ABAP Select data from SAP table CTAXDECTAXