ABAP Select data from SAP table CRMT_SRV_RA_INVITEM into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CRMT_SRV_RA_INVITEM
*  INTO TABLE @DATA(IT_CRMT_SRV_RA_INVITEM2).
*--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_CRMT_SRV_RA_INVITEM INDEX 1 INTO DATA(WA_CRMT_SRV_RA_INVITEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CRMT_SRV_RA_INVITEM>-SRCDOC_COMP = 1.
<CRMT_SRV_RA_INVITEM>-SRCDOC_LOGSYS = 1.
<CRMT_SRV_RA_INVITEM>-SRCDOC_TYPE = 1.
<CRMT_SRV_RA_INVITEM>-SRCDOC_ID = 1.
<CRMT_SRV_RA_INVITEM>-TIMESTAMP_UTC = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CRMT_SRV_RA_INVITEM-HEADER_ID, sy-vline,
  WA_CRMT_SRV_RA_INVITEM-ITEM_ID, sy-vline,
  WA_CRMT_SRV_RA_INVITEM-KUNNR, sy-vline,
  WA_CRMT_SRV_RA_INVITEM-PARTNER, sy-vline,
  WA_CRMT_SRV_RA_INVITEM-BUKRS, sy-vline,
  WA_CRMT_SRV_RA_INVITEM-WAERS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CRMT_SRV_RA_INVITEM 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_CRMT_SRV_RA_INVITEM 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_CRMT_SRV_RA_INVITEM INTO WA_CRMT_SRV_RA_INVITEM.


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

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

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

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

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

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

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

*Conversion exit EXCRT, internal->external for field EXCHANGE_RATE
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_CRMT_SRV_RA_INVITEM-EXCHANGE_RATE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRMT_SRV_RA_INVITEM-EXCHANGE_RATE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EXCRT, internal->external for field EXCHANGE_RATE2
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_CRMT_SRV_RA_INVITEM-EXCHANGE_RATE2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRMT_SRV_RA_INVITEM-EXCHANGE_RATE2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EXCRT, internal->external for field EXCHANGE_RATE3
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_CRMT_SRV_RA_INVITEM-EXCHANGE_RATE3
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRMT_SRV_RA_INVITEM-EXCHANGE_RATE3.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PINV_LOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CRMT_SRV_RA_INVITEM-PINV_LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRMT_SRV_RA_INVITEM-PINV_LOGSYS.
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_CRMT_SRV_RA_INVITEM_STR, 
SRCDOC_COMP TYPE STRING,
SRCDOC_LOGSYS TYPE STRING,
SRCDOC_TYPE TYPE STRING,
SRCDOC_ID TYPE STRING,
TIMESTAMP_UTC TYPE STRING,
HEADER_ID TYPE STRING,
ITEM_ID TYPE STRING,
KUNNR TYPE STRING,
PARTNER TYPE STRING,
BUKRS TYPE STRING,
WAERS TYPE STRING,
HWAER TYPE STRING,
HWAE2 TYPE STRING,
HWAE3 TYPE STRING,
QUANTITY TYPE STRING,
QUANTITY_UNIT TYPE STRING,
ORIGDOC_COMP TYPE STRING,
ORIGDOC_LOGSYS TYPE STRING,
ORIGDOC_TYPE TYPE STRING,
ORIGDOC_ID TYPE STRING,
DUE_DATE TYPE STRING,
FINAL_INVOICE TYPE STRING,
QUANTITY_REL TYPE STRING,
POSTING_DATE TYPE STRING,
INVOICE_TYPE TYPE STRING,
DELETION_IND TYPE STRING,
EXCHANGE_RATE TYPE STRING,
EXCHANGE_RATE2 TYPE STRING,
EXCHANGE_RATE3 TYPE STRING,
INVOICE_CAT TYPE STRING,
PINV_COMP TYPE STRING,
PINV_LOGSYS TYPE STRING,
PINV_TYPE TYPE STRING,
PINV_ID TYPE STRING,
BLDAT TYPE STRING,
WWERT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CRMT_SRV_RA_INVITEM_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_CRMT_SRV_RA_INVITEM_STR-SRCDOC_COMP sy-vline 
WA_CRMT_SRV_RA_INVITEM_STR-SRCDOC_LOGSYS sy-vline 
WA_CRMT_SRV_RA_INVITEM_STR-SRCDOC_TYPE sy-vline 
WA_CRMT_SRV_RA_INVITEM_STR-SRCDOC_ID sy-vline 
WA_CRMT_SRV_RA_INVITEM_STR-TIMESTAMP_UTC sy-vline 
WA_CRMT_SRV_RA_INVITEM_STR-HEADER_ID sy-vline 
WA_CRMT_SRV_RA_INVITEM_STR-ITEM_ID sy-vline 
WA_CRMT_SRV_RA_INVITEM_STR-KUNNR sy-vline 
WA_CRMT_SRV_RA_INVITEM_STR-PARTNER sy-vline 
WA_CRMT_SRV_RA_INVITEM_STR-BUKRS sy-vline 
WA_CRMT_SRV_RA_INVITEM_STR-WAERS sy-vline 
WA_CRMT_SRV_RA_INVITEM_STR-HWAER sy-vline 
WA_CRMT_SRV_RA_INVITEM_STR-HWAE2 sy-vline 
WA_CRMT_SRV_RA_INVITEM_STR-HWAE3 sy-vline 
WA_CRMT_SRV_RA_INVITEM_STR-QUANTITY sy-vline 
WA_CRMT_SRV_RA_INVITEM_STR-QUANTITY_UNIT sy-vline 
WA_CRMT_SRV_RA_INVITEM_STR-ORIGDOC_COMP sy-vline 
WA_CRMT_SRV_RA_INVITEM_STR-ORIGDOC_LOGSYS sy-vline 
WA_CRMT_SRV_RA_INVITEM_STR-ORIGDOC_TYPE sy-vline 
WA_CRMT_SRV_RA_INVITEM_STR-ORIGDOC_ID sy-vline 
WA_CRMT_SRV_RA_INVITEM_STR-DUE_DATE sy-vline 
WA_CRMT_SRV_RA_INVITEM_STR-FINAL_INVOICE sy-vline 
WA_CRMT_SRV_RA_INVITEM_STR-QUANTITY_REL sy-vline 
WA_CRMT_SRV_RA_INVITEM_STR-POSTING_DATE sy-vline 
WA_CRMT_SRV_RA_INVITEM_STR-INVOICE_TYPE sy-vline 
WA_CRMT_SRV_RA_INVITEM_STR-DELETION_IND sy-vline 
WA_CRMT_SRV_RA_INVITEM_STR-EXCHANGE_RATE sy-vline 
WA_CRMT_SRV_RA_INVITEM_STR-EXCHANGE_RATE2 sy-vline 
WA_CRMT_SRV_RA_INVITEM_STR-EXCHANGE_RATE3 sy-vline 
WA_CRMT_SRV_RA_INVITEM_STR-INVOICE_CAT sy-vline 
WA_CRMT_SRV_RA_INVITEM_STR-PINV_COMP sy-vline 
WA_CRMT_SRV_RA_INVITEM_STR-PINV_LOGSYS sy-vline 
WA_CRMT_SRV_RA_INVITEM_STR-PINV_TYPE sy-vline 
WA_CRMT_SRV_RA_INVITEM_STR-PINV_ID sy-vline 
WA_CRMT_SRV_RA_INVITEM_STR-BLDAT sy-vline 
WA_CRMT_SRV_RA_INVITEM_STR-WWERT sy-vline      INTO ld_text SEPARATED BY SPACE.

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