ABAP Select data from SAP table CSRVCITMREF into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CSRVCITMREF
*  INTO TABLE @DATA(IT_CSRVCITMREF2).
*--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_CSRVCITMREF INDEX 1 INTO DATA(WA_CSRVCITMREF2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CSRVCITMREF>-MANDT = 1.
<CSRVCITMREF>-SERVICEOBJECTTYPE = 1.
<CSRVCITMREF>-SERVICEDOCUMENT = 1.
<CSRVCITMREF>-SERVICEDOCUMENTITEM = 1.
<CSRVCITMREF>-SERVICEREFOBJECTSEQUENCENUMBER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CSRVCITMREF-SERVICEREFERENCEOBJECTTYPE, sy-vline,
  WA_CSRVCITMREF-SERVICEREFERENCEOBJECTUUID, sy-vline,
  WA_CSRVCITMREF-PRODUCTID, sy-vline,
  WA_CSRVCITMREF-PRODUCTNAME, sy-vline,
  WA_CSRVCITMREF-SRVCREFOBJISMAINOBJECT, sy-vline,
  WA_CSRVCITMREF-PRODUCTUUID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CSRVCITMREF 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_CSRVCITMREF 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_CSRVCITMREF INTO WA_CSRVCITMREF.


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

*Conversion exit MATN1, internal->external for field PRODUCTID
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_CSRVCITMREF-PRODUCTID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CSRVCITMREF-PRODUCTID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GERNR, internal->external for field SERIALNUMBER
CALL FUNCTION 'CONVERSION_EXIT_GERNR_OUTPUT'
  EXPORTING
    input =                      WA_CSRVCITMREF-SERIALNUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CSRVCITMREF-SERIALNUMBER.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit TPLNR, internal->external for field FUNCTIONALLOCATION
CALL FUNCTION 'CONVERSION_EXIT_TPLNR_OUTPUT'
  EXPORTING
    input =                      WA_CSRVCITMREF-FUNCTIONALLOCATION
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CSRVCITMREF-FUNCTIONALLOCATION.
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_CSRVCITMREF_STR, 
MANDT TYPE STRING,
SERVICEOBJECTTYPE TYPE STRING,
SERVICEDOCUMENT TYPE STRING,
SERVICEDOCUMENTITEM TYPE STRING,
SERVICEREFOBJECTSEQUENCENUMBER TYPE STRING,
SERVICEREFERENCEOBJECTTYPE TYPE STRING,
SERVICEREFERENCEOBJECTUUID TYPE STRING,
PRODUCTID TYPE STRING,
PRODUCTNAME TYPE STRING,
SRVCREFOBJISMAINOBJECT TYPE STRING,
PRODUCTUUID TYPE STRING,
SERIALNUMBER TYPE STRING,
EQUIPMENT TYPE STRING,
EQUIPMENTNAME TYPE STRING,
FUNCTIONALLOCATION TYPE STRING,
FUNCTIONALLOCATIONNAME TYPE STRING,
TECHOBJISEQUIPORFUNCNLLOC TYPE STRING,
TECHNICALOBJECT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CSRVCITMREF_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_CSRVCITMREF_STR-MANDT sy-vline 
WA_CSRVCITMREF_STR-SERVICEOBJECTTYPE sy-vline 
WA_CSRVCITMREF_STR-SERVICEDOCUMENT sy-vline 
WA_CSRVCITMREF_STR-SERVICEDOCUMENTITEM sy-vline 
WA_CSRVCITMREF_STR-SERVICEREFOBJECTSEQUENCENUMBER sy-vline 
WA_CSRVCITMREF_STR-SERVICEREFERENCEOBJECTTYPE sy-vline 
WA_CSRVCITMREF_STR-SERVICEREFERENCEOBJECTUUID sy-vline 
WA_CSRVCITMREF_STR-PRODUCTID sy-vline 
WA_CSRVCITMREF_STR-PRODUCTNAME sy-vline 
WA_CSRVCITMREF_STR-SRVCREFOBJISMAINOBJECT sy-vline 
WA_CSRVCITMREF_STR-PRODUCTUUID sy-vline 
WA_CSRVCITMREF_STR-SERIALNUMBER sy-vline 
WA_CSRVCITMREF_STR-EQUIPMENT sy-vline 
WA_CSRVCITMREF_STR-EQUIPMENTNAME sy-vline 
WA_CSRVCITMREF_STR-FUNCTIONALLOCATION sy-vline 
WA_CSRVCITMREF_STR-FUNCTIONALLOCATIONNAME sy-vline 
WA_CSRVCITMREF_STR-TECHOBJISEQUIPORFUNCNLLOC sy-vline 
WA_CSRVCITMREF_STR-TECHNICALOBJECT sy-vline      INTO ld_text SEPARATED BY SPACE.

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