ABAP Select data from SAP table ICADCDOCTP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICADCDOCTP
*  INTO TABLE @DATA(IT_ICADCDOCTP2).
*--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_ICADCDOCTP INDEX 1 INTO DATA(WA_ICADCDOCTP2).


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

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

ENDLOOP.

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

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


*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_ICADCDOCTP-CADOCUMENTNUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICADCDOCTP-CADOCUMENTNUMBER.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field CAREVERSEDDOCUMENTNUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ICADCDOCTP-CAREVERSEDDOCUMENTNUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICADCDOCTP-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_ICADCDOCTP_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,
CONTRACTACCOUNT TYPE STRING,
BUSINESSPARTNER TYPE STRING,
CANETDUEDATE TYPE STRING,
CADEFERRALDATE TYPE STRING,
CACLEARINGDATE TYPE STRING,
CACLEARINGREASON TYPE STRING,
OPENAMOUNTINTRANSCRCY TYPE STRING,
CAMAINTRANSACTIONNAME TYPE STRING,
CASUBTRANSACTIONNAME TYPE STRING,
CACLEARINGREASONNAME 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_ICADCDOCTP_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_ICADCDOCTP_STR-MANDT sy-vline 
WA_ICADCDOCTP_STR-CADOCUMENTNUMBER sy-vline 
WA_ICADCDOCTP_STR-CASEUNIQUEID sy-vline 
WA_ICADCDOCTP_STR-OBJECTTYPE sy-vline 
WA_ICADCDOCTP_STR-OBJECTKEY sy-vline 
WA_ICADCDOCTP_STR-RELATIONSHIPNUMBER sy-vline 
WA_ICADCDOCTP_STR-CAAMOUNTINTRANSACTIONCURRENCY sy-vline 
WA_ICADCDOCTP_STR-TRANSACTIONCURRENCY sy-vline 
WA_ICADCDOCTP_STR-CAMAINTRANSACTION sy-vline 
WA_ICADCDOCTP_STR-CASUBTRANSACTION sy-vline 
WA_ICADCDOCTP_STR-CACONTRACT sy-vline 
WA_ICADCDOCTP_STR-CONTRACTACCOUNT sy-vline 
WA_ICADCDOCTP_STR-BUSINESSPARTNER sy-vline 
WA_ICADCDOCTP_STR-CANETDUEDATE sy-vline 
WA_ICADCDOCTP_STR-CADEFERRALDATE sy-vline 
WA_ICADCDOCTP_STR-CACLEARINGDATE sy-vline 
WA_ICADCDOCTP_STR-CACLEARINGREASON sy-vline 
WA_ICADCDOCTP_STR-OPENAMOUNTINTRANSCRCY sy-vline 
WA_ICADCDOCTP_STR-CAMAINTRANSACTIONNAME sy-vline 
WA_ICADCDOCTP_STR-CASUBTRANSACTIONNAME sy-vline 
WA_ICADCDOCTP_STR-CACLEARINGREASONNAME sy-vline 
WA_ICADCDOCTP_STR-CREATIONDATE sy-vline 
WA_ICADCDOCTP_STR-CREATIONTIME sy-vline 
WA_ICADCDOCTP_STR-CADOCUMENTORIGINCODENAME sy-vline 
WA_ICADCDOCTP_STR-CREATEDBYUSER sy-vline 
WA_ICADCDOCTP_STR-CADOCUMENTORIGINCODE sy-vline 
WA_ICADCDOCTP_STR-DOCUMENTDATE sy-vline 
WA_ICADCDOCTP_STR-CAPOSTINGDATE sy-vline 
WA_ICADCDOCTP_STR-CAREFERENCEDOCUMENT sy-vline 
WA_ICADCDOCTP_STR-CADOCUMENTTYPENAME sy-vline 
WA_ICADCDOCTP_STR-CARECONCILIATIONKEY sy-vline 
WA_ICADCDOCTP_STR-CAREVERSALDOCUMENTNUMBER sy-vline 
WA_ICADCDOCTP_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.