ABAP Select data from SAP table UPX_YS_KFS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM UPX_YS_KFS
*  INTO TABLE @DATA(IT_UPX_YS_KFS2).
*--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_UPX_YS_KFS INDEX 1 INTO DATA(WA_UPX_YS_KFS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<UPX_YS_KFS>-MARK = 1.
<UPX_YS_KFS>-COL = 1.
<UPX_YS_KFS>-KFSCOL = 1.
<UPX_YS_KFS>-LAYOUTTEXT = 1.
<UPX_YS_KFS>-OPERAND1 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_UPX_YS_KFS-OPERATOR, sy-vline,
  WA_UPX_YS_KFS-OPERAND2, sy-vline,
  WA_UPX_YS_KFS-KFSDESCRIPTION, sy-vline,
  WA_UPX_YS_KFS-CHANM, sy-vline,
  WA_UPX_YS_KFS-CHAVL, sy-vline,
  WA_UPX_YS_KFS-HIDDEN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_UPX_YS_KFS 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_UPX_YS_KFS 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_UPX_YS_KFS INTO WA_UPX_YS_KFS.


*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 FIXUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_UPX_YS_KFS-FIXUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_UPX_YS_KFS-FIXUNIT.
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_UPX_YS_KFS_STR, 
MARK TYPE STRING,
COL TYPE STRING,
KFSCOL TYPE STRING,
LAYOUTTEXT TYPE STRING,
OPERAND1 TYPE STRING,
OPERATOR TYPE STRING,
OPERAND2 TYPE STRING,
KFSDESCRIPTION TYPE STRING,
CHANM TYPE STRING,
CHAVL TYPE STRING,
HIDDEN TYPE STRING,
READONLY TYPE STRING,
DECIMALS TYPE STRING,
FIXUNIT TYPE STRING,
FIXCUKY TYPE STRING,
UNIT_CHA TYPE STRING,
OPERATOR_TEXT TYPE STRING,
CURR_TEXT TYPE STRING,
FIXUNIT_TEXT TYPE STRING,
FLAG_ADVF TYPE STRING,
FUNCNAME TYPE STRING,
KF_ICON TYPE STRING,
BDSFL TYPE STRING,
LISTBOX TYPE STRING,
OPERAND_FIX TYPE STRING,
OPERAND1_TEXT TYPE STRING,
OPERAND2_TEXT TYPE STRING,
POS TYPE STRING,
WIDTH TYPE STRING,
HIDE_UNIT_CHA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_UPX_YS_KFS_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_UPX_YS_KFS_STR-MARK sy-vline 
WA_UPX_YS_KFS_STR-COL sy-vline 
WA_UPX_YS_KFS_STR-KFSCOL sy-vline 
WA_UPX_YS_KFS_STR-LAYOUTTEXT sy-vline 
WA_UPX_YS_KFS_STR-OPERAND1 sy-vline 
WA_UPX_YS_KFS_STR-OPERATOR sy-vline 
WA_UPX_YS_KFS_STR-OPERAND2 sy-vline 
WA_UPX_YS_KFS_STR-KFSDESCRIPTION sy-vline 
WA_UPX_YS_KFS_STR-CHANM sy-vline 
WA_UPX_YS_KFS_STR-CHAVL sy-vline 
WA_UPX_YS_KFS_STR-HIDDEN sy-vline 
WA_UPX_YS_KFS_STR-READONLY sy-vline 
WA_UPX_YS_KFS_STR-DECIMALS sy-vline 
WA_UPX_YS_KFS_STR-FIXUNIT sy-vline 
WA_UPX_YS_KFS_STR-FIXCUKY sy-vline 
WA_UPX_YS_KFS_STR-UNIT_CHA sy-vline 
WA_UPX_YS_KFS_STR-OPERATOR_TEXT sy-vline 
WA_UPX_YS_KFS_STR-CURR_TEXT sy-vline 
WA_UPX_YS_KFS_STR-FIXUNIT_TEXT sy-vline 
WA_UPX_YS_KFS_STR-FLAG_ADVF sy-vline 
WA_UPX_YS_KFS_STR-FUNCNAME sy-vline 
WA_UPX_YS_KFS_STR-KF_ICON sy-vline 
WA_UPX_YS_KFS_STR-BDSFL sy-vline 
WA_UPX_YS_KFS_STR-LISTBOX sy-vline 
WA_UPX_YS_KFS_STR-OPERAND_FIX sy-vline 
WA_UPX_YS_KFS_STR-OPERAND1_TEXT sy-vline 
WA_UPX_YS_KFS_STR-OPERAND2_TEXT sy-vline 
WA_UPX_YS_KFS_STR-POS sy-vline 
WA_UPX_YS_KFS_STR-WIDTH sy-vline 
WA_UPX_YS_KFS_STR-HIDE_UNIT_CHA sy-vline      INTO ld_text SEPARATED BY SPACE.

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