ABAP Select data from SAP table ICAINVCFCTP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICAINVCFCTP
*  INTO TABLE @DATA(IT_ICAINVCFCTP2).
*--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_ICAINVCFCTP INDEX 1 INTO DATA(WA_ICAINVCFCTP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICAINVCFCTP>-MANDT = 1.
<ICAINVCFCTP>-CAINVCGCLARIFICATION = 1.
<ICAINVCFCTP>-BUSINESSPARTNER = 1.
<ICAINVCFCTP>-CAAMOUNTINTRANSACTIONCURRENCY = 1.
<ICAINVCFCTP>-CAAPPLICATIONAREA = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICAINVCFCTP-CACLRFCTNCASEISCLARIFIEDAUTOM, sy-vline,
  WA_ICAINVCFCTP-CACLRFCTNCATEGORY, sy-vline,
  WA_ICAINVCFCTP-CACLRFCTNINVCGDOCCHECK, sy-vline,
  WA_ICAINVCFCTP-CACLRFCTNISCLARIFIED, sy-vline,
  WA_ICAINVCFCTP-CACLRFCTNLASTPROCESSEDBYUSER, sy-vline,
  WA_ICAINVCFCTP-CACLRFCTNLASTPROCGSTATUS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICAINVCFCTP 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_ICAINVCFCTP 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_ICAINVCFCTP INTO WA_ICAINVCFCTP.


