ABAP Select data from SAP table CRMS_OBJ_ITEM into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CRMS_OBJ_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 CRMS_OBJ_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 CRMS_OBJ_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_CRMS_OBJ_ITEM TYPE STANDARD TABLE OF CRMS_OBJ_ITEM,
      WA_CRMS_OBJ_ITEM TYPE CRMS_OBJ_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: <CRMS_OBJ_ITEM> TYPE CRMS_OBJ_ITEM.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CRMS_OBJ_ITEM
*  INTO TABLE @DATA(IT_CRMS_OBJ_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_CRMS_OBJ_ITEM INDEX 1 INTO DATA(WA_CRMS_OBJ_ITEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CRMS_OBJ_ITEM>-MANDT = 1.
<CRMS_OBJ_ITEM>-DOCNUM = 1.
<CRMS_OBJ_ITEM>-ITMNUM = 1.
<CRMS_OBJ_ITEM>-MATNR = 1.
<CRMS_OBJ_ITEM>-BWKEY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CRMS_OBJ_ITEM-BWTAR, sy-vline,
  WA_CRMS_OBJ_ITEM-CHARG, sy-vline,
  WA_CRMS_OBJ_ITEM-MATKL, sy-vline,
  WA_CRMS_OBJ_ITEM-MAKTX, sy-vline,
  WA_CRMS_OBJ_ITEM-DOCREF, sy-vline,
  WA_CRMS_OBJ_ITEM-ITMREF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CRMS_OBJ_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_CRMS_OBJ_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_CRMS_OBJ_ITEM INTO WA_CRMS_OBJ_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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_CRMS_OBJ_ITEM_STR, 
MANDT TYPE STRING,
DOCNUM TYPE STRING,
ITMNUM TYPE STRING,
MATNR TYPE STRING,
BWKEY TYPE STRING,
BWTAR TYPE STRING,
CHARG TYPE STRING,
MATKL TYPE STRING,
MAKTX TYPE STRING,
DOCREF TYPE STRING,
ITMREF TYPE STRING,
CFOP TYPE STRING,
NBM TYPE STRING,
MATORG TYPE STRING,
TAXSIT TYPE STRING,
TAXSI2 TYPE STRING,
OWNPRO TYPE STRING,
MATUSE TYPE STRING,
REFTYP TYPE STRING,
REFKEY TYPE STRING,
REFITM TYPE STRING,
MENGE TYPE STRING,
MEINS TYPE STRING,
NETPR TYPE STRING,
NETWR TYPE STRING,
TAXLW1 TYPE STRING,
TAXLW2 TYPE STRING,
TMISS TYPE STRING,
NETFRE TYPE STRING,
NETINS TYPE STRING,
NETOTH TYPE STRING,
INDUS3 TYPE STRING,
ITMTYP TYPE STRING,
NETDIS TYPE STRING,
SPCSTO TYPE STRING,
INCLTX TYPE STRING,
STATIT TYPE STRING,
WERKS TYPE STRING,
CFOP_10 TYPE STRING,
R_REFTYP TYPE STRING,
R_REFKEY TYPE STRING,
R_AWSYS TYPE STRING,
TAXLW3 TYPE STRING,
MATNR_EXTERNAL TYPE STRING,
MATNR_GUID TYPE STRING,
MATNR_VERSION TYPE STRING,
SRVNR TYPE STRING,
TAXSI3 TYPE STRING,
TAXLW4 TYPE STRING,
TAXSI4 TYPE STRING,
TAXLW5 TYPE STRING,
TAXSI5 TYPE STRING,
NBS TYPE STRING,
XPED TYPE STRING,
NITEMPED TYPE STRING,
CLENQ TYPE STRING,
CSELO TYPE STRING,
QSELO TYPE STRING,
NUM_ITEM TYPE STRING,
COD_CTA TYPE STRING,
VTOTTRIB TYPE STRING,
NFCI TYPE STRING,
NPROCESSO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CRMS_OBJ_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_CRMS_OBJ_ITEM_STR-MANDT sy-vline 
WA_CRMS_OBJ_ITEM_STR-DOCNUM sy-vline 
WA_CRMS_OBJ_ITEM_STR-ITMNUM sy-vline 
WA_CRMS_OBJ_ITEM_STR-MATNR sy-vline 
WA_CRMS_OBJ_ITEM_STR-BWKEY sy-vline 
WA_CRMS_OBJ_ITEM_STR-BWTAR sy-vline 
WA_CRMS_OBJ_ITEM_STR-CHARG sy-vline 
WA_CRMS_OBJ_ITEM_STR-MATKL sy-vline 
WA_CRMS_OBJ_ITEM_STR-MAKTX sy-vline 
WA_CRMS_OBJ_ITEM_STR-DOCREF sy-vline 
WA_CRMS_OBJ_ITEM_STR-ITMREF sy-vline 
WA_CRMS_OBJ_ITEM_STR-CFOP sy-vline 
WA_CRMS_OBJ_ITEM_STR-NBM sy-vline 
WA_CRMS_OBJ_ITEM_STR-MATORG sy-vline 
WA_CRMS_OBJ_ITEM_STR-TAXSIT sy-vline 
WA_CRMS_OBJ_ITEM_STR-TAXSI2 sy-vline 
WA_CRMS_OBJ_ITEM_STR-OWNPRO sy-vline 
WA_CRMS_OBJ_ITEM_STR-MATUSE sy-vline 
WA_CRMS_OBJ_ITEM_STR-REFTYP sy-vline 
WA_CRMS_OBJ_ITEM_STR-REFKEY sy-vline 
WA_CRMS_OBJ_ITEM_STR-REFITM sy-vline 
WA_CRMS_OBJ_ITEM_STR-MENGE sy-vline 
WA_CRMS_OBJ_ITEM_STR-MEINS sy-vline 
WA_CRMS_OBJ_ITEM_STR-NETPR sy-vline 
WA_CRMS_OBJ_ITEM_STR-NETWR sy-vline 
WA_CRMS_OBJ_ITEM_STR-TAXLW1 sy-vline 
WA_CRMS_OBJ_ITEM_STR-TAXLW2 sy-vline 
WA_CRMS_OBJ_ITEM_STR-TMISS sy-vline 
WA_CRMS_OBJ_ITEM_STR-NETFRE sy-vline 
WA_CRMS_OBJ_ITEM_STR-NETINS sy-vline 
WA_CRMS_OBJ_ITEM_STR-NETOTH sy-vline 
WA_CRMS_OBJ_ITEM_STR-INDUS3 sy-vline 
WA_CRMS_OBJ_ITEM_STR-ITMTYP sy-vline 
WA_CRMS_OBJ_ITEM_STR-NETDIS sy-vline 
WA_CRMS_OBJ_ITEM_STR-SPCSTO sy-vline 
WA_CRMS_OBJ_ITEM_STR-INCLTX sy-vline 
WA_CRMS_OBJ_ITEM_STR-STATIT sy-vline 
WA_CRMS_OBJ_ITEM_STR-WERKS sy-vline 
WA_CRMS_OBJ_ITEM_STR-CFOP_10 sy-vline 
WA_CRMS_OBJ_ITEM_STR-R_REFTYP sy-vline 
WA_CRMS_OBJ_ITEM_STR-R_REFKEY sy-vline 
WA_CRMS_OBJ_ITEM_STR-R_AWSYS sy-vline 
WA_CRMS_OBJ_ITEM_STR-TAXLW3 sy-vline 
WA_CRMS_OBJ_ITEM_STR-MATNR_EXTERNAL sy-vline 
WA_CRMS_OBJ_ITEM_STR-MATNR_GUID sy-vline 
WA_CRMS_OBJ_ITEM_STR-MATNR_VERSION sy-vline 
WA_CRMS_OBJ_ITEM_STR-SRVNR sy-vline 
WA_CRMS_OBJ_ITEM_STR-TAXSI3 sy-vline 
WA_CRMS_OBJ_ITEM_STR-TAXLW4 sy-vline 
WA_CRMS_OBJ_ITEM_STR-TAXSI4 sy-vline 
WA_CRMS_OBJ_ITEM_STR-TAXLW5 sy-vline 
WA_CRMS_OBJ_ITEM_STR-TAXSI5 sy-vline 
WA_CRMS_OBJ_ITEM_STR-NBS sy-vline 
WA_CRMS_OBJ_ITEM_STR-XPED sy-vline 
WA_CRMS_OBJ_ITEM_STR-NITEMPED sy-vline 
WA_CRMS_OBJ_ITEM_STR-CLENQ sy-vline 
WA_CRMS_OBJ_ITEM_STR-CSELO sy-vline 
WA_CRMS_OBJ_ITEM_STR-QSELO sy-vline 
WA_CRMS_OBJ_ITEM_STR-NUM_ITEM sy-vline 
WA_CRMS_OBJ_ITEM_STR-COD_CTA sy-vline 
WA_CRMS_OBJ_ITEM_STR-VTOTTRIB sy-vline 
WA_CRMS_OBJ_ITEM_STR-NFCI sy-vline 
WA_CRMS_OBJ_ITEM_STR-NPROCESSO sy-vline      INTO ld_text SEPARATED BY SPACE.

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