ABAP Select data from SAP table VDFS_ALLWNC_PLAN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VDFS_ALLWNC_PLAN
*  INTO TABLE @DATA(IT_VDFS_ALLWNC_PLAN2).
*--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_VDFS_ALLWNC_PLAN INDEX 1 INTO DATA(WA_VDFS_ALLWNC_PLAN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VDFS_ALLWNC_PLAN>-CLIENT = 1.
<VDFS_ALLWNC_PLAN>-DFSALLWNCPLANUUID = 1.
<VDFS_ALLWNC_PLAN>-DFSALLWNCPLANID = 1.
<VDFS_ALLWNC_PLAN>-DFSALLWNCPLANDESCRIPTION = 1.
<VDFS_ALLWNC_PLAN>-DFSALLWNCPLANVALDTYSTRTDATE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VDFS_ALLWNC_PLAN-DFSALLWNCPLANVALDTYENDDATE, sy-vline,
  WA_VDFS_ALLWNC_PLAN-FLXBLMATLPLNGOBJECTUUID, sy-vline,
  WA_VDFS_ALLWNC_PLAN-FLXBLMATLPLNGOBJECTID, sy-vline,
  WA_VDFS_ALLWNC_PLAN-FLXBLMATLPLNGOBJVARIANTUUID, sy-vline,
  WA_VDFS_ALLWNC_PLAN-FLXBLMATLPLNGOBJVARIANTID, sy-vline,
  WA_VDFS_ALLWNC_PLAN-PRODUCT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VDFS_ALLWNC_PLAN 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_VDFS_ALLWNC_PLAN 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_VDFS_ALLWNC_PLAN INTO WA_VDFS_ALLWNC_PLAN.


*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 MATN1, internal->external for field PRODUCT
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_VDFS_ALLWNC_PLAN-PRODUCT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VDFS_ALLWNC_PLAN-PRODUCT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field DFSALLWNCPLANQUANTITYUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_VDFS_ALLWNC_PLAN-DFSALLWNCPLANQUANTITYUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VDFS_ALLWNC_PLAN-DFSALLWNCPLANQUANTITYUNIT.
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_VDFS_ALLWNC_PLAN_STR, 
CLIENT TYPE STRING,
DFSALLWNCPLANUUID TYPE STRING,
DFSALLWNCPLANID TYPE STRING,
DFSALLWNCPLANDESCRIPTION TYPE STRING,
DFSALLWNCPLANVALDTYSTRTDATE TYPE STRING,
DFSALLWNCPLANVALDTYENDDATE TYPE STRING,
FLXBLMATLPLNGOBJECTUUID TYPE STRING,
FLXBLMATLPLNGOBJECTID TYPE STRING,
FLXBLMATLPLNGOBJVARIANTUUID TYPE STRING,
FLXBLMATLPLNGOBJVARIANTID TYPE STRING,
PRODUCT TYPE STRING,
DFSALLWNCPLANBASETYPE TYPE STRING,
DFSALLWNCPLANSTATUSPROFILE TYPE STRING,
DFSALLWNCPLANSTATUSOBJECT TYPE STRING,
DFSALLWNCPLANSTATUSCODE TYPE STRING,
FORCEELEMENTORGUUID TYPE STRING,
FORCEELEMENTORGID TYPE STRING,
DFSALLWNCPLANALLOWEDQUANTITY TYPE STRING,
DFSALLWNCPLANQUANTITYUNIT TYPE STRING,