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

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

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

*Conversion exit ALPHA, internal->external for field CONTRACTACCOUNT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ICAINVCFCTP-CONTRACTACCOUNT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICAINVCFCTP-CONTRACTACCOUNT.
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_ICAINVCFCTP_STR, 
MANDT TYPE STRING,
CAINVCGCLARIFICATION TYPE STRING,
BUSINESSPARTNER TYPE STRING,
CAAMOUNTINTRANSACTIONCURRENCY TYPE STRING,
CAAPPLICATIONAREA TYPE STRING,
CACLRFCTNCASEISCLARIFIEDAUTOM TYPE STRING,
CACLRFCTNCATEGORY TYPE STRING,
CACLRFCTNINVCGDOCCHECK TYPE STRING,
CACLRFCTNISCLARIFIED TYPE STRING,
CACLRFCTNLASTPROCESSEDBYUSER TYPE STRING,
CACLRFCTNLASTPROCGSTATUS TYPE STRING,
CACLRFCTNLOCKEDTODATE TYPE STRING,
CACLRFCTNNMBROFWORKFLOWS TYPE STRING,
CACLRFCTNPROCGSTATUS TYPE STRING,
CACLRFCTNREASON TYPE STRING,
CACLRFCTNRESUBMSNDATE TYPE STRING,
CACLRFCTNSRCEDOCCHECK TYPE STRING,
CACLRFCTNSTATUS TYPE STRING,
CACONTRACT TYPE STRING,
CACURRENCYSOURCEDOCUMENT TYPE STRING,
CAINVCGMASTERDATATYPE TYPE STRING,
CAINVCGPROCESS TYPE STRING,
CAINVCGSOURCEDOCUMENTAMOUNT TYPE STRING,
CAINVCGSOURCEDOCUMENTCAT TYPE STRING,
CAINVCGSOURCEDOCUMENTNUMBER TYPE STRING,
CAINVCGSOURCEDOCUMENTTYPE TYPE STRING,
CAINVCGTARGETPROCESS TYPE STRING,
CAINVOICINGDOCUMENT TYPE STRING,
CASUBAPPLICATION TYPE STRING,
CONTRACTACCOUNT TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREATIONDATE TYPE STRING,
CREATIONTIME TYPE STRING,
SYSTEMMESSAGEIDENTIFICATION TYPE STRING,
SYSTEMMESSAGENUMBER TYPE STRING,
SYSTEMMESSAGETYPE TYPE STRING,
SYSTEMMESSAGEVARIABLE1 TYPE STRING,
SYSTEMMESSAGEVARIABLE2 TYPE STRING,
SYSTEMMESSAGEVARIABLE3 TYPE STRING,
SYSTEMMESSAGEVARIABLE4 TYPE STRING,
TRANSACTIONCURRENCY TYPE STRING,
CACLRFCTNCASEISRESUBMITTED TYPE STRING,
CACLRFCTNCASEISLOCKED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICAINVCFCTP_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_ICAINVCFCTP_STR-MANDT sy-vline 
WA_ICAINVCFCTP_STR-CAINVCGCLARIFICATION sy-vline 
WA_ICAINVCFCTP_STR-BUSINESSPARTNER sy-vline 
WA_ICAINVCFCTP_STR-CAAMOUNTINTRANSACTIONCURRENCY sy-vline 
WA_ICAINVCFCTP_STR-CAAPPLICATIONAREA sy-vline 
WA_ICAINVCFCTP_STR-CACLRFCTNCASEISCLARIFIEDAUTOM sy-vline 
WA_ICAINVCFCTP_STR-CACLRFCTNCATEGORY sy-vline 
WA_ICAINVCFCTP_STR-CACLRFCTNINVCGDOCCHECK sy-vline 
WA_ICAINVCFCTP_STR-CACLRFCTNISCLARIFIED sy-vline 
WA_ICAINVCFCTP_STR-CACLRFCTNLASTPROCESSEDBYUSER sy-vline 
WA_ICAINVCFCTP_STR-CACLRFCTNLASTPROCGSTATUS sy-vline 
WA_ICAINVCFCTP_STR-CACLRFCTNLOCKEDTODATE sy-vline 
WA_ICAINVCFCTP_STR-CACLRFCTNNMBROFWORKFLOWS sy-vline 
WA_ICAINVCFCTP_STR-CACLRFCTNPROCGSTATUS sy-vline 
WA_ICAINVCFCTP_STR-CACLRFCTNREASON sy-vline 
WA_ICAINVCFCTP_STR-CACLRFCTNRESUBMSNDATE sy-vline 
WA_ICAINVCFCTP_STR-CACLRFCTNSRCEDOCCHECK sy-vline 
WA_ICAINVCFCTP_STR-CACLRFCTNSTATUS sy-vline 
WA_ICAINVCFCTP_STR-CACONTRACT sy-vline 
WA_ICAINVCFCTP_STR-CACURRENCYSOURCEDOCUMENT sy-vline 
WA_ICAINVCFCTP_STR-CAINVCGMASTERDATATYPE sy-vline 
WA_ICAINVCFCTP_STR-CAINVCGPROCESS sy-vline 
WA_ICAINVCFCTP_STR-CAINVCGSOURCEDOCUMENTAMOUNT sy-vline 
WA_ICAINVCFCTP_STR-CAINVCGSOURCEDOCUMENTCAT sy-vline 
WA_ICAINVCFCTP_STR-CAINVCGSOURCEDOCUMENTNUMBER sy-vline 
WA_ICAINVCFCTP_STR-CAINVCGSOURCEDOCUMENTTYPE sy-vline 
WA_ICAINVCFCTP_STR-CAINVCGTARGETPROCESS sy-vline 
WA_ICAINVCFCTP_STR-CAINVOICINGDOCUMENT sy-vline 
WA_ICAINVCFCTP_STR-CASUBAPPLICATION sy-vline 
WA_ICAINVCFCTP_STR-CONTRACTACCOUNT sy-vline 
WA_ICAINVCFCTP_STR-CREATEDBYUSER sy-vline 
WA_ICAINVCFCTP_STR-CREATIONDATE sy-vline 
WA_ICAINVCFCTP_STR-CREATIONTIME sy-vline 
WA_ICAINVCFCTP_STR-SYSTEMMESSAGEIDENTIFICATION sy-vline 
WA_ICAINVCFCTP_STR-SYSTEMMESSAGENUMBER sy-vline 
WA_ICAINVCFCTP_STR-SYSTEMMESSAGETYPE sy-vline 
WA_ICAINVCFCTP_STR-SYSTEMMESSAGEVARIABLE1 sy-vline 
WA_ICAINVCFCTP_STR-SYSTEMMESSAGEVARIABLE2 sy-vline 
WA_ICAINVCFCTP_STR-SYSTEMMESSAGEVARIABLE3 sy-vline 
WA_ICAINVCFCTP_STR-SYSTEMMESSAGEVARIABLE4 sy-vline 
WA_ICAINVCFCTP_STR-TRANSACTIONCURRENCY sy-vline 
WA_ICAINVCFCTP_STR-CACLRFCTNCASEISRESUBMITTED sy-vline 
WA_ICAINVCFCTP_STR-CACLRFCTNCASEISLOCKED sy-vline      INTO ld_text SEPARATED BY SPACE.

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