ABAP Select data from SAP table ESERVICED into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ESERVICED
*  INTO TABLE @DATA(IT_ESERVICED2).
*--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_ESERVICED INDEX 1 INTO DATA(WA_ESERVICED2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ESERVICED>-MANDT = 1.
<ESERVICED>-VERTRAG = 1.
<ESERVICED>-INT_UI = 1.
<ESERVICED>-SERVICE_START = 1.
<ESERVICED>-SERVICE_END = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ESERVICED-SERVICE, sy-vline,
  WA_ESERVICED-SERVICEID, sy-vline,
  WA_ESERVICED-SRVPRVREF, sy-vline,
  WA_ESERVICED-SERVPROV_PAY, sy-vline,
  WA_ESERVICED-SPARTE, sy-vline,
  WA_ESERVICED-STARTOBJTYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ESERVICED 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_ESERVICED 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_ESERVICED INTO WA_ESERVICED.


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

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

*Conversion exit ALPHA, internal->external for field ENDOBJKEY
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ESERVICED-ENDOBJKEY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ESERVICED-ENDOBJKEY.
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_ESERVICED_STR, 
MANDT TYPE STRING,
VERTRAG TYPE STRING,
INT_UI TYPE STRING,
SERVICE_START TYPE STRING,
SERVICE_END TYPE STRING,
SERVICE TYPE STRING,
SERVICEID TYPE STRING,
SRVPRVREF TYPE STRING,
SERVPROV_PAY TYPE STRING,
SPARTE TYPE STRING,
STARTOBJTYPE TYPE STRING,
STARTOBJKEY TYPE STRING,
ENDOBJTYPE TYPE STRING,
ENDOBJKEY TYPE STRING,
ERDAT TYPE STRING,
ERNAM TYPE STRING,
AEDAT TYPE STRING,
AENAM TYPE STRING,
BEGRU TYPE STRING,
LOEVM TYPE STRING,
PREV_SERV_START TYPE STRING,
PREV_SERV_END TYPE STRING,
OPTIONAL TYPE STRING,
UITEXT TYPE STRING,
RAHMEN TYPE STRING,
IS_CURLINE TYPE STRING,
EXT_UI TYPE STRING,
SERVICETEXT TYPE STRING,
OPTICON TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ESERVICED_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_ESERVICED_STR-MANDT sy-vline 
WA_ESERVICED_STR-VERTRAG sy-vline 
WA_ESERVICED_STR-INT_UI sy-vline 
WA_ESERVICED_STR-SERVICE_START sy-vline 
WA_ESERVICED_STR-SERVICE_END sy-vline 
WA_ESERVICED_STR-SERVICE sy-vline 
WA_ESERVICED_STR-SERVICEID sy-vline 
WA_ESERVICED_STR-SRVPRVREF sy-vline 
WA_ESERVICED_STR-SERVPROV_PAY sy-vline 
WA_ESERVICED_STR-SPARTE sy-vline 
WA_ESERVICED_STR-STARTOBJTYPE sy-vline 
WA_ESERVICED_STR-STARTOBJKEY sy-vline 
WA_ESERVICED_STR-ENDOBJTYPE sy-vline 
WA_ESERVICED_STR-ENDOBJKEY sy-vline 
WA_ESERVICED_STR-ERDAT sy-vline 
WA_ESERVICED_STR-ERNAM sy-vline 
WA_ESERVICED_STR-AEDAT sy-vline 
WA_ESERVICED_STR-AENAM sy-vline 
WA_ESERVICED_STR-BEGRU sy-vline 
WA_ESERVICED_STR-LOEVM sy-vline 
WA_ESERVICED_STR-PREV_SERV_START sy-vline 
WA_ESERVICED_STR-PREV_SERV_END sy-vline 
WA_ESERVICED_STR-OPTIONAL sy-vline 
WA_ESERVICED_STR-UITEXT sy-vline 
WA_ESERVICED_STR-RAHMEN sy-vline 
WA_ESERVICED_STR-IS_CURLINE sy-vline 
WA_ESERVICED_STR-EXT_UI sy-vline 
WA_ESERVICED_STR-SERVICETEXT sy-vline 
WA_ESERVICED_STR-OPTICON sy-vline      INTO ld_text SEPARATED BY SPACE.

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