FRCELMNTORGUSAGETYPE TYPE STRING,
DFSALLWNCPLANMULTILEVEL TYPE STRING,
DFSALLWNCPLANPREVIOUSPLANUUID TYPE STRING,
DFSALLWNCPLANISCOMPLETED TYPE STRING,
DFSALLWNCPLANCOMMENT TYPE STRING,
DFSALLWNCREQUUID TYPE STRING,
DFSALLWNCPLANCREATIONDATETIME TYPE STRING,
DFSALLWNCPLANCREATEDBYUSER TYPE STRING,
DFSALLWNCPLANCHANGEDATETIME TYPE STRING,
DFSALLWNCPLANLASTCHGDBYUSER TYPE STRING,
DUMMY_ALLWNC_PLAN_INCL_EEW_PS TYPE STRING,
KZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VDFS_ALLWNC_PLAN_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_VDFS_ALLWNC_PLAN_STR-CLIENT sy-vline 
WA_VDFS_ALLWNC_PLAN_STR-DFSALLWNCPLANUUID sy-vline 
WA_VDFS_ALLWNC_PLAN_STR-DFSALLWNCPLANID sy-vline 
WA_VDFS_ALLWNC_PLAN_STR-DFSALLWNCPLANDESCRIPTION sy-vline 
WA_VDFS_ALLWNC_PLAN_STR-DFSALLWNCPLANVALDTYSTRTDATE sy-vline 
WA_VDFS_ALLWNC_PLAN_STR-DFSALLWNCPLANVALDTYENDDATE sy-vline 
WA_VDFS_ALLWNC_PLAN_STR-FLXBLMATLPLNGOBJECTUUID sy-vline 
WA_VDFS_ALLWNC_PLAN_STR-FLXBLMATLPLNGOBJECTID sy-vline 
WA_VDFS_ALLWNC_PLAN_STR-FLXBLMATLPLNGOBJVARIANTUUID sy-vline 
WA_VDFS_ALLWNC_PLAN_STR-FLXBLMATLPLNGOBJVARIANTID sy-vline 
WA_VDFS_ALLWNC_PLAN_STR-PRODUCT sy-vline 
WA_VDFS_ALLWNC_PLAN_STR-DFSALLWNCPLANBASETYPE sy-vline 
WA_VDFS_ALLWNC_PLAN_STR-DFSALLWNCPLANSTATUSPROFILE sy-vline 
WA_VDFS_ALLWNC_PLAN_STR-DFSALLWNCPLANSTATUSOBJECT sy-vline 
WA_VDFS_ALLWNC_PLAN_STR-DFSALLWNCPLANSTATUSCODE sy-vline 
WA_VDFS_ALLWNC_PLAN_STR-FORCEELEMENTORGUUID sy-vline 
WA_VDFS_ALLWNC_PLAN_STR-FORCEELEMENTORGID sy-vline 
WA_VDFS_ALLWNC_PLAN_STR-DFSALLWNCPLANALLOWEDQUANTITY sy-vline 
WA_VDFS_ALLWNC_PLAN_STR-DFSALLWNCPLANQUANTITYUNIT sy-vline 
WA_VDFS_ALLWNC_PLAN_STR-FRCELMNTORGUSAGETYPE sy-vline 
WA_VDFS_ALLWNC_PLAN_STR-DFSALLWNCPLANMULTILEVEL sy-vline 
WA_VDFS_ALLWNC_PLAN_STR-DFSALLWNCPLANPREVIOUSPLANUUID sy-vline 
WA_VDFS_ALLWNC_PLAN_STR-DFSALLWNCPLANISCOMPLETED sy-vline 
WA_VDFS_ALLWNC_PLAN_STR-DFSALLWNCPLANCOMMENT sy-vline 
WA_VDFS_ALLWNC_PLAN_STR-DFSALLWNCREQUUID sy-vline 
WA_VDFS_ALLWNC_PLAN_STR-DFSALLWNCPLANCREATIONDATETIME sy-vline 
WA_VDFS_ALLWNC_PLAN_STR-DFSALLWNCPLANCREATEDBYUSER sy-vline 
WA_VDFS_ALLWNC_PLAN_STR-DFSALLWNCPLANCHANGEDATETIME sy-vline 
WA_VDFS_ALLWNC_PLAN_STR-DFSALLWNCPLANLASTCHGDBYUSER sy-vline 
WA_VDFS_ALLWNC_PLAN_STR-DUMMY_ALLWNC_PLAN_INCL_EEW_PS sy-vline 
WA_VDFS_ALLWNC_PLAN_STR-KZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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