ABAP Select data from SAP table EDX_SCREEN into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP EDX_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 EDX_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 EDX_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_EDX_SCREEN TYPE STANDARD TABLE OF EDX_SCREEN,
      WA_EDX_SCREEN TYPE EDX_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: <EDX_SCREEN> TYPE EDX_SCREEN.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EDX_SCREEN
*  INTO TABLE @DATA(IT_EDX_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_EDX_SCREEN INDEX 1 INTO DATA(WA_EDX_SCREEN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EDX_SCREEN>-BUKRS = 1.
<EDX_SCREEN>-SP_PID = 1.
<EDX_SCREEN>-SP_NAME = 1.
<EDX_SCREEN>-RB_AS_SELECTED = 1.
<EDX_SCREEN>-RB_1TAG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EDX_SCREEN-RB_1WOCHE, sy-vline,
  WA_EDX_SCREEN-RB_1MONAT, sy-vline,
  WA_EDX_SCREEN-CB_MSG_IN, sy-vline,
  WA_EDX_SCREEN-CB_MSG_OUT, sy-vline,
  WA_EDX_SCREEN-MAX_MSGS, sy-vline,
  WA_EDX_SCREEN-DATE_FROM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EDX_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_EDX_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_EDX_SCREEN INTO WA_EDX_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 ALPHA, internal->external for field SP_PID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EDX_SCREEN-SP_PID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EDX_SCREEN-SP_PID.
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_EDX_SCREEN_STR, 
BUKRS TYPE STRING,
SP_PID TYPE STRING,
SP_NAME TYPE STRING,
RB_AS_SELECTED TYPE STRING,
RB_1TAG TYPE STRING,
RB_1WOCHE TYPE STRING,
RB_1MONAT TYPE STRING,
CB_MSG_IN TYPE STRING,
CB_MSG_OUT TYPE STRING,
MAX_MSGS TYPE STRING,
DATE_FROM TYPE STRING,
DATE_TO TYPE STRING,
TIME_FROM TYPE STRING,
TIME_TO TYPE STRING,
START_LIST TYPE STRING,
P_SEL TYPE STRING,
P_TDY TYPE STRING,
P_TWK TYPE STRING,
P_TMT TYPE STRING,
P_ALL TYPE STRING,
P_XTEST TYPE STRING,
P_NOT_DELIVER TYPE STRING,
P_SUBMIT TYPE STRING,
P_READY TYPE STRING,
P_NO_FURT TYPE STRING,
P_NOT_PROC TYPE STRING,
P_ALL_STAT TYPE STRING,
P_TYPE_IDOC TYPE STRING,
P_TYPE_PDF TYPE STRING,
P_TYPE_VERIFY TYPE STRING,
P_TYPE_ISF TYPE STRING,
P_TYPE_P7S TYPE STRING,
P_O_NOTPROC TYPE STRING,
P_O_NOTDELIVER TYPE STRING,
P_O_SUBMIT TYPE STRING,
P_O_ARRIVED TYPE STRING,
P_O_PROC TYPE STRING,
P_O_READYSEND TYPE STRING,
P_I_READYLINK TYPE STRING,
P_I_PROC TYPE STRING,
MSG_TYPE TYPE STRING,
PARTNER_NAME TYPE STRING,
NOTE_TEXT TYPE STRING,
ORDER_NUMBER TYPE STRING,
P_I_PROCINIT TYPE STRING,
P_I_NOTPROC TYPE STRING,
P_I_READYPROC TYPE STRING,
P_I_PARTPROC TYPE STRING,
CB_SHOW_PROC_MSG TYPE STRING,
ERNAM TYPE STRING,
P_IN_PROC TYPE STRING,
P_ST_PROC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EDX_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_EDX_SCREEN_STR-BUKRS sy-vline 
WA_EDX_SCREEN_STR-SP_PID sy-vline 
WA_EDX_SCREEN_STR-SP_NAME sy-vline 
WA_EDX_SCREEN_STR-RB_AS_SELECTED sy-vline 
WA_EDX_SCREEN_STR-RB_1TAG sy-vline 
WA_EDX_SCREEN_STR-RB_1WOCHE sy-vline 
WA_EDX_SCREEN_STR-RB_1MONAT sy-vline 
WA_EDX_SCREEN_STR-CB_MSG_IN sy-vline 
WA_EDX_SCREEN_STR-CB_MSG_OUT sy-vline 
WA_EDX_SCREEN_STR-MAX_MSGS sy-vline 
WA_EDX_SCREEN_STR-DATE_FROM sy-vline 
WA_EDX_SCREEN_STR-DATE_TO sy-vline 
WA_EDX_SCREEN_STR-TIME_FROM sy-vline 
WA_EDX_SCREEN_STR-TIME_TO sy-vline 
WA_EDX_SCREEN_STR-START_LIST sy-vline 
WA_EDX_SCREEN_STR-P_SEL sy-vline 
WA_EDX_SCREEN_STR-P_TDY sy-vline 
WA_EDX_SCREEN_STR-P_TWK sy-vline 
WA_EDX_SCREEN_STR-P_TMT sy-vline 
WA_EDX_SCREEN_STR-P_ALL sy-vline 
WA_EDX_SCREEN_STR-P_XTEST sy-vline 
WA_EDX_SCREEN_STR-P_NOT_DELIVER sy-vline 
WA_EDX_SCREEN_STR-P_SUBMIT sy-vline 
WA_EDX_SCREEN_STR-P_READY sy-vline 
WA_EDX_SCREEN_STR-P_NO_FURT sy-vline 
WA_EDX_SCREEN_STR-P_NOT_PROC sy-vline 
WA_EDX_SCREEN_STR-P_ALL_STAT sy-vline 
WA_EDX_SCREEN_STR-P_TYPE_IDOC sy-vline 
WA_EDX_SCREEN_STR-P_TYPE_PDF sy-vline 
WA_EDX_SCREEN_STR-P_TYPE_VERIFY sy-vline 
WA_EDX_SCREEN_STR-P_TYPE_ISF sy-vline 
WA_EDX_SCREEN_STR-P_TYPE_P7S sy-vline 
WA_EDX_SCREEN_STR-P_O_NOTPROC sy-vline 
WA_EDX_SCREEN_STR-P_O_NOTDELIVER sy-vline 
WA_EDX_SCREEN_STR-P_O_SUBMIT sy-vline 
WA_EDX_SCREEN_STR-P_O_ARRIVED sy-vline 
WA_EDX_SCREEN_STR-P_O_PROC sy-vline 
WA_EDX_SCREEN_STR-P_O_READYSEND sy-vline 
WA_EDX_SCREEN_STR-P_I_READYLINK sy-vline 
WA_EDX_SCREEN_STR-P_I_PROC sy-vline 
WA_EDX_SCREEN_STR-MSG_TYPE sy-vline 
WA_EDX_SCREEN_STR-PARTNER_NAME sy-vline 
WA_EDX_SCREEN_STR-NOTE_TEXT sy-vline 
WA_EDX_SCREEN_STR-ORDER_NUMBER sy-vline 
WA_EDX_SCREEN_STR-P_I_PROCINIT sy-vline 
WA_EDX_SCREEN_STR-P_I_NOTPROC sy-vline 
WA_EDX_SCREEN_STR-P_I_READYPROC sy-vline 
WA_EDX_SCREEN_STR-P_I_PARTPROC sy-vline 
WA_EDX_SCREEN_STR-CB_SHOW_PROC_MSG sy-vline 
WA_EDX_SCREEN_STR-ERNAM sy-vline 
WA_EDX_SCREEN_STR-P_IN_PROC sy-vline 
WA_EDX_SCREEN_STR-P_ST_PROC sy-vline      INTO ld_text SEPARATED BY SPACE.

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