ABAP Select data from SAP table DCXMLFUPAR into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DCXMLFUPAR
*  INTO TABLE @DATA(IT_DCXMLFUPAR2).
*--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_DCXMLFUPAR INDEX 1 INTO DATA(WA_DCXMLFUPAR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DCXMLFUPAR>-PARAM = 1.
<DCXMLFUPAR>-PARAMCLASS = 1.
<DCXMLFUPAR>-SPRAS = 1.
<DCXMLFUPAR>-STEXT = 1.
<DCXMLFUPAR>-PARPOS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DCXMLFUPAR-DEFLT, sy-vline,
  WA_DCXMLFUPAR-TYPES, sy-vline,
  WA_DCXMLFUPAR-OPTIONAL, sy-vline,
  WA_DCXMLFUPAR-REFERENCE, sy-vline,
  WA_DCXMLFUPAR-CHANGING, sy-vline,
  WA_DCXMLFUPAR-TYP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DCXMLFUPAR 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_DCXMLFUPAR 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_DCXMLFUPAR INTO WA_DCXMLFUPAR.


*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 ISOLA, internal->external for field SPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_DCXMLFUPAR-SPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DCXMLFUPAR-SPRAS.
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_DCXMLFUPAR_STR, 
PARAM TYPE STRING,
PARAMCLASS TYPE STRING,
SPRAS TYPE STRING,
STEXT TYPE STRING,
PARPOS TYPE STRING,
DEFLT TYPE STRING,
TYPES TYPE STRING,
OPTIONAL TYPE STRING,
REFERENCE TYPE STRING,
CHANGING TYPE STRING,
TYP TYPE STRING,
CLASS TYPE STRING,
REF_CLASS TYPE STRING,
LINE_OF TYPE STRING,
TABLE_OF TYPE STRING,
HAS_DBF TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DCXMLFUPAR_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_DCXMLFUPAR_STR-PARAM sy-vline 
WA_DCXMLFUPAR_STR-PARAMCLASS sy-vline 
WA_DCXMLFUPAR_STR-SPRAS sy-vline 
WA_DCXMLFUPAR_STR-STEXT sy-vline 
WA_DCXMLFUPAR_STR-PARPOS sy-vline 
WA_DCXMLFUPAR_STR-DEFLT sy-vline 
WA_DCXMLFUPAR_STR-TYPES sy-vline 
WA_DCXMLFUPAR_STR-OPTIONAL sy-vline 
WA_DCXMLFUPAR_STR-REFERENCE sy-vline 
WA_DCXMLFUPAR_STR-CHANGING sy-vline 
WA_DCXMLFUPAR_STR-TYP sy-vline 
WA_DCXMLFUPAR_STR-CLASS sy-vline 
WA_DCXMLFUPAR_STR-REF_CLASS sy-vline 
WA_DCXMLFUPAR_STR-LINE_OF sy-vline 
WA_DCXMLFUPAR_STR-TABLE_OF sy-vline 
WA_DCXMLFUPAR_STR-HAS_DBF sy-vline      INTO ld_text SEPARATED BY SPACE.

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