ABAP Select data from SAP table BBP_ENH_SCREEN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BBP_ENH_SCREEN
*  INTO TABLE @DATA(IT_BBP_ENH_SCREEN2).
*--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_BBP_ENH_SCREEN INDEX 1 INTO DATA(WA_BBP_ENH_SCREEN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BBP_ENH_SCREEN>-REPID = 1.
<BBP_ENH_SCREEN>-DYNNR = 1.
<BBP_ENH_SCREEN>-THEME = 1.
<BBP_ENH_SCREEN>-TEMPLATE = 1.
<BBP_ENH_SCREEN>-SERVICE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BBP_ENH_SCREEN-SERVICE, sy-vline,
  WA_BBP_ENH_SCREEN-CHKOUT, sy-vline,
  WA_BBP_ENH_SCREEN-CHKNEW, sy-vline,
  WA_BBP_ENH_SCREEN-CHKPATH, sy-vline,
  WA_BBP_ENH_SCREEN-CHKHOST, sy-vline,
  WA_BBP_ENH_SCREEN-CHNAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BBP_ENH_SCREEN 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_BBP_ENH_SCREEN 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_BBP_ENH_SCREEN INTO WA_BBP_ENH_SCREEN.


*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 MASTERLANG
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_BBP_ENH_SCREEN-MASTERLANG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BBP_ENH_SCREEN-MASTERLANG.
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_BBP_ENH_SCREEN_STR, 
REPID TYPE STRING,
DYNNR TYPE STRING,
THEME TYPE STRING,
TEMPLATE TYPE STRING,
SERVICE TYPE STRING,
SERVICE TYPE STRING,
CHKOUT TYPE STRING,
CHKNEW TYPE STRING,
CHKPATH TYPE STRING,
CHKHOST TYPE STRING,
CHNAME TYPE STRING,
TDATE TYPE STRING,
TTIME TYPE STRING,
MASTERLANG TYPE STRING,
MULTILANG TYPE STRING,
TRKORR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BBP_ENH_SCREEN_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_BBP_ENH_SCREEN_STR-REPID sy-vline 
WA_BBP_ENH_SCREEN_STR-DYNNR sy-vline 
WA_BBP_ENH_SCREEN_STR-THEME sy-vline 
WA_BBP_ENH_SCREEN_STR-TEMPLATE sy-vline 
WA_BBP_ENH_SCREEN_STR-SERVICE sy-vline 
WA_BBP_ENH_SCREEN_STR-SERVICE sy-vline 
WA_BBP_ENH_SCREEN_STR-CHKOUT sy-vline 
WA_BBP_ENH_SCREEN_STR-CHKNEW sy-vline 
WA_BBP_ENH_SCREEN_STR-CHKPATH sy-vline 
WA_BBP_ENH_SCREEN_STR-CHKHOST sy-vline 
WA_BBP_ENH_SCREEN_STR-CHNAME sy-vline 
WA_BBP_ENH_SCREEN_STR-TDATE sy-vline 
WA_BBP_ENH_SCREEN_STR-TTIME sy-vline 
WA_BBP_ENH_SCREEN_STR-MASTERLANG sy-vline 
WA_BBP_ENH_SCREEN_STR-MULTILANG sy-vline 
WA_BBP_ENH_SCREEN_STR-TRKORR sy-vline      INTO ld_text SEPARATED BY SPACE.

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