ABAP Select data from SAP table ENH_CWB_INTF into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ENH_CWB_INTF
*  INTO TABLE @DATA(IT_ENH_CWB_INTF2).
*--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_ENH_CWB_INTF INDEX 1 INTO DATA(WA_ENH_CWB_INTF2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ENH_CWB_INTF>-CONTENT_TAB = 1.
<ENH_CWB_INTF>-HOOK_VERW = 1.
<ENH_CWB_INTF>-HOOK_SOURCE = 1.
<ENH_CWB_INTF>-HOOK_INCINX = 1.
<ENH_CWB_INTF>-CINC_INCINX = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ENH_CWB_INTF-CLAS_VERW, sy-vline,
  WA_ENH_CWB_INTF-CLAS_ATTR, sy-vline,
  WA_ENH_CWB_INTF-CLAS_METH, sy-vline,
  WA_ENH_CWB_INTF-CLAS_PREM, sy-vline,
  WA_ENH_CWB_INTF-CLAS_POST, sy-vline,
  WA_ENH_CWB_INTF-CLAS_INCINX, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ENH_CWB_INTF 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_ENH_CWB_INTF 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_ENH_CWB_INTF INTO WA_ENH_CWB_INTF.


*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_ENH_CWB_INTF_STR, 
CONTENT_TAB TYPE STRING,
HOOK_VERW TYPE STRING,
HOOK_SOURCE TYPE STRING,
HOOK_INCINX TYPE STRING,
CINC_INCINX TYPE STRING,
CLAS_VERW TYPE STRING,
CLAS_ATTR TYPE STRING,
CLAS_METH TYPE STRING,
CLAS_PREM TYPE STRING,
CLAS_POST TYPE STRING,
CLAS_INCINX TYPE STRING,
CLAS_NEWM_EXCL TYPE STRING,
CLAS_NEWM_PAR TYPE STRING,
CLAS_NEWM_DATA TYPE STRING,
CLAS_METH_SRC TYPE STRING,
CLAS_EIMP_SRC TYPE STRING,
CLAS_METH_INCLS TYPE STRING,
CLAS_EVENTS TYPE STRING,
CLAS_EV_PARAM TYPE STRING,
CLAS_IMPL TYPE STRING,
CLAS_OWRM TYPE STRING,
CLAS_TYPES TYPE STRING,
FUGR_P_IMP TYPE STRING,
FUGR_P_EXP TYPE STRING,
FUGR_P_CHA TYPE STRING,
FUGR_P_TAB TYPE STRING,
FUGR_FUPARA TYPE STRING,
FUGR_P_DOKU TYPE STRING,
FUGR_INCINX TYPE STRING,
FUGR_DOKU TYPE STRING,
TEXT_TAB TYPE STRING,
LONG_TEXT_TAB TYPE STRING,
TEXT_HEADER TYPE STRING,
BADI_IMPL_DATA TYPE STRING,
BADI_FLT_ROOT TYPE STRING,
BADI_FLT_TREE TYPE STRING,
BADI_FLT_VALUES TYPE STRING,
BADI_IMPL_FLT TYPE STRING,
BADI_FCODE_EXT TYPE STRING,
BADI_SCREEN_EXT TYPE STRING,
WDY_VERW TYPE STRING,
WDY_CUSAG TYPE STRING,
WDY_CTUSE TYPE STRING,
WDY_CTMAP TYPE STRING,
WDYC TYPE STRING,
WDYC_CNODE TYPE STRING,
WDYC_CATTR TYPE STRING,
WDYC_CUSAG TYPE STRING,
WDYC_CMAPP TYPE STRING,
WDYC_CCOMP TYPE STRING,
WDYC_CCOMS TYPE STRING,
WDYC_NEW_CODE TYPE STRING,
WDYC_CPARA TYPE STRING,
WDYC_CCOMT TYPE STRING,
WDYC_CPART TYPE STRING,
WDYC_EXCP TYPE STRING,
WDYC_EXCPT TYPE STRING,
WDYC_DEFIN TYPE STRING,
WDYC_DESCR TYPE STRING,
WDYV TYPE STRING,
WDYV_UIELE TYPE STRING,
WDYV_UISTATE TYPE STRING,
WDYV_UIPRP TYPE STRING,
WDYV_UIPRPT TYPE STRING,
WDYV_UICON TYPE STRING,
WDYV_UIDDC TYPE STRING,
WDYV_UIEVT TYPE STRING,
WDYV_IBPLG TYPE STRING,
WDYV_PLPAR TYPE STRING,
WDYV_IBPLT TYPE STRING,
WDYV_PLPRT TYPE STRING,
WDYV_NAVIL TYPE STRING,
WDYV_NAVIT TYPE STRING,
WDYV_NTSTATE TYPE STRING,
WDYV_VCONT TYPE STRING,
WDYV_VSHNO TYPE STRING,
WDYV_VSHPL TYPE STRING,
WDYV_DEFIN TYPE STRING,
WDYV_DESCR TYPE STRING,
WDYV_SOUSE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ENH_CWB_INTF_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_ENH_CWB_INTF_STR-CONTENT_TAB sy-vline 
WA_ENH_CWB_INTF_STR-HOOK_VERW sy-vline 
WA_ENH_CWB_INTF_STR-HOOK_SOURCE sy-vline 
WA_ENH_CWB_INTF_STR-HOOK_INCINX sy-vline 
WA_ENH_CWB_INTF_STR-CINC_INCINX sy-vline 
WA_ENH_CWB_INTF_STR-CLAS_VERW sy-vline 
WA_ENH_CWB_INTF_STR-CLAS_ATTR sy-vline 
WA_ENH_CWB_INTF_STR-CLAS_METH sy-vline 
WA_ENH_CWB_INTF_STR-CLAS_PREM sy-vline 
WA_ENH_CWB_INTF_STR-CLAS_POST sy-vline 
WA_ENH_CWB_INTF_STR-CLAS_INCINX sy-vline 
WA_ENH_CWB_INTF_STR-CLAS_NEWM_EXCL sy-vline 
WA_ENH_CWB_INTF_STR-CLAS_NEWM_PAR sy-vline 
WA_ENH_CWB_INTF_STR-CLAS_NEWM_DATA sy-vline 
WA_ENH_CWB_INTF_STR-CLAS_METH_SRC sy-vline 
WA_ENH_CWB_INTF_STR-CLAS_EIMP_SRC sy-vline 
WA_ENH_CWB_INTF_STR-CLAS_METH_INCLS sy-vline 
WA_ENH_CWB_INTF_STR-CLAS_EVENTS sy-vline 
WA_ENH_CWB_INTF_STR-CLAS_EV_PARAM sy-vline 
WA_ENH_CWB_INTF_STR-CLAS_IMPL sy-vline 
WA_ENH_CWB_INTF_STR-CLAS_OWRM sy-vline 
WA_ENH_CWB_INTF_STR-CLAS_TYPES sy-vline 
WA_ENH_CWB_INTF_STR-FUGR_P_IMP sy-vline 
WA_ENH_CWB_INTF_STR-FUGR_P_EXP sy-vline 
WA_ENH_CWB_INTF_STR-FUGR_P_CHA sy-vline 
WA_ENH_CWB_INTF_STR-FUGR_P_TAB sy-vline 
WA_ENH_CWB_INTF_STR-FUGR_FUPARA sy-vline 
WA_ENH_CWB_INTF_STR-FUGR_P_DOKU sy-vline 
WA_ENH_CWB_INTF_STR-FUGR_INCINX sy-vline 
WA_ENH_CWB_INTF_STR-FUGR_DOKU sy-vline 
WA_ENH_CWB_INTF_STR-TEXT_TAB sy-vline 
WA_ENH_CWB_INTF_STR-LONG_TEXT_TAB sy-vline 
WA_ENH_CWB_INTF_STR-TEXT_HEADER sy-vline 
WA_ENH_CWB_INTF_STR-BADI_IMPL_DATA sy-vline 
WA_ENH_CWB_INTF_STR-BADI_FLT_ROOT sy-vline 
WA_ENH_CWB_INTF_STR-BADI_FLT_TREE sy-vline 
WA_ENH_CWB_INTF_STR-BADI_FLT_VALUES sy-vline 
WA_ENH_CWB_INTF_STR-BADI_IMPL_FLT sy-vline 
WA_ENH_CWB_INTF_STR-BADI_FCODE_EXT sy-vline 
WA_ENH_CWB_INTF_STR-BADI_SCREEN_EXT sy-vline 
WA_ENH_CWB_INTF_STR-WDY_VERW sy-vline 
WA_ENH_CWB_INTF_STR-WDY_CUSAG sy-vline 
WA_ENH_CWB_INTF_STR-WDY_CTUSE sy-vline 
WA_ENH_CWB_INTF_STR-WDY_CTMAP sy-vline 
WA_ENH_CWB_INTF_STR-WDYC sy-vline 
WA_ENH_CWB_INTF_STR-WDYC_CNODE sy-vline 
WA_ENH_CWB_INTF_STR-WDYC_CATTR sy-vline 
WA_ENH_CWB_INTF_STR-WDYC_CUSAG sy-vline 
WA_ENH_CWB_INTF_STR-WDYC_CMAPP sy-vline 
WA_ENH_CWB_INTF_STR-WDYC_CCOMP sy-vline 
WA_ENH_CWB_INTF_STR-WDYC_CCOMS sy-vline 
WA_ENH_CWB_INTF_STR-WDYC_NEW_CODE sy-vline 
WA_ENH_CWB_INTF_STR-WDYC_CPARA sy-vline 
WA_ENH_CWB_INTF_STR-WDYC_CCOMT sy-vline 
WA_ENH_CWB_INTF_STR-WDYC_CPART sy-vline 
WA_ENH_CWB_INTF_STR-WDYC_EXCP sy-vline 
WA_ENH_CWB_INTF_STR-WDYC_EXCPT sy-vline 
WA_ENH_CWB_INTF_STR-WDYC_DEFIN sy-vline 
WA_ENH_CWB_INTF_STR-WDYC_DESCR sy-vline 
WA_ENH_CWB_INTF_STR-WDYV sy-vline 
WA_ENH_CWB_INTF_STR-WDYV_UIELE sy-vline 
WA_ENH_CWB_INTF_STR-WDYV_UISTATE sy-vline 
WA_ENH_CWB_INTF_STR-WDYV_UIPRP sy-vline 
WA_ENH_CWB_INTF_STR-WDYV_UIPRPT sy-vline 
WA_ENH_CWB_INTF_STR-WDYV_UICON sy-vline 
WA_ENH_CWB_INTF_STR-WDYV_UIDDC sy-vline 
WA_ENH_CWB_INTF_STR-WDYV_UIEVT sy-vline 
WA_ENH_CWB_INTF_STR-WDYV_IBPLG sy-vline 
WA_ENH_CWB_INTF_STR-WDYV_PLPAR sy-vline 
WA_ENH_CWB_INTF_STR-WDYV_IBPLT sy-vline 
WA_ENH_CWB_INTF_STR-WDYV_PLPRT sy-vline 
WA_ENH_CWB_INTF_STR-WDYV_NAVIL sy-vline 
WA_ENH_CWB_INTF_STR-WDYV_NAVIT sy-vline 
WA_ENH_CWB_INTF_STR-WDYV_NTSTATE sy-vline 
WA_ENH_CWB_INTF_STR-WDYV_VCONT sy-vline 
WA_ENH_CWB_INTF_STR-WDYV_VSHNO sy-vline 
WA_ENH_CWB_INTF_STR-WDYV_VSHPL sy-vline 
WA_ENH_CWB_INTF_STR-WDYV_DEFIN sy-vline 
WA_ENH_CWB_INTF_STR-WDYV_DESCR sy-vline 
WA_ENH_CWB_INTF_STR-WDYV_SOUSE sy-vline      INTO ld_text SEPARATED BY SPACE.

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