ABAP Select data from SAP table /SCF/SCREEN_ELEMENTS_STR into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SCF/SCREEN_ELEMENTS_STR 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 /SCF/SCREEN_ELEMENTS_STR. 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 /SCF/SCREEN_ELEMENTS_STR 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_/SCF/SCREEN_ELEMENTS_STR TYPE STANDARD TABLE OF /SCF/SCREEN_ELEMENTS_STR,
      WA_/SCF/SCREEN_ELEMENTS_STR TYPE /SCF/SCREEN_ELEMENTS_STR,
      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: </SCF/SCREEN_ELEMENTS_STR> TYPE /SCF/SCREEN_ELEMENTS_STR.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SCF/SCREEN_ELEMENTS_STR
  INTO TABLE IT_/SCF/SCREEN_ELEMENTS_STR.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SCF/SCREEN_ELEMENTS_STR
*  INTO TABLE @DATA(IT_/SCF/SCREEN_ELEMENTS_STR2).
*--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_/SCF/SCREEN_ELEMENTS_STR INDEX 1 INTO DATA(WA_/SCF/SCREEN_ELEMENTS_STR2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SCF/SCREEN_ELEMENTS_STR ASSIGNING </SCF/SCREEN_ELEMENTS_STR>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SCF/SCREEN_ELEMENTS_STR>-APPID = 1.
</SCF/SCREEN_ELEMENTS_STR>-APPCLSS = 1.
</SCF/SCREEN_ELEMENTS_STR>-SCRID = 1.
</SCF/SCREEN_ELEMENTS_STR>-SCRREF = 1.
</SCF/SCREEN_ELEMENTS_STR>-CMPTTYPE = 1.

ENDLOOP.

LOOP AT IT_/SCF/SCREEN_ELEMENTS_STR INTO WA_/SCF/SCREEN_ELEMENTS_STR.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SCF/SCREEN_ELEMENTS_STR-ISCONTAINER, sy-vline,
  WA_/SCF/SCREEN_ELEMENTS_STR-PARENTID, sy-vline,
  WA_/SCF/SCREEN_ELEMENTS_STR-CMPTID, sy-vline,
  WA_/SCF/SCREEN_ELEMENTS_STR-CMPTREF, sy-vline,
  WA_/SCF/SCREEN_ELEMENTS_STR-SEQU, sy-vline,
  WA_/SCF/SCREEN_ELEMENTS_STR-COID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SCF/SCREEN_ELEMENTS_STR 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_/SCF/SCREEN_ELEMENTS_STR 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_/SCF/SCREEN_ELEMENTS_STR INTO WA_/SCF/SCREEN_ELEMENTS_STR.


*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 LANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_/SCF/SCREEN_ELEMENTS_STR-LANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SCF/SCREEN_ELEMENTS_STR-LANGUAGE.
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_/SCF/SCREEN_ELEMENTS_STR_STR, 
APPID TYPE STRING,
APPCLSS TYPE STRING,
SCRID TYPE STRING,
SCRREF TYPE STRING,
CMPTTYPE TYPE STRING,
ISCONTAINER TYPE STRING,
PARENTID TYPE STRING,
CMPTID TYPE STRING,
CMPTREF TYPE STRING,
SEQU TYPE STRING,
COID TYPE STRING,
COREF TYPE STRING,
DYNPRO_HEADER TYPE STRING,
PROGRAM TYPE STRING,
SCREEN TYPE STRING,
LANGUAGE TYPE STRING,
DESCRIPT TYPE STRING,
TYPE TYPE STRING,
NEXTSCREEN TYPE STRING,
CURSOR_POS TYPE STRING,
SCREEN_GRP TYPE STRING,
LINES TYPE STRING,
COLUMNS TYPE STRING,
HOLD_DATA TYPE STRING,
FIXED_FONT TYPE STRING,
NO_COMPR TYPE STRING,
NO_EXECUTE TYPE STRING,
KEEP_SCPOS TYPE STRING,
NO_TOOLBAR TYPE STRING,
CTX_MENON TYPE STRING,
FIORIENLARGEOFF TYPE STRING,
HASH TYPE STRING,
VERSION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SCF/SCREEN_ELEMENTS_STR_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_/SCF/SCREEN_ELEMENTS_STR_STR-APPID sy-vline 
WA_/SCF/SCREEN_ELEMENTS_STR_STR-APPCLSS sy-vline 
WA_/SCF/SCREEN_ELEMENTS_STR_STR-SCRID sy-vline 
WA_/SCF/SCREEN_ELEMENTS_STR_STR-SCRREF sy-vline 
WA_/SCF/SCREEN_ELEMENTS_STR_STR-CMPTTYPE sy-vline 
WA_/SCF/SCREEN_ELEMENTS_STR_STR-ISCONTAINER sy-vline 
WA_/SCF/SCREEN_ELEMENTS_STR_STR-PARENTID sy-vline 
WA_/SCF/SCREEN_ELEMENTS_STR_STR-CMPTID sy-vline 
WA_/SCF/SCREEN_ELEMENTS_STR_STR-CMPTREF sy-vline 
WA_/SCF/SCREEN_ELEMENTS_STR_STR-SEQU sy-vline 
WA_/SCF/SCREEN_ELEMENTS_STR_STR-COID sy-vline 
WA_/SCF/SCREEN_ELEMENTS_STR_STR-COREF sy-vline 
WA_/SCF/SCREEN_ELEMENTS_STR_STR-DYNPRO_HEADER sy-vline 
WA_/SCF/SCREEN_ELEMENTS_STR_STR-PROGRAM sy-vline 
WA_/SCF/SCREEN_ELEMENTS_STR_STR-SCREEN sy-vline 
WA_/SCF/SCREEN_ELEMENTS_STR_STR-LANGUAGE sy-vline 
WA_/SCF/SCREEN_ELEMENTS_STR_STR-DESCRIPT sy-vline 
WA_/SCF/SCREEN_ELEMENTS_STR_STR-TYPE sy-vline 
WA_/SCF/SCREEN_ELEMENTS_STR_STR-NEXTSCREEN sy-vline 
WA_/SCF/SCREEN_ELEMENTS_STR_STR-CURSOR_POS sy-vline 
WA_/SCF/SCREEN_ELEMENTS_STR_STR-SCREEN_GRP sy-vline 
WA_/SCF/SCREEN_ELEMENTS_STR_STR-LINES sy-vline 
WA_/SCF/SCREEN_ELEMENTS_STR_STR-COLUMNS sy-vline 
WA_/SCF/SCREEN_ELEMENTS_STR_STR-HOLD_DATA sy-vline 
WA_/SCF/SCREEN_ELEMENTS_STR_STR-FIXED_FONT sy-vline 
WA_/SCF/SCREEN_ELEMENTS_STR_STR-NO_COMPR sy-vline 
WA_/SCF/SCREEN_ELEMENTS_STR_STR-NO_EXECUTE sy-vline 
WA_/SCF/SCREEN_ELEMENTS_STR_STR-KEEP_SCPOS sy-vline 
WA_/SCF/SCREEN_ELEMENTS_STR_STR-NO_TOOLBAR sy-vline 
WA_/SCF/SCREEN_ELEMENTS_STR_STR-CTX_MENON sy-vline 
WA_/SCF/SCREEN_ELEMENTS_STR_STR-FIORIENLARGEOFF sy-vline 
WA_/SCF/SCREEN_ELEMENTS_STR_STR-HASH sy-vline 
WA_/SCF/SCREEN_ELEMENTS_STR_STR-VERSION sy-vline      INTO ld_text SEPARATED BY SPACE.

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