ABAP Select data from SAP table ENH_CWB_DELTA_ENHO_GENERAL 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_DELTA_ENHO_GENERAL 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_DELTA_ENHO_GENERAL. 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_DELTA_ENHO_GENERAL 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_DELTA_ENHO_GENERAL TYPE STANDARD TABLE OF ENH_CWB_DELTA_ENHO_GENERAL,
      WA_ENH_CWB_DELTA_ENHO_GENERAL TYPE ENH_CWB_DELTA_ENHO_GENERAL,
      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_DELTA_ENHO_GENERAL> TYPE ENH_CWB_DELTA_ENHO_GENERAL.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ENH_CWB_DELTA_ENHO_GENERAL
*  INTO TABLE @DATA(IT_ENH_CWB_DELTA_ENHO_GENERAL2).
*--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_DELTA_ENHO_GENERAL INDEX 1 INTO DATA(WA_ENH_CWB_DELTA_ENHO_GENERAL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ENH_CWB_DELTA_ENHO_GENERAL>-KEYNAME = 1.
<ENH_CWB_DELTA_ENHO_GENERAL>-KEYVALUE = 1.
<ENH_CWB_DELTA_ENHO_GENERAL>-HOOK = 1.
<ENH_CWB_DELTA_ENHO_GENERAL>-ENHTYPE = 1.
<ENH_CWB_DELTA_ENHO_GENERAL>-ENHNAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ENH_CWB_DELTA_ENHO_GENERAL-ENHTOOLTYPE, sy-vline,
  WA_ENH_CWB_DELTA_ENHO_GENERAL-MAIN_OBJ_TYPE, sy-vline,
  WA_ENH_CWB_DELTA_ENHO_GENERAL-MAIN_OBJ_NAME, sy-vline,
  WA_ENH_CWB_DELTA_ENHO_GENERAL-OBJ_TYPE, sy-vline,
  WA_ENH_CWB_DELTA_ENHO_GENERAL-OBJ_NAME, sy-vline,
  WA_ENH_CWB_DELTA_ENHO_GENERAL-MODUNIT_TYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ENH_CWB_DELTA_ENHO_GENERAL 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_DELTA_ENHO_GENERAL 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_DELTA_ENHO_GENERAL INTO WA_ENH_CWB_DELTA_ENHO_GENERAL.


*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_DELTA_ENHO_GENERAL_STR, 
KEYNAME TYPE STRING,
KEYVALUE TYPE STRING,
HOOK TYPE STRING,
ENHTYPE TYPE STRING,
ENHNAME TYPE STRING,
ENHTOOLTYPE TYPE STRING,
MAIN_OBJ_TYPE TYPE STRING,
MAIN_OBJ_NAME TYPE STRING,
OBJ_TYPE TYPE STRING,
OBJ_NAME TYPE STRING,
MODUNIT_TYPE TYPE STRING,
MODUNIT_NAME TYPE STRING,
INCLUDE TYPE STRING,
TYPE TYPE STRING,
PARAM_ATTR TYPE STRING,
DELTA TYPE STRING,
TABNAME TYPE STRING,
TABIX_OLD TYPE STRING,
TABIX_NEW TYPE STRING,
FLAGS TYPE STRING,
CONTRACT_BROKEN TYPE STRING,
COMPATIBLE_CHANGED TYPE STRING,
TRAFFIC_LIGHT TYPE STRING,
CHANGED_OBJ_TYPE TYPE STRING,
CHANGE_INDICATOR TYPE STRING,
BADI_NAME TYPE STRING,
INTERFACE_NAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ENH_CWB_DELTA_ENHO_GENERAL_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_DELTA_ENHO_GENERAL_STR-KEYNAME sy-vline 
WA_ENH_CWB_DELTA_ENHO_GENERAL_STR-KEYVALUE sy-vline 
WA_ENH_CWB_DELTA_ENHO_GENERAL_STR-HOOK sy-vline 
WA_ENH_CWB_DELTA_ENHO_GENERAL_STR-ENHTYPE sy-vline 
WA_ENH_CWB_DELTA_ENHO_GENERAL_STR-ENHNAME sy-vline 
WA_ENH_CWB_DELTA_ENHO_GENERAL_STR-ENHTOOLTYPE sy-vline 
WA_ENH_CWB_DELTA_ENHO_GENERAL_STR-MAIN_OBJ_TYPE sy-vline 
WA_ENH_CWB_DELTA_ENHO_GENERAL_STR-MAIN_OBJ_NAME sy-vline 
WA_ENH_CWB_DELTA_ENHO_GENERAL_STR-OBJ_TYPE sy-vline 
WA_ENH_CWB_DELTA_ENHO_GENERAL_STR-OBJ_NAME sy-vline 
WA_ENH_CWB_DELTA_ENHO_GENERAL_STR-MODUNIT_TYPE sy-vline 
WA_ENH_CWB_DELTA_ENHO_GENERAL_STR-MODUNIT_NAME sy-vline 
WA_ENH_CWB_DELTA_ENHO_GENERAL_STR-INCLUDE sy-vline 
WA_ENH_CWB_DELTA_ENHO_GENERAL_STR-TYPE sy-vline 
WA_ENH_CWB_DELTA_ENHO_GENERAL_STR-PARAM_ATTR sy-vline 
WA_ENH_CWB_DELTA_ENHO_GENERAL_STR-DELTA sy-vline 
WA_ENH_CWB_DELTA_ENHO_GENERAL_STR-TABNAME sy-vline 
WA_ENH_CWB_DELTA_ENHO_GENERAL_STR-TABIX_OLD sy-vline 
WA_ENH_CWB_DELTA_ENHO_GENERAL_STR-TABIX_NEW sy-vline 
WA_ENH_CWB_DELTA_ENHO_GENERAL_STR-FLAGS sy-vline 
WA_ENH_CWB_DELTA_ENHO_GENERAL_STR-CONTRACT_BROKEN sy-vline 
WA_ENH_CWB_DELTA_ENHO_GENERAL_STR-COMPATIBLE_CHANGED sy-vline 
WA_ENH_CWB_DELTA_ENHO_GENERAL_STR-TRAFFIC_LIGHT sy-vline 
WA_ENH_CWB_DELTA_ENHO_GENERAL_STR-CHANGED_OBJ_TYPE sy-vline 
WA_ENH_CWB_DELTA_ENHO_GENERAL_STR-CHANGE_INDICATOR sy-vline 
WA_ENH_CWB_DELTA_ENHO_GENERAL_STR-BADI_NAME sy-vline 
WA_ENH_CWB_DELTA_ENHO_GENERAL_STR-INTERFACE_NAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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