ABAP Select data from SAP table ICS_ITEMEV into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICS_ITEMEV
*  INTO TABLE @DATA(IT_ICS_ITEMEV2).
*--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_ICS_ITEMEV INDEX 1 INTO DATA(WA_ICS_ITEMEV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICS_ITEMEV>-EVALCAT = 1.
<ICS_ITEMEV>-EVAMOUNT = 1.
<ICS_ITEMEV>-EVCURR = 1.
<ICS_ITEMEV>-GROSNET = 1.
<ICS_ITEMEV>-TXCOD = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICS_ITEMEV-EVDATE, sy-vline,
  WA_ICS_ITEMEV-LIABRATE, sy-vline,
  WA_ICS_ITEMEV-EVALBASE, sy-vline,
  WA_ICS_ITEMEV-CLMDAMOUNT, sy-vline,
  WA_ICS_ITEMEV-EVAMTPERUNIT, sy-vline,
  WA_ICS_ITEMEV-EVQUANTITY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICS_ITEMEV 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_ICS_ITEMEV 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_ICS_ITEMEV INTO WA_ICS_ITEMEV.


*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 CUNIT, internal->external for field EVQUANUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ICS_ITEMEV-EVQUANUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICS_ITEMEV-EVQUANUNIT.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field VENDOR_CATALOG
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ICS_ITEMEV-VENDOR_CATALOG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICS_ITEMEV-VENDOR_CATALOG.
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_ICS_ITEMEV_STR, 
EVALCAT TYPE STRING,
EVAMOUNT TYPE STRING,
EVCURR TYPE STRING,
GROSNET TYPE STRING,
TXCOD TYPE STRING,
EVDATE TYPE STRING,
LIABRATE TYPE STRING,
EVALBASE TYPE STRING,
CLMDAMOUNT TYPE STRING,
EVAMTPERUNIT TYPE STRING,
EVQUANTITY TYPE STRING,
EVQUANUNIT TYPE STRING,
XARCHDOC TYPE STRING,
FACTOR TYPE STRING,
DNUMBER TYPE STRING,
STARTDATE TYPE STRING,
ENDDATE TYPE STRING,
PERDAY TYPE STRING,
OC TYPE STRING,
RC TYPE STRING,
ACV TYPE STRING,
INUMBER TYPE STRING,
AGE TYPE STRING,
ACVPERCENT TYPE STRING,
RCORACV TYPE STRING,
CATALOGID TYPE STRING,
CATALOGITEM TYPE STRING,
MATNR TYPE STRING,
MATGROUP TYPE STRING,
PRICE_UNIT TYPE STRING,
VENDOR_CATALOG TYPE STRING,
VENDORMAT TYPE STRING,
MANUFACTCODE TYPE STRING,
MANUFACTMAT TYPE STRING,
SERVICE TYPE STRING,
CUST_FIELD1 TYPE STRING,
CUST_FIELD2 TYPE STRING,
CUST_FIELD3 TYPE STRING,
CUST_FIELD4 TYPE STRING,
CUST_FIELD5 TYPE STRING,
PROCUREMENT TYPE STRING,
_DATAAGING TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICS_ITEMEV_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_ICS_ITEMEV_STR-EVALCAT sy-vline 
WA_ICS_ITEMEV_STR-EVAMOUNT sy-vline 
WA_ICS_ITEMEV_STR-EVCURR sy-vline 
WA_ICS_ITEMEV_STR-GROSNET sy-vline 
WA_ICS_ITEMEV_STR-TXCOD sy-vline 
WA_ICS_ITEMEV_STR-EVDATE sy-vline 
WA_ICS_ITEMEV_STR-LIABRATE sy-vline 
WA_ICS_ITEMEV_STR-EVALBASE sy-vline 
WA_ICS_ITEMEV_STR-CLMDAMOUNT sy-vline 
WA_ICS_ITEMEV_STR-EVAMTPERUNIT sy-vline 
WA_ICS_ITEMEV_STR-EVQUANTITY sy-vline 
WA_ICS_ITEMEV_STR-EVQUANUNIT sy-vline 
WA_ICS_ITEMEV_STR-XARCHDOC sy-vline 
WA_ICS_ITEMEV_STR-FACTOR sy-vline 
WA_ICS_ITEMEV_STR-DNUMBER sy-vline 
WA_ICS_ITEMEV_STR-STARTDATE sy-vline 
WA_ICS_ITEMEV_STR-ENDDATE sy-vline 
WA_ICS_ITEMEV_STR-PERDAY sy-vline 
WA_ICS_ITEMEV_STR-OC sy-vline 
WA_ICS_ITEMEV_STR-RC sy-vline 
WA_ICS_ITEMEV_STR-ACV sy-vline 
WA_ICS_ITEMEV_STR-INUMBER sy-vline 
WA_ICS_ITEMEV_STR-AGE sy-vline 
WA_ICS_ITEMEV_STR-ACVPERCENT sy-vline 
WA_ICS_ITEMEV_STR-RCORACV sy-vline 
WA_ICS_ITEMEV_STR-CATALOGID sy-vline 
WA_ICS_ITEMEV_STR-CATALOGITEM sy-vline 
WA_ICS_ITEMEV_STR-MATNR sy-vline 
WA_ICS_ITEMEV_STR-MATGROUP sy-vline 
WA_ICS_ITEMEV_STR-PRICE_UNIT sy-vline 
WA_ICS_ITEMEV_STR-VENDOR_CATALOG sy-vline 
WA_ICS_ITEMEV_STR-VENDORMAT sy-vline 
WA_ICS_ITEMEV_STR-MANUFACTCODE sy-vline 
WA_ICS_ITEMEV_STR-MANUFACTMAT sy-vline 
WA_ICS_ITEMEV_STR-SERVICE sy-vline 
WA_ICS_ITEMEV_STR-CUST_FIELD1 sy-vline 
WA_ICS_ITEMEV_STR-CUST_FIELD2 sy-vline 
WA_ICS_ITEMEV_STR-CUST_FIELD3 sy-vline 
WA_ICS_ITEMEV_STR-CUST_FIELD4 sy-vline 
WA_ICS_ITEMEV_STR-CUST_FIELD5 sy-vline 
WA_ICS_ITEMEV_STR-PROCUREMENT sy-vline 
WA_ICS_ITEMEV_STR-_DATAAGING sy-vline      INTO ld_text SEPARATED BY SPACE.

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