENTERINTERNALID TYPE STRING,
WORKCENTERTYPECODE TYPE STRING,
WORKCENTER TYPE STRING,
WORKCENTERISTOBEDELETED TYPE STRING,
WORKCENTERISLOCKED TYPE STRING,
WORKCENTERISMNTNDFORCOSTING TYPE STRING,
WORKCENTERISMNTNDFORSCHEDULING TYPE STRING,
NUMBEROFCONFIRMATIONSLIPS TYPE STRING,
WORKCENTERCATEGORYCODE TYPE STRING,
WORKCENTERLOCATION TYPE STRING,
WORKCENTERLOCATIONGROUP TYPE STRING,
WORKCENTERUSAGE TYPE STRING,
WORKCENTERRESPONSIBLE TYPE STRING,
PLANT TYPE STRING,
SUPPLYAREA TYPE STRING,
CAPACITYINTERNALID TYPE STRING,
MACHINETYPE TYPE STRING,
OPERATIONCONTROLPROFILE TYPE STRING,
MATLCOMPISMARKEDFORBACKFLUSH TYPE STRING,
WORKCENTERSETUPTYPE TYPE STRING,
FREEDEFINEDTABLEFIELDSEMANTIC TYPE STRING,
OBJECTINTERNALID TYPE STRING,
STANDARDTEXTINTERNALID TYPE STRING,
EMPLOYEEWAGETYPE TYPE STRING,
EMPLOYEEWAGEGROUP TYPE STRING,
EMPLOYEESUITABILITY TYPE STRING,
NUMBEROFTIMETICKETS TYPE STRING,
PLANVERSION TYPE STRING,
VALIDITYSTARTDATE TYPE STRING,
VALIDITYENDDATE TYPE STRING,
STANDARDTEXTIDISREFERENCED TYPE STRING,
EMPLOYEEWAGETYPEISREFERENCED TYPE STRING,
NMBROFTIMETICKETSISREFERENCED TYPE STRING,
EMPLOYEEWAGEGROUPISREFERENCED TYPE STRING,
EMPLSUITABILITYISREFERENCED TYPE STRING,
WORKCENTERSETPTYPEISREFERENCED TYPE STRING,
OPCONTROLPROFILEISREFERENCED TYPE STRING,
NUMBEROFCONFSLIPSISREFERENCED TYPE STRING,
WORKCENTERSTDQUEUEDURNUNIT TYPE STRING,
WORKCENTERSTANDARDQUEUEDURN TYPE STRING,
WORKCENTERMINIMUMQUEUEDURNUNIT TYPE STRING,
WORKCENTERMINIMUMQUEUEDURATION TYPE STRING,
WORKCENTERSTANDARDWORKQTYUNIT1 TYPE STRING,
WORKCENTERSTANDARDWORKQTYUNIT2 TYPE STRING,
WORKCENTERSTANDARDWORKQTYUNIT3 TYPE STRING,
WORKCENTERSTANDARDWORKQTYUNIT4 TYPE STRING,
WORKCENTERSTANDARDWORKQTYUNIT5 TYPE STRING,
WORKCENTERSTANDARDWORKQTYUNIT6 TYPE STRING,
STANDARDWORKQUANTITYUNIT TYPE STRING,
STANDARDWORKFORMULAPARAMGROUP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CWC__VH3_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_CWC__VH3_STR-MANDT sy-vline 
WA_CWC__VH3_STR-WORKCENTERINTERNALID sy-vline 
WA_CWC__VH3_STR-WORKCENTERTYPECODE sy-vline 
WA_CWC__VH3_STR-WORKCENTER sy-vline 
WA_CWC__VH3_STR-WORKCENTERISTOBEDELETED sy-vline 
WA_CWC__VH3_STR-WORKCENTERISLOCKED sy-vline 
WA_CWC__VH3_STR-WORKCENTERISMNTNDFORCOSTING sy-vline 
WA_CWC__VH3_STR-WORKCENTERISMNTNDFORSCHEDULING sy-vline 
