ABAP Select data from SAP table ICADCDOC into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ICADCDOC 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 ICADCDOC. 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 ICADCDOC 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_ICADCDOC TYPE STANDARD TABLE OF ICADCDOC,
      WA_ICADCDOC TYPE ICADCDOC,
      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: <ICADCDOC> TYPE ICADCDOC.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICADCDOC
*  INTO TABLE @DATA(IT_ICADCDOC2).
*--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_ICADCDOC INDEX 1 INTO DATA(WA_ICADCDOC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICADCDOC>-MANDT = 1.
<ICADCDOC>-CADOCUMENTNUMBER = 1.
<ICADCDOC>-CASEUNIQUEID = 1.
<ICADCDOC>-OBJECTTYPE = 1.
<ICADCDOC>-OBJECTKEY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICADCDOC-RELATIONSHIPNUMBER, sy-vline,
  WA_ICADCDOC-CAAMOUNTINTRANSACTIONCURRENCY, sy-vline,
  WA_ICADCDOC-TRANSACTIONCURRENCY, sy-vline,
  WA_ICADCDOC-CAMAINTRANSACTION, sy-vline,
  WA_ICADCDOC-CASUBTRANSACTION, sy-vline,
  WA_ICADCDOC-CACONTRACT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICADCDOC 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_ICADCDOC 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_ICADCDOC INTO WA_ICADCDOC.


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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field CAREVERSEDDOCUMENTNUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ICADCDOC-CAREVERSEDDOCUMENTNUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICADCDOC-CAREVERSEDDOCUMENTNUMBER.
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_ICADCDOC_STR, 
MANDT TYPE STRING,
CADOCUMENTNUMBER TYPE STRING,
CASEUNIQUEID TYPE STRING,
OBJECTTYPE TYPE STRING,
OBJECTKEY TYPE STRING,
RELATIONSHIPNUMBER TYPE STRING,
CAAMOUNTINTRANSACTIONCURRENCY TYPE STRING,
TRANSACTIONCURRENCY TYPE STRING,
CAMAINTRANSACTION TYPE STRING,
CASUBTRANSACTION TYPE STRING,
CACONTRACT TYPE STRING,
CASUBAPPLICATION TYPE STRING,
CONTRACTACCOUNT TYPE STRING,
BUSINESSPARTNER TYPE STRING,
CANETDUEDATE TYPE STRING,
CADEFERRALDATE TYPE STRING,
CACLEARINGDATE TYPE STRING,
CACLEARINGREASONNAME TYPE STRING,
CACLEARINGREASON TYPE STRING,
OPENAMOUNTINTRANSCRCY TYPE STRING,
CAMAINTRANSACTIONNAME TYPE STRING,
CASUBTRANSACTIONNAME TYPE STRING,
CREATIONDATE TYPE STRING,
CREATIONTIME TYPE STRING,
CADOCUMENTORIGINCODENAME TYPE STRING,
CREATEDBYUSER TYPE STRING,
CADOCUMENTORIGINCODE TYPE STRING,
DOCUMENTDATE TYPE STRING,
CAPOSTINGDATE TYPE STRING,
CAREFERENCEDOCUMENT TYPE STRING,
CADOCUMENTTYPENAME TYPE STRING,
CARECONCILIATIONKEY TYPE STRING,
CAREVERSALDOCUMENTNUMBER TYPE STRING,
CAREVERSEDDOCUMENTNUMBER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICADCDOC_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_ICADCDOC_STR-MANDT sy-vline 
WA_ICADCDOC_STR-CADOCUMENTNUMBER sy-vline 
WA_ICADCDOC_STR-CASEUNIQUEID sy-vline 
WA_ICADCDOC_STR-OBJECTTYPE sy-vline 
WA_ICADCDOC_STR-OBJECTKEY sy-vline 
WA_ICADCDOC_STR-RELATIONSHIPNUMBER sy-vline 
WA_ICADCDOC_STR-CAAMOUNTINTRANSACTIONCURRENCY sy-vline 
WA_ICADCDOC_STR-TRANSACTIONCURRENCY sy-vline 
WA_ICADCDOC_STR-CAMAINTRANSACTION sy-vline 
WA_ICADCDOC_STR-CASUBTRANSACTION sy-vline 
WA_ICADCDOC_STR-CACONTRACT sy-vline 
WA_ICADCDOC_STR-CASUBAPPLICATION sy-vline 
WA_ICADCDOC_STR-CONTRACTACCOUNT sy-vline 
WA_ICADCDOC_STR-BUSINESSPARTNER sy-vline 
WA_ICADCDOC_STR-CANETDUEDATE sy-vline 
WA_ICADCDOC_STR-CADEFERRALDATE sy-vline 
WA_ICADCDOC_STR-CACLEARINGDATE sy-vline 
WA_ICADCDOC_STR-CACLEARINGREASONNAME sy-vline 
WA_ICADCDOC_STR-CACLEARINGREASON sy-vline 
WA_ICADCDOC_STR-OPENAMOUNTINTRANSCRCY sy-vline 
WA_ICADCDOC_STR-CAMAINTRANSACTIONNAME sy-vline 
WA_ICADCDOC_STR-CASUBTRANSACTIONNAME sy-vline 
WA_ICADCDOC_STR-CREATIONDATE sy-vline 
WA_ICADCDOC_STR-CREATIONTIME sy-vline 
WA_ICADCDOC_STR-CADOCUMENTORIGINCODENAME sy-vline 
WA_ICADCDOC_STR-CREATEDBYUSER sy-vline 
WA_ICADCDOC_STR-CADOCUMENTORIGINCODE sy-vline 
WA_ICADCDOC_STR-DOCUMENTDATE sy-vline 
WA_ICADCDOC_STR-CAPOSTINGDATE sy-vline 
WA_ICADCDOC_STR-CAREFERENCEDOCUMENT sy-vline 
WA_ICADCDOC_STR-CADOCUMENTTYPENAME sy-vline 
WA_ICADCDOC_STR-CARECONCILIATIONKEY sy-vline 
WA_ICADCDOC_STR-CAREVERSALDOCUMENTNUMBER sy-vline 
WA_ICADCDOC_STR-CAREVERSEDDOCUMENTNUMBER sy-vline      INTO ld_text SEPARATED BY SPACE.

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