ABAP Select data from SAP table FC03DOW20 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP FC03DOW20 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 FC03DOW20. 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 FC03DOW20 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_FC03DOW20 TYPE STANDARD TABLE OF FC03DOW20,
      WA_FC03DOW20 TYPE FC03DOW20,
      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: <FC03DOW20> TYPE FC03DOW20.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_FC03DOW20.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM FC03DOW20
  INTO TABLE IT_FC03DOW20.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FC03DOW20
*  INTO TABLE @DATA(IT_FC03DOW202).
*--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_FC03DOW20 INDEX 1 INTO DATA(WA_FC03DOW202).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_FC03DOW20 ASSIGNING <FC03DOW20>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FC03DOW20>-RDIMEN = 1.
<FC03DOW20>-RVERS = 1.
<FC03DOW20>-RBUNIT = 1.
<FC03DOW20>-RYEAR = 1.
<FC03DOW20>-POPER = 1.

ENDLOOP.

LOOP AT IT_FC03DOW20 INTO WA_FC03DOW20.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FC03DOW20-RITCLG, sy-vline,
  WA_FC03DOW20-RITEM, sy-vline,
  WA_FC03DOW20-SITYP, sy-vline,
  WA_FC03DOW20-SUBIT, sy-vline,
  WA_FC03DOW20-RBUPTR, sy-vline,
  WA_FC03DOW20-RTCUR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FC03DOW20 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_FC03DOW20 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_FC03DOW20 INTO WA_FC03DOW20.


*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 RVERS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_FC03DOW20-RVERS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FC03DOW20-RVERS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AFIMC, internal->external for field RBUNIT
CALL FUNCTION 'CONVERSION_EXIT_AFIMC_OUTPUT'
  EXPORTING
    input =                      WA_FC03DOW20-RBUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FC03DOW20-RBUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field RYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_FC03DOW20-RYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FC03DOW20-RYEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit BFIMC, internal->external for field RITEM
CALL FUNCTION 'CONVERSION_EXIT_BFIMC_OUTPUT'
  EXPORTING
    input =                      WA_FC03DOW20-RITEM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FC03DOW20-RITEM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AFIMC, internal->external for field RBUPTR
CALL FUNCTION 'CONVERSION_EXIT_AFIMC_OUTPUT'
  EXPORTING
    input =                      WA_FC03DOW20-RBUPTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FC03DOW20-RBUPTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field RUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_FC03DOW20-RUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FC03DOW20-RUNIT.
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_FC03DOW20_STR, 
RDIMEN TYPE STRING,
RVERS TYPE STRING,
RBUNIT TYPE STRING,
RYEAR TYPE STRING,
POPER TYPE STRING,
RITCLG TYPE STRING,
RITEM TYPE STRING,
SITYP TYPE STRING,
SUBIT TYPE STRING,
RBUPTR TYPE STRING,
RTCUR TYPE STRING,
YRACQ TYPE STRING,
RUNIT TYPE STRING,
HW TYPE STRING,
TW TYPE STRING,
KW TYPE STRING,
ME TYPE STRING,
HW1 TYPE STRING,
TW1 TYPE STRING,
KW1 TYPE STRING,
ME1 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FC03DOW20_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_FC03DOW20_STR-RDIMEN sy-vline 
WA_FC03DOW20_STR-RVERS sy-vline 
WA_FC03DOW20_STR-RBUNIT sy-vline 
WA_FC03DOW20_STR-RYEAR sy-vline 
WA_FC03DOW20_STR-POPER sy-vline 
WA_FC03DOW20_STR-RITCLG sy-vline 
WA_FC03DOW20_STR-RITEM sy-vline 
WA_FC03DOW20_STR-SITYP sy-vline 
WA_FC03DOW20_STR-SUBIT sy-vline 
WA_FC03DOW20_STR-RBUPTR sy-vline 
WA_FC03DOW20_STR-RTCUR sy-vline 
WA_FC03DOW20_STR-YRACQ sy-vline 
WA_FC03DOW20_STR-RUNIT sy-vline 
WA_FC03DOW20_STR-HW sy-vline 
WA_FC03DOW20_STR-TW sy-vline 
WA_FC03DOW20_STR-KW sy-vline 
WA_FC03DOW20_STR-ME sy-vline 
WA_FC03DOW20_STR-HW1 sy-vline 
WA_FC03DOW20_STR-TW1 sy-vline 
WA_FC03DOW20_STR-KW1 sy-vline 
WA_FC03DOW20_STR-ME1 sy-vline      INTO ld_text SEPARATED BY SPACE.

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