ABAP Select data from SAP table ICRCS_DISP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICRCS_DISP
*  INTO TABLE @DATA(IT_ICRCS_DISP2).
*--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_ICRCS_DISP INDEX 1 INTO DATA(WA_ICRCS_DISP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICRCS_DISP>-RCOMP = 1.
<ICRCS_DISP>-VBUND = 1.
<ICRCS_DISP>-STATUS = 1.
<ICRCS_DISP>-ICON = 1.
<ICRCS_DISP>-STATXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICRCS_DISP-STADAT, sy-vline,
  WA_ICRCS_DISP-STATIM, sy-vline,
  WA_ICRCS_DISP-NUMDOC, sy-vline,
  WA_ICRCS_DISP-KEYDT, sy-vline,
  WA_ICRCS_DISP-SELDAT, sy-vline,
  WA_ICRCS_DISP-SELTIM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICRCS_DISP 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_ICRCS_DISP 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_ICRCS_DISP INTO WA_ICRCS_DISP.


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

*Conversion exit ALPHA, internal->external for field VBUND
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ICRCS_DISP-VBUND
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICRCS_DISP-VBUND.
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_ICRCS_DISP_STR, 
RCOMP TYPE STRING,
VBUND TYPE STRING,
STATUS TYPE STRING,
ICON TYPE STRING,
STATXT TYPE STRING,
STADAT TYPE STRING,
STATIM TYPE STRING,
NUMDOC TYPE STRING,
KEYDT TYPE STRING,
SELDAT TYPE STRING,
SELTIM TYPE STRING,
JOBDAT TYPE STRING,
JOBTIM TYPE STRING,
UNAME TYPE STRING,
OPITM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICRCS_DISP_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_ICRCS_DISP_STR-RCOMP sy-vline 
WA_ICRCS_DISP_STR-VBUND sy-vline 
WA_ICRCS_DISP_STR-STATUS sy-vline 
WA_ICRCS_DISP_STR-ICON sy-vline 
WA_ICRCS_DISP_STR-STATXT sy-vline 
WA_ICRCS_DISP_STR-STADAT sy-vline 
WA_ICRCS_DISP_STR-STATIM sy-vline 
WA_ICRCS_DISP_STR-NUMDOC sy-vline 
WA_ICRCS_DISP_STR-KEYDT sy-vline 
WA_ICRCS_DISP_STR-SELDAT sy-vline 
WA_ICRCS_DISP_STR-SELTIM sy-vline 
WA_ICRCS_DISP_STR-JOBDAT sy-vline 
WA_ICRCS_DISP_STR-JOBTIM sy-vline 
WA_ICRCS_DISP_STR-UNAME sy-vline 
WA_ICRCS_DISP_STR-OPITM sy-vline      INTO ld_text SEPARATED BY SPACE.

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