ABAP Select data from SAP table REOR_API_COST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REOR_API_COST
*  INTO TABLE @DATA(IT_REOR_API_COST2).
*--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_REOR_API_COST INDEX 1 INTO DATA(WA_REOR_API_COST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REOR_API_COST>-ID = 1.
<REOR_API_COST>-COSTCENTERID = 1.
<REOR_API_COST>-AUFNR = 1.
<REOR_API_COST>-PROJECTELEMENTID = 1.
<REOR_API_COST>-PAYMENTSTATUS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REOR_API_COST-ISREVERSAL, sy-vline,
  WA_REOR_API_COST-PRICE, sy-vline,
  WA_REOR_API_COST-PRICECURRKEY, sy-vline,
  WA_REOR_API_COST-CONDTYPE, sy-vline,
  WA_REOR_API_COST-SRVTYPE, sy-vline,
  WA_REOR_API_COST-XCONDTYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REOR_API_COST 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_REOR_API_COST 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_REOR_API_COST INTO WA_REOR_API_COST.


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

*Conversion exit ALPHA, internal->external for field CONDTYPE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_REOR_API_COST-CONDTYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REOR_API_COST-CONDTYPE.
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_REOR_API_COST_STR, 
ID TYPE STRING,
COSTCENTERID TYPE STRING,
AUFNR TYPE STRING,
PROJECTELEMENTID TYPE STRING,
PAYMENTSTATUS TYPE STRING,
ISREVERSAL TYPE STRING,
PRICE TYPE STRING,
PRICECURRKEY TYPE STRING,
CONDTYPE TYPE STRING,
SRVTYPE TYPE STRING,
XCONDTYPE TYPE STRING,
XSRVTYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REOR_API_COST_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_REOR_API_COST_STR-ID sy-vline 
WA_REOR_API_COST_STR-COSTCENTERID sy-vline 
WA_REOR_API_COST_STR-AUFNR sy-vline 
WA_REOR_API_COST_STR-PROJECTELEMENTID sy-vline 
WA_REOR_API_COST_STR-PAYMENTSTATUS sy-vline 
WA_REOR_API_COST_STR-ISREVERSAL sy-vline 
WA_REOR_API_COST_STR-PRICE sy-vline 
WA_REOR_API_COST_STR-PRICECURRKEY sy-vline 
WA_REOR_API_COST_STR-CONDTYPE sy-vline 
WA_REOR_API_COST_STR-SRVTYPE sy-vline 
WA_REOR_API_COST_STR-XCONDTYPE sy-vline 
WA_REOR_API_COST_STR-XSRVTYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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