ABAP Select data from SAP table ITRDCMPDOCITMB into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ITRDCMPDOCITMB
*  INTO TABLE @DATA(IT_ITRDCMPDOCITMB2).
*--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_ITRDCMPDOCITMB INDEX 1 INTO DATA(WA_ITRDCMPDOCITMB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ITRDCMPDOCITMB>-MANDT = 1.
<ITRDCMPDOCITMB>-TRDCMPLNCDOCITEMUUID = 1.
<ITRDCMPDOCITMB>-REFERENCEDOCUMENTCATEGORY = 1.
<ITRDCMPDOCITMB>-REFERENCEDOCUMENT = 1.
<ITRDCMPDOCITMB>-REFERENCEDOCUMENTITEM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ITRDCMPDOCITMB-TRDCMPLNCDOCCATEGORY, sy-vline,
  WA_ITRDCMPDOCITMB-TRADECOMPLIANCEDOCUMENT, sy-vline,
  WA_ITRDCMPDOCITMB-TRDCMPLNCDOCITEM, sy-vline,
  WA_ITRDCMPDOCITMB-TRDCMPLNCCHECKDRCTN, sy-vline,
  WA_ITRDCMPDOCITMB-COMPANYCODE, sy-vline,
  WA_ITRDCMPDOCITMB-PLANT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ITRDCMPDOCITMB 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_ITRDCMPDOCITMB 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_ITRDCMPDOCITMB INTO WA_ITRDCMPDOCITMB.


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

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

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

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

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

*Conversion exit ALPHA, internal->external for field BUSINESSPARTNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ITRDCMPDOCITMB-BUSINESSPARTNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ITRDCMPDOCITMB-BUSINESSPARTNER.
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_ITRDCMPDOCITMB_STR, 
MANDT TYPE STRING,
TRDCMPLNCDOCITEMUUID TYPE STRING,
REFERENCEDOCUMENTCATEGORY TYPE STRING,
REFERENCEDOCUMENT TYPE STRING,
REFERENCEDOCUMENTITEM TYPE STRING,
TRDCMPLNCDOCCATEGORY TYPE STRING,
TRADECOMPLIANCEDOCUMENT TYPE STRING,
TRDCMPLNCDOCITEM TYPE STRING,
TRDCMPLNCCHECKDRCTN TYPE STRING,
COMPANYCODE TYPE STRING,
PLANT TYPE STRING,
PRODUCT TYPE STRING,
COUNTRY TYPE STRING,
BUSINESSPARTNER TYPE STRING,
REFERENCEDOCUMENTCREATIONDATE TYPE STRING,
TRDCMPLNCDOCISOUTBOUND TYPE STRING,
TRDCMPLNCDOCISINBOUND TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ITRDCMPDOCITMB_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_ITRDCMPDOCITMB_STR-MANDT sy-vline 
WA_ITRDCMPDOCITMB_STR-TRDCMPLNCDOCITEMUUID sy-vline 
WA_ITRDCMPDOCITMB_STR-REFERENCEDOCUMENTCATEGORY sy-vline 
WA_ITRDCMPDOCITMB_STR-REFERENCEDOCUMENT sy-vline 
WA_ITRDCMPDOCITMB_STR-REFERENCEDOCUMENTITEM sy-vline 
WA_ITRDCMPDOCITMB_STR-TRDCMPLNCDOCCATEGORY sy-vline 
WA_ITRDCMPDOCITMB_STR-TRADECOMPLIANCEDOCUMENT sy-vline 
WA_ITRDCMPDOCITMB_STR-TRDCMPLNCDOCITEM sy-vline 
WA_ITRDCMPDOCITMB_STR-TRDCMPLNCCHECKDRCTN sy-vline 
WA_ITRDCMPDOCITMB_STR-COMPANYCODE sy-vline 
WA_ITRDCMPDOCITMB_STR-PLANT sy-vline 
WA_ITRDCMPDOCITMB_STR-PRODUCT sy-vline 
WA_ITRDCMPDOCITMB_STR-COUNTRY sy-vline 
WA_ITRDCMPDOCITMB_STR-BUSINESSPARTNER sy-vline 
WA_ITRDCMPDOCITMB_STR-REFERENCEDOCUMENTCREATIONDATE sy-vline 
WA_ITRDCMPDOCITMB_STR-TRDCMPLNCDOCISOUTBOUND sy-vline 
WA_ITRDCMPDOCITMB_STR-TRDCMPLNCDOCISINBOUND sy-vline      INTO ld_text SEPARATED BY SPACE.

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