ABAP Select data from SAP table CNLSAFTITEMCAC into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CNLSAFTITEMCAC
*  INTO TABLE @DATA(IT_CNLSAFTITEMCAC2).
*--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_CNLSAFTITEMCAC INDEX 1 INTO DATA(WA_CNLSAFTITEMCAC2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CNLSAFTITEMCAC>-MANDT = 1.
<CNLSAFTITEMCAC>-COMPANYCODE = 1.
<CNLSAFTITEMCAC>-FISCALYEAR = 1.
<CNLSAFTITEMCAC>-CADOCUMENTNUMBER = 1.
<CNLSAFTITEMCAC>-CAGLITEMNUMBER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CNLSAFTITEMCAC-COMPANYCODECURRENCY, sy-vline,
  WA_CNLSAFTITEMCAC-GLACCOUNT, sy-vline,
  WA_CNLSAFTITEMCAC-POSTINGDATE, sy-vline,
  WA_CNLSAFTITEMCAC-DOCUMENTITEMTEXT, sy-vline,
  WA_CNLSAFTITEMCAC-AMOUNTINCOMPANYCODECURRENCY, sy-vline,
  WA_CNLSAFTITEMCAC-DEBITCREDITCODE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CNLSAFTITEMCAC 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_CNLSAFTITEMCAC 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_CNLSAFTITEMCAC INTO WA_CNLSAFTITEMCAC.


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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field COSTCENTER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CNLSAFTITEMCAC-COSTCENTER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CNLSAFTITEMCAC-COSTCENTER.
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_CNLSAFTITEMCAC_STR, 
MANDT TYPE STRING,
COMPANYCODE TYPE STRING,
FISCALYEAR TYPE STRING,
CADOCUMENTNUMBER TYPE STRING,
CAGLITEMNUMBER TYPE STRING,
COMPANYCODECURRENCY TYPE STRING,
GLACCOUNT TYPE STRING,
POSTINGDATE TYPE STRING,
DOCUMENTITEMTEXT TYPE STRING,
AMOUNTINCOMPANYCODECURRENCY TYPE STRING,
DEBITCREDITCODE TYPE STRING,
BUSINESSPARTNER TYPE STRING,
CAREVERSALDOCUMENTNUMBER TYPE STRING,
CAREFERENCEDOCUMENT TYPE STRING,
QUANTITY TYPE STRING,
COSTCENTER TYPE STRING,
TAXCODE TYPE STRING,
TAXAMOUNT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CNLSAFTITEMCAC_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_CNLSAFTITEMCAC_STR-MANDT sy-vline 
WA_CNLSAFTITEMCAC_STR-COMPANYCODE sy-vline 
WA_CNLSAFTITEMCAC_STR-FISCALYEAR sy-vline 
WA_CNLSAFTITEMCAC_STR-CADOCUMENTNUMBER sy-vline 
WA_CNLSAFTITEMCAC_STR-CAGLITEMNUMBER sy-vline 
WA_CNLSAFTITEMCAC_STR-COMPANYCODECURRENCY sy-vline 
WA_CNLSAFTITEMCAC_STR-GLACCOUNT sy-vline 
WA_CNLSAFTITEMCAC_STR-POSTINGDATE sy-vline 
WA_CNLSAFTITEMCAC_STR-DOCUMENTITEMTEXT sy-vline 
WA_CNLSAFTITEMCAC_STR-AMOUNTINCOMPANYCODECURRENCY sy-vline 
WA_CNLSAFTITEMCAC_STR-DEBITCREDITCODE sy-vline 
WA_CNLSAFTITEMCAC_STR-BUSINESSPARTNER sy-vline 
WA_CNLSAFTITEMCAC_STR-CAREVERSALDOCUMENTNUMBER sy-vline 
WA_CNLSAFTITEMCAC_STR-CAREFERENCEDOCUMENT sy-vline 
WA_CNLSAFTITEMCAC_STR-QUANTITY sy-vline 
WA_CNLSAFTITEMCAC_STR-COSTCENTER sy-vline 
WA_CNLSAFTITEMCAC_STR-TAXCODE sy-vline 
WA_CNLSAFTITEMCAC_STR-TAXAMOUNT sy-vline      INTO ld_text SEPARATED BY SPACE.

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