WA_CWC__VH3_STR-NUMBEROFCONFIRMATIONSLIPS sy-vline 
WA_CWC__VH3_STR-WORKCENTERCATEGORYCODE sy-vline 
WA_CWC__VH3_STR-WORKCENTERLOCATION sy-vline 
WA_CWC__VH3_STR-WORKCENTERLOCATIONGROUP sy-vline 
WA_CWC__VH3_STR-WORKCENTERUSAGE sy-vline 
WA_CWC__VH3_STR-WORKCENTERRESPONSIBLE sy-vline 
WA_CWC__VH3_STR-PLANT sy-vline 
WA_CWC__VH3_STR-SUPPLYAREA sy-vline 
WA_CWC__VH3_STR-CAPACITYINTERNALID sy-vline 
WA_CWC__VH3_STR-MACHINETYPE sy-vline 
WA_CWC__VH3_STR-OPERATIONCONTROLPROFILE sy-vline 
WA_CWC__VH3_STR-MATLCOMPISMARKEDFORBACKFLUSH sy-vline 
WA_CWC__VH3_STR-WORKCENTERSETUPTYPE sy-vline 
WA_CWC__VH3_STR-FREEDEFINEDTABLEFIELDSEMANTIC sy-vline 
WA_CWC__VH3_STR-OBJECTINTERNALID sy-vline 
WA_CWC__VH3_STR-STANDARDTEXTINTERNALID sy-vline 
WA_CWC__VH3_STR-EMPLOYEEWAGETYPE sy-vline 
WA_CWC__VH3_STR-EMPLOYEEWAGEGROUP sy-vline 
WA_CWC__VH3_STR-EMPLOYEESUITABILITY sy-vline 
WA_CWC__VH3_STR-NUMBEROFTIMETICKETS sy-vline 
WA_CWC__VH3_STR-PLANVERSION sy-vline 
WA_CWC__VH3_STR-VALIDITYSTARTDATE sy-vline 
WA_CWC__VH3_STR-VALIDITYENDDATE sy-vline 
WA_CWC__VH3_STR-STANDARDTEXTIDISREFERENCED sy-vline 
WA_CWC__VH3_STR-EMPLOYEEWAGETYPEISREFERENCED sy-vline 
WA_CWC__VH3_STR-NMBROFTIMETICKETSISREFERENCED sy-vline 
WA_CWC__VH3_STR-EMPLOYEEWAGEGROUPISREFERENCED sy-vline 
WA_CWC__VH3_STR-EMPLSUITABILITYISREFERENCED sy-vline 
WA_CWC__VH3_STR-WORKCENTERSETPTYPEISREFERENCED sy-vline 
WA_CWC__VH3_STR-OPCONTROLPROFILEISREFERENCED sy-vline 
WA_CWC__VH3_STR-NUMBEROFCONFSLIPSISREFERENCED sy-vline 
WA_CWC__VH3_STR-WORKCENTERSTDQUEUEDURNUNIT sy-vline 
WA_CWC__VH3_STR-WORKCENTERSTANDARDQUEUEDURN sy-vline 
WA_CWC__VH3_STR-WORKCENTERMINIMUMQUEUEDURNUNIT sy-vline 
WA_CWC__VH3_STR-WORKCENTERMINIMUMQUEUEDURATION sy-vline 
WA_CWC__VH3_STR-WORKCENTERSTANDARDWORKQTYUNIT1 sy-vline 
WA_CWC__VH3_STR-WORKCENTERSTANDARDWORKQTYUNIT2 sy-vline 
WA_CWC__VH3_STR-WORKCENTERSTANDARDWORKQTYUNIT3 sy-vline 
WA_CWC__VH3_STR-WORKCENTERSTANDARDWORKQTYUNIT4 sy-vline 
WA_CWC__VH3_STR-WORKCENTERSTANDARDWORKQTYUNIT5 sy-vline 
WA_CWC__VH3_STR-WORKCENTERSTANDARDWORKQTYUNIT6 sy-vline 
WA_CWC__VH3_STR-STANDARDWORKQUANTITYUNIT sy-vline 
WA_CWC__VH3_STR-STANDARDWORKFORMULAPARAMGROUP sy-vline      INTO ld_text SEPARATED BY SPACE.

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