ABAP Select data from SAP table UATPL_S_PARAM into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP UATPL_S_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 UATPL_S_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 UATPL_S_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_UATPL_S_PARAM TYPE STANDARD TABLE OF UATPL_S_PARAM,
      WA_UATPL_S_PARAM TYPE UATPL_S_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: <UATPL_S_PARAM> TYPE UATPL_S_PARAM.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM UATPL_S_PARAM
*  INTO TABLE @DATA(IT_UATPL_S_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_UATPL_S_PARAM INDEX 1 INTO DATA(WA_UATPL_S_PARAM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<UATPL_S_PARAM>-ID = 1.
<UATPL_S_PARAM>-PLANT = 1.
<UATPL_S_PARAM>-MATNR = 1.
<UATPL_S_PARAM>-GAMNG = 1.
<UATPL_S_PARAM>-UNIT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_UATPL_S_PARAM-VERSN, sy-vline,
  WA_UATPL_S_PARAM-AUFLD, sy-vline,
  WA_UATPL_S_PARAM-DATAB, sy-vline,
  WA_UATPL_S_PARAM-DATBI, sy-vline,
  WA_UATPL_S_PARAM-KALSM, sy-vline,
  WA_UATPL_S_PARAM-ZSCHL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_UATPL_S_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_UATPL_S_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_UATPL_S_PARAM INTO WA_UATPL_S_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.

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

*Conversion exit CUNIT, internal->external for field UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_UATPL_S_PARAM-UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_UATPL_S_PARAM-UNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VERSN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_UATPL_S_PARAM-VERSN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_UATPL_S_PARAM-VERSN.
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_UATPL_S_PARAM_STR, 
ID TYPE STRING,
PLANT TYPE STRING,
MATNR TYPE STRING,
GAMNG TYPE STRING,
UNIT TYPE STRING,
VERSN TYPE STRING,
AUFLD TYPE STRING,
DATAB TYPE STRING,
DATBI TYPE STRING,
KALSM TYPE STRING,
ZSCHL TYPE STRING,
COSTMOD TYPE STRING,
COSTVAR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_UATPL_S_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_UATPL_S_PARAM_STR-ID sy-vline 
WA_UATPL_S_PARAM_STR-PLANT sy-vline 
WA_UATPL_S_PARAM_STR-MATNR sy-vline 
WA_UATPL_S_PARAM_STR-GAMNG sy-vline 
WA_UATPL_S_PARAM_STR-UNIT sy-vline 
WA_UATPL_S_PARAM_STR-VERSN sy-vline 
WA_UATPL_S_PARAM_STR-AUFLD sy-vline 
WA_UATPL_S_PARAM_STR-DATAB sy-vline 
WA_UATPL_S_PARAM_STR-DATBI sy-vline 
WA_UATPL_S_PARAM_STR-KALSM sy-vline 
WA_UATPL_S_PARAM_STR-ZSCHL sy-vline 
WA_UATPL_S_PARAM_STR-COSTMOD sy-vline 
WA_UATPL_S_PARAM_STR-COSTVAR sy-vline      INTO ld_text SEPARATED BY SPACE.

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