ABAP Select data from SAP table CRM_SRV_SDL_RFC_DEMAND into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CRM_SRV_SDL_RFC_DEMAND
*  INTO TABLE @DATA(IT_CRM_SRV_SDL_RFC_DEMAND2).
*--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_CRM_SRV_SDL_RFC_DEMAND INDEX 1 INTO DATA(WA_CRM_SRV_SDL_RFC_DEMAND2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CRM_SRV_SDL_RFC_DEMAND>-ID = 1.
<CRM_SRV_SDL_RFC_DEMAND>-DESCRIPTION = 1.
<CRM_SRV_SDL_RFC_DEMAND>-ITEM_OBJECT_TYPE = 1.
<CRM_SRV_SDL_RFC_DEMAND>-ITEM_TYPE = 1.
<CRM_SRV_SDL_RFC_DEMAND>-ITEM_NUMBER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CRM_SRV_SDL_RFC_DEMAND-PROCESS_OBJECT_TYPE, sy-vline,
  WA_CRM_SRV_SDL_RFC_DEMAND-PROCESS_GUID, sy-vline,
  WA_CRM_SRV_SDL_RFC_DEMAND-PROCESS_TYPE, sy-vline,
  WA_CRM_SRV_SDL_RFC_DEMAND-PROCESS_NUMBER, sy-vline,
  WA_CRM_SRV_SDL_RFC_DEMAND-PRIORITY, sy-vline,
  WA_CRM_SRV_SDL_RFC_DEMAND-ORDERED_PRODUCT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CRM_SRV_SDL_RFC_DEMAND 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_CRM_SRV_SDL_RFC_DEMAND 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_CRM_SRV_SDL_RFC_DEMAND INTO WA_CRM_SRV_SDL_RFC_DEMAND.


*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 PROCESS_NUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CRM_SRV_SDL_RFC_DEMAND-PROCESS_NUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRM_SRV_SDL_RFC_DEMAND-PROCESS_NUMBER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CUSTOMER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CRM_SRV_SDL_RFC_DEMAND-CUSTOMER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRM_SRV_SDL_RFC_DEMAND-CUSTOMER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LOGICAL_SYSTEM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CRM_SRV_SDL_RFC_DEMAND-LOGICAL_SYSTEM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRM_SRV_SDL_RFC_DEMAND-LOGICAL_SYSTEM.
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_CRM_SRV_SDL_RFC_DEMAND_STR, 
ID TYPE STRING,
DESCRIPTION TYPE STRING,
ITEM_OBJECT_TYPE TYPE STRING,
ITEM_TYPE TYPE STRING,
ITEM_NUMBER TYPE STRING,
PROCESS_OBJECT_TYPE TYPE STRING,
PROCESS_GUID TYPE STRING,
PROCESS_TYPE TYPE STRING,
PROCESS_NUMBER TYPE STRING,
PRIORITY TYPE STRING,
ORDERED_PRODUCT TYPE STRING,
DEMAND_DURATION TYPE STRING,
CUSTOMER TYPE STRING,
CUSTOMER_ZIP_CODE TYPE STRING,
CUSTOMER_STREET TYPE STRING,
CUSTOMER_REGION TYPE STRING,
EXEC_SERVICE_GROUP TYPE STRING,
APPOINTMENT_START TYPE STRING,
APPOINTMENT_END TYPE STRING,
CUSTOMER_REQUIRED_START TYPE STRING,
CUSTOMER_REQUIRED_END TYPE STRING,
SLA_FIRST_REAC TYPE STRING,
SLA_FINISH TYPE STRING,
LOGICAL_SYSTEM TYPE STRING,
STATUS_ITEM TYPE STRING,
STATUS_HEADER TYPE STRING,
TASK_FLAG TYPE STRING,
RESOURCE_TABLE TYPE STRING,
UPPER_SERVICE_GROUP TYPE STRING,
QUALIF_REQUIREMENT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CRM_SRV_SDL_RFC_DEMAND_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_CRM_SRV_SDL_RFC_DEMAND_STR-ID sy-vline 
WA_CRM_SRV_SDL_RFC_DEMAND_STR-DESCRIPTION sy-vline 
WA_CRM_SRV_SDL_RFC_DEMAND_STR-ITEM_OBJECT_TYPE sy-vline 
WA_CRM_SRV_SDL_RFC_DEMAND_STR-ITEM_TYPE sy-vline 
WA_CRM_SRV_SDL_RFC_DEMAND_STR-ITEM_NUMBER sy-vline 
WA_CRM_SRV_SDL_RFC_DEMAND_STR-PROCESS_OBJECT_TYPE sy-vline 
WA_CRM_SRV_SDL_RFC_DEMAND_STR-PROCESS_GUID sy-vline 
WA_CRM_SRV_SDL_RFC_DEMAND_STR-PROCESS_TYPE sy-vline 
WA_CRM_SRV_SDL_RFC_DEMAND_STR-PROCESS_NUMBER sy-vline 
WA_CRM_SRV_SDL_RFC_DEMAND_STR-PRIORITY sy-vline 
WA_CRM_SRV_SDL_RFC_DEMAND_STR-ORDERED_PRODUCT sy-vline 
WA_CRM_SRV_SDL_RFC_DEMAND_STR-DEMAND_DURATION sy-vline 
WA_CRM_SRV_SDL_RFC_DEMAND_STR-CUSTOMER sy-vline 
WA_CRM_SRV_SDL_RFC_DEMAND_STR-CUSTOMER_ZIP_CODE sy-vline 
WA_CRM_SRV_SDL_RFC_DEMAND_STR-CUSTOMER_STREET sy-vline 
WA_CRM_SRV_SDL_RFC_DEMAND_STR-CUSTOMER_REGION sy-vline 
WA_CRM_SRV_SDL_RFC_DEMAND_STR-EXEC_SERVICE_GROUP sy-vline 
WA_CRM_SRV_SDL_RFC_DEMAND_STR-APPOINTMENT_START sy-vline 
WA_CRM_SRV_SDL_RFC_DEMAND_STR-APPOINTMENT_END sy-vline 
WA_CRM_SRV_SDL_RFC_DEMAND_STR-CUSTOMER_REQUIRED_START sy-vline 
WA_CRM_SRV_SDL_RFC_DEMAND_STR-CUSTOMER_REQUIRED_END sy-vline 
WA_CRM_SRV_SDL_RFC_DEMAND_STR-SLA_FIRST_REAC sy-vline 
WA_CRM_SRV_SDL_RFC_DEMAND_STR-SLA_FINISH sy-vline 
WA_CRM_SRV_SDL_RFC_DEMAND_STR-LOGICAL_SYSTEM sy-vline 
WA_CRM_SRV_SDL_RFC_DEMAND_STR-STATUS_ITEM sy-vline 
WA_CRM_SRV_SDL_RFC_DEMAND_STR-STATUS_HEADER sy-vline 
WA_CRM_SRV_SDL_RFC_DEMAND_STR-TASK_FLAG sy-vline 
WA_CRM_SRV_SDL_RFC_DEMAND_STR-RESOURCE_TABLE sy-vline 
WA_CRM_SRV_SDL_RFC_DEMAND_STR-UPPER_SERVICE_GROUP sy-vline 
WA_CRM_SRV_SDL_RFC_DEMAND_STR-QUALIF_REQUIREMENT sy-vline      INTO ld_text SEPARATED BY SPACE.

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