ABAP Select data from SAP table EFGGEN into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EFGGEN
*  INTO TABLE @DATA(IT_EFGGEN2).
*--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_EFGGEN INDEX 1 INTO DATA(WA_EFGGEN2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EFGGEN>-KENNZX = 1.
<EFGGEN>-OKCODE = 1.
<EFGGEN>-MENUTEXT = 1.
<EFGGEN>-EXIT_TYPE = 1.
<EFGGEN>-TITLE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EFGGEN-WMODE, sy-vline,
  WA_EFGGEN-SELECTMODE, sy-vline,
  WA_EFGGEN-HANDLE, sy-vline,
  WA_EFGGEN-OBJTYPE, sy-vline,
  WA_EFGGEN-OBJKEY, sy-vline,
  WA_EFGGEN-ELEMENT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EFGGEN 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_EFGGEN 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_EFGGEN INTO WA_EFGGEN.


*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_EFGGEN_STR, 
KENNZX TYPE STRING,
OKCODE TYPE STRING,
MENUTEXT TYPE STRING,
EXIT_TYPE TYPE STRING,
TITLE TYPE STRING,
WMODE TYPE STRING,
SELECTMODE TYPE STRING,
HANDLE TYPE STRING,
OBJTYPE TYPE STRING,
OBJKEY TYPE STRING,
ELEMENT TYPE STRING,
METHOD TYPE STRING,
ATTRIB TYPE STRING,
EVENT TYPE STRING,
DESCRIPT TYPE STRING,
SHORTTEXT TYPE STRING,
LONGTEXT TYPE STRING,
KEYTEXT TYPE STRING,
TYPETEXT TYPE STRING,
TEXTLINE TYPE STRING,
TEXTLEN TYPE STRING,
VALUE TYPE STRING,
COMPONENT TYPE STRING,
ICON TYPE STRING,
ICONTEXT TYPE STRING,
BCONTFATTR TYPE STRING,
ACTSTAT TYPE STRING,
NOTELINE TYPE STRING,
KEY10 TYPE STRING,
KEY20 TYPE STRING,
MAGIC_NAMESPC TYPE STRING,
MAGIC_EDIT_CNTXT TYPE STRING,
RNAME_SUFFIX TYPE STRING,
STATUS TYPE STRING,
FOPROCSTAT TYPE STRING,
ACTVITYTXT TYPE STRING,
ACTNAME TYPE STRING,
LONGVALUE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EFGGEN_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_EFGGEN_STR-KENNZX sy-vline 
WA_EFGGEN_STR-OKCODE sy-vline 
WA_EFGGEN_STR-MENUTEXT sy-vline 
WA_EFGGEN_STR-EXIT_TYPE sy-vline 
WA_EFGGEN_STR-TITLE sy-vline 
WA_EFGGEN_STR-WMODE sy-vline 
WA_EFGGEN_STR-SELECTMODE sy-vline 
WA_EFGGEN_STR-HANDLE sy-vline 
WA_EFGGEN_STR-OBJTYPE sy-vline 
WA_EFGGEN_STR-OBJKEY sy-vline 
WA_EFGGEN_STR-ELEMENT sy-vline 
WA_EFGGEN_STR-METHOD sy-vline 
WA_EFGGEN_STR-ATTRIB sy-vline 
WA_EFGGEN_STR-EVENT sy-vline 
WA_EFGGEN_STR-DESCRIPT sy-vline 
WA_EFGGEN_STR-SHORTTEXT sy-vline 
WA_EFGGEN_STR-LONGTEXT sy-vline 
WA_EFGGEN_STR-KEYTEXT sy-vline 
WA_EFGGEN_STR-TYPETEXT sy-vline 
WA_EFGGEN_STR-TEXTLINE sy-vline 
WA_EFGGEN_STR-TEXTLEN sy-vline 
WA_EFGGEN_STR-VALUE sy-vline 
WA_EFGGEN_STR-COMPONENT sy-vline 
WA_EFGGEN_STR-ICON sy-vline 
WA_EFGGEN_STR-ICONTEXT sy-vline 
WA_EFGGEN_STR-BCONTFATTR sy-vline 
WA_EFGGEN_STR-ACTSTAT sy-vline 
WA_EFGGEN_STR-NOTELINE sy-vline 
WA_EFGGEN_STR-KEY10 sy-vline 
WA_EFGGEN_STR-KEY20 sy-vline 
WA_EFGGEN_STR-MAGIC_NAMESPC sy-vline 
WA_EFGGEN_STR-MAGIC_EDIT_CNTXT sy-vline 
WA_EFGGEN_STR-RNAME_SUFFIX sy-vline 
WA_EFGGEN_STR-STATUS sy-vline 
WA_EFGGEN_STR-FOPROCSTAT sy-vline 
WA_EFGGEN_STR-ACTVITYTXT sy-vline 
WA_EFGGEN_STR-ACTNAME sy-vline 
WA_EFGGEN_STR-LONGVALUE sy-vline      INTO ld_text SEPARATED BY SPACE.

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