ABAP Select data from SAP table UPF_PARAM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM UPF_PARAM
*  INTO TABLE @DATA(IT_UPF_PARAM2).
*--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_UPF_PARAM INDEX 1 INTO DATA(WA_UPF_PARAM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<UPF_PARAM>-MANDT = 1.
<UPF_PARAM>-AREA = 1.
<UPF_PARAM>-PLEVEL = 1.
<UPF_PARAM>-METHOD = 1.
<UPF_PARAM>-PARAM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_UPF_PARAM-REFID, sy-vline,
  WA_UPF_PARAM-VUPDA, sy-vline,
  WA_UPF_PARAM-STORV, sy-vline,
  WA_UPF_PARAM-COUNTER, sy-vline,
  WA_UPF_PARAM-UNAME, sy-vline,
  WA_UPF_PARAM-AEDTM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_UPF_PARAM 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_UPF_PARAM 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_UPF_PARAM INTO WA_UPF_PARAM.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_UPF_PARAM_STR, 
MANDT TYPE STRING,
AREA TYPE STRING,
PLEVEL TYPE STRING,
METHOD TYPE STRING,
PARAM TYPE STRING,
REFID TYPE STRING,
VUPDA TYPE STRING,
STORV TYPE STRING,
COUNTER TYPE STRING,
UNAME TYPE STRING,
AEDTM TYPE STRING,
ATIME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_UPF_PARAM_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_UPF_PARAM_STR-MANDT sy-vline 
WA_UPF_PARAM_STR-AREA sy-vline 
WA_UPF_PARAM_STR-PLEVEL sy-vline 
WA_UPF_PARAM_STR-METHOD sy-vline 
WA_UPF_PARAM_STR-PARAM sy-vline 
WA_UPF_PARAM_STR-REFID sy-vline 
WA_UPF_PARAM_STR-VUPDA sy-vline 
WA_UPF_PARAM_STR-STORV sy-vline 
WA_UPF_PARAM_STR-COUNTER sy-vline 
WA_UPF_PARAM_STR-UNAME sy-vline 
WA_UPF_PARAM_STR-AEDTM sy-vline 
WA_UPF_PARAM_STR-ATIME sy-vline      INTO ld_text SEPARATED BY SPACE.

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