ABAP Select data from SAP table CRUEXCHDIFF into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CRUEXCHDIFF
*  INTO TABLE @DATA(IT_CRUEXCHDIFF2).
*--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_CRUEXCHDIFF INDEX 1 INTO DATA(WA_CRUEXCHDIFF2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CRUEXCHDIFF>-MANDT = 1.
<CRUEXCHDIFF>-COMPANYCODE = 1.
<CRUEXCHDIFF>-ACCOUNTINGDOCUMENT = 1.
<CRUEXCHDIFF>-FISCALYEAR = 1.
<CRUEXCHDIFF>-ACCOUNTINGDOCUMENTITEM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CRUEXCHDIFF-CONTROLLINGAREACURRENCYROLE, sy-vline,
  WA_CRUEXCHDIFF-ACTIVEVALUATIONAREA, sy-vline,
  WA_CRUEXCHDIFF-STARTINGBALANCEAMTINCOCODECRCY, sy-vline,
  WA_CRUEXCHDIFF-ENDINGBALANCEAMTINCOCODECRCY, sy-vline,
  WA_CRUEXCHDIFF-COMPANYCODECURRENCY, sy-vline,
  WA_CRUEXCHDIFF-FRGNCRCYVALNDELTALOGICISACTIVE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CRUEXCHDIFF 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_CRUEXCHDIFF 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_CRUEXCHDIFF INTO WA_CRUEXCHDIFF.


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

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

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

*Conversion exit ALPHA, internal->external for field DEBTOR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CRUEXCHDIFF-DEBTOR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRUEXCHDIFF-DEBTOR.
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_CRUEXCHDIFF_STR, 
MANDT TYPE STRING,
COMPANYCODE TYPE STRING,
ACCOUNTINGDOCUMENT TYPE STRING,
FISCALYEAR TYPE STRING,
ACCOUNTINGDOCUMENTITEM TYPE STRING,
CONTROLLINGAREACURRENCYROLE TYPE STRING,
ACTIVEVALUATIONAREA TYPE STRING,
STARTINGBALANCEAMTINCOCODECRCY TYPE STRING,
ENDINGBALANCEAMTINCOCODECRCY TYPE STRING,
COMPANYCODECURRENCY TYPE STRING,
FRGNCRCYVALNDELTALOGICISACTIVE TYPE STRING,
ASSIGNMENTREFERENCE TYPE STRING,
CREDITOR TYPE STRING,
DEBTOR TYPE STRING,
BUSINESSPARTNER TYPE STRING,
POSTINGDATE TYPE STRING,
CNDNCONTRTYPE TYPE STRING,
AUTHORIZATIONGROUP TYPE STRING,
SUPPLIERFINSAUTHORIZATIONGRP TYPE STRING,
CUSTOMERFINSAUTHORIZATIONGRP TYPE STRING,
SUPPLIERCOMPANYAUTHZNGROUP TYPE STRING,
CUSTOMERCOMPANYAUTHZNGROUP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CRUEXCHDIFF_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_CRUEXCHDIFF_STR-MANDT sy-vline 
WA_CRUEXCHDIFF_STR-COMPANYCODE sy-vline 
WA_CRUEXCHDIFF_STR-ACCOUNTINGDOCUMENT sy-vline 
WA_CRUEXCHDIFF_STR-FISCALYEAR sy-vline 
WA_CRUEXCHDIFF_STR-ACCOUNTINGDOCUMENTITEM sy-vline 
WA_CRUEXCHDIFF_STR-CONTROLLINGAREACURRENCYROLE sy-vline 
WA_CRUEXCHDIFF_STR-ACTIVEVALUATIONAREA sy-vline 
WA_CRUEXCHDIFF_STR-STARTINGBALANCEAMTINCOCODECRCY sy-vline 
WA_CRUEXCHDIFF_STR-ENDINGBALANCEAMTINCOCODECRCY sy-vline 
WA_CRUEXCHDIFF_STR-COMPANYCODECURRENCY sy-vline 
WA_CRUEXCHDIFF_STR-FRGNCRCYVALNDELTALOGICISACTIVE sy-vline 
WA_CRUEXCHDIFF_STR-ASSIGNMENTREFERENCE sy-vline 
WA_CRUEXCHDIFF_STR-CREDITOR sy-vline 
WA_CRUEXCHDIFF_STR-DEBTOR sy-vline 
WA_CRUEXCHDIFF_STR-BUSINESSPARTNER sy-vline 
WA_CRUEXCHDIFF_STR-POSTINGDATE sy-vline 
WA_CRUEXCHDIFF_STR-CNDNCONTRTYPE sy-vline 
WA_CRUEXCHDIFF_STR-AUTHORIZATIONGROUP sy-vline 
WA_CRUEXCHDIFF_STR-SUPPLIERFINSAUTHORIZATIONGRP sy-vline 
WA_CRUEXCHDIFF_STR-CUSTOMERFINSAUTHORIZATIONGRP sy-vline 
WA_CRUEXCHDIFF_STR-SUPPLIERCOMPANYAUTHZNGROUP sy-vline 
WA_CRUEXCHDIFF_STR-CUSTOMERCOMPANYAUTHZNGROUP sy-vline      INTO ld_text SEPARATED BY SPACE.

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