ABAP Select data from SAP table E2CUCOM into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP E2CUCOM 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 E2CUCOM. 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 E2CUCOM 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_E2CUCOM TYPE STANDARD TABLE OF E2CUCOM,
      WA_E2CUCOM TYPE E2CUCOM,
      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: <E2CUCOM> TYPE E2CUCOM.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E2CUCOM.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E2CUCOM
  INTO TABLE IT_E2CUCOM.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E2CUCOM
*  INTO TABLE @DATA(IT_E2CUCOM2).
*--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_E2CUCOM INDEX 1 INTO DATA(WA_E2CUCOM2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E2CUCOM ASSIGNING <E2CUCOM>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E2CUCOM>-MSGFN = 1.
<E2CUCOM>-C_PROFILE = 1.
<E2CUCOM>-CLASSTYPE = 1.
<E2CUCOM>-ORGAREAS = 1.
<E2CUCOM>-STATUS = 1.

ENDLOOP.

LOOP AT IT_E2CUCOM INTO WA_E2CUCOM.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E2CUCOM-BOMAPPL, sy-vline,
  WA_E2CUCOM-FLAVAILCH, sy-vline,
  WA_E2CUCOM-BOMEXPL, sy-vline,
  WA_E2CUCOM-TASKLEXPL, sy-vline,
  WA_E2CUCOM-INITSCREEN, sy-vline,
  WA_E2CUCOM-FLASSEMBLY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E2CUCOM 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_E2CUCOM 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_E2CUCOM INTO WA_E2CUCOM.


*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_E2CUCOM_STR, 
MSGFN TYPE STRING,
C_PROFILE TYPE STRING,
CLASSTYPE TYPE STRING,
ORGAREAS TYPE STRING,
STATUS TYPE STRING,
BOMAPPL TYPE STRING,
FLAVAILCH TYPE STRING,
BOMEXPL TYPE STRING,
TASKLEXPL TYPE STRING,
INITSCREEN TYPE STRING,
FLASSEMBLY TYPE STRING,
FLRESULT TYPE STRING,
FLMDATA TYPE STRING,
FLCASONLY TYPE STRING,
FLMANCHANG TYPE STRING,
FLHOLDBOM TYPE STRING,
FLDELETE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E2CUCOM_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_E2CUCOM_STR-MSGFN sy-vline 
WA_E2CUCOM_STR-C_PROFILE sy-vline 
WA_E2CUCOM_STR-CLASSTYPE sy-vline 
WA_E2CUCOM_STR-ORGAREAS sy-vline 
WA_E2CUCOM_STR-STATUS sy-vline 
WA_E2CUCOM_STR-BOMAPPL sy-vline 
WA_E2CUCOM_STR-FLAVAILCH sy-vline 
WA_E2CUCOM_STR-BOMEXPL sy-vline 
WA_E2CUCOM_STR-TASKLEXPL sy-vline 
WA_E2CUCOM_STR-INITSCREEN sy-vline 
WA_E2CUCOM_STR-FLASSEMBLY sy-vline 
WA_E2CUCOM_STR-FLRESULT sy-vline 
WA_E2CUCOM_STR-FLMDATA sy-vline 
WA_E2CUCOM_STR-FLCASONLY sy-vline 
WA_E2CUCOM_STR-FLMANCHANG sy-vline 
WA_E2CUCOM_STR-FLHOLDBOM sy-vline 
WA_E2CUCOM_STR-FLDELETE sy-vline      INTO ld_text SEPARATED BY SPACE.

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