ABAP Select data from SAP table ICA_S_ITEM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICA_S_ITEM
*  INTO TABLE @DATA(IT_ICA_S_ITEM2).
*--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_ICA_S_ITEM INDEX 1 INTO DATA(WA_ICA_S_ITEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICA_S_ITEM>-ITEM_GROUP = 1.
<ICA_S_ITEM>-ICA_AMOUNT = 1.
<ICA_S_ITEM>-ICA_CURRENCY = 1.
<ICA_S_ITEM>-ORIGIN_SOURCE = 1.
<ICA_S_ITEM>-SLICE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICA_S_ITEM-BUKRS, sy-vline,
  WA_ICA_S_ITEM-RCOMP, sy-vline,
  WA_ICA_S_ITEM-GJAHR, sy-vline,
  WA_ICA_S_ITEM-PERIV, sy-vline,
  WA_ICA_S_ITEM-POPER, sy-vline,
  WA_ICA_S_ITEM-XBLNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICA_S_ITEM 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_ICA_S_ITEM 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_ICA_S_ITEM INTO WA_ICA_S_ITEM.


*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_ICA_S_ITEM-RCOMP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICA_S_ITEM-RCOMP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_ICA_S_ITEM-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICA_S_ITEM-GJAHR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field RCNTR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ICA_S_ITEM-RCNTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICA_S_ITEM-RCNTR.
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_ICA_S_ITEM_STR, 
ITEM_GROUP TYPE STRING,
ICA_AMOUNT TYPE STRING,
ICA_CURRENCY TYPE STRING,
ORIGIN_SOURCE TYPE STRING,
SLICE TYPE STRING,
BUKRS TYPE STRING,
RCOMP TYPE STRING,
GJAHR TYPE STRING,
PERIV TYPE STRING,
POPER TYPE STRING,
XBLNR TYPE STRING,
BKTXT TYPE STRING,
XREF1_HD TYPE STRING,
XREF2_HD TYPE STRING,
RACCT TYPE STRING,
BSCHL TYPE STRING,
KUNNR TYPE STRING,
LIFNR TYPE STRING,
ZUONR TYPE STRING,
SGTXT TYPE STRING,
RASSC TYPE STRING,
HBKID TYPE STRING,
HKTID TYPE STRING,
PRCTR TYPE STRING,
PPRCTR TYPE STRING,
SEGMENT TYPE STRING,
PSEGMENT TYPE STRING,
RCNTR TYPE STRING,
RFAREA TYPE STRING,
SFAREA TYPE STRING,
MWSKZ TYPE STRING,
TXJCD TYPE STRING,
DUMMY_INCL_EEW_COBL TYPE STRING,
WSL TYPE STRING,
RWCUR TYPE STRING,
HSL TYPE STRING,
RHCUR TYPE STRING,
KSL TYPE STRING,
RKCUR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICA_S_ITEM_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_ICA_S_ITEM_STR-ITEM_GROUP sy-vline 
WA_ICA_S_ITEM_STR-ICA_AMOUNT sy-vline 
WA_ICA_S_ITEM_STR-ICA_CURRENCY sy-vline 
WA_ICA_S_ITEM_STR-ORIGIN_SOURCE sy-vline 
WA_ICA_S_ITEM_STR-SLICE sy-vline 
WA_ICA_S_ITEM_STR-BUKRS sy-vline 
WA_ICA_S_ITEM_STR-RCOMP sy-vline 
WA_ICA_S_ITEM_STR-GJAHR sy-vline 
WA_ICA_S_ITEM_STR-PERIV sy-vline 
WA_ICA_S_ITEM_STR-POPER sy-vline 
WA_ICA_S_ITEM_STR-XBLNR sy-vline 
WA_ICA_S_ITEM_STR-BKTXT sy-vline 
WA_ICA_S_ITEM_STR-XREF1_HD sy-vline 
WA_ICA_S_ITEM_STR-XREF2_HD sy-vline 
WA_ICA_S_ITEM_STR-RACCT sy-vline 
WA_ICA_S_ITEM_STR-BSCHL sy-vline 
WA_ICA_S_ITEM_STR-KUNNR sy-vline 
WA_ICA_S_ITEM_STR-LIFNR sy-vline 
WA_ICA_S_ITEM_STR-ZUONR sy-vline 
WA_ICA_S_ITEM_STR-SGTXT sy-vline 
WA_ICA_S_ITEM_STR-RASSC sy-vline 
WA_ICA_S_ITEM_STR-HBKID sy-vline 
WA_ICA_S_ITEM_STR-HKTID sy-vline 
WA_ICA_S_ITEM_STR-PRCTR sy-vline 
WA_ICA_S_ITEM_STR-PPRCTR sy-vline 
WA_ICA_S_ITEM_STR-SEGMENT sy-vline 
WA_ICA_S_ITEM_STR-PSEGMENT sy-vline 
WA_ICA_S_ITEM_STR-RCNTR sy-vline 
WA_ICA_S_ITEM_STR-RFAREA sy-vline 
WA_ICA_S_ITEM_STR-SFAREA sy-vline 
WA_ICA_S_ITEM_STR-MWSKZ sy-vline 
WA_ICA_S_ITEM_STR-TXJCD sy-vline 
WA_ICA_S_ITEM_STR-DUMMY_INCL_EEW_COBL sy-vline 
WA_ICA_S_ITEM_STR-WSL sy-vline 
WA_ICA_S_ITEM_STR-RWCUR sy-vline 
WA_ICA_S_ITEM_STR-HSL sy-vline 
WA_ICA_S_ITEM_STR-RHCUR sy-vline 
WA_ICA_S_ITEM_STR-KSL sy-vline 
WA_ICA_S_ITEM_STR-RKCUR sy-vline      INTO ld_text SEPARATED BY SPACE.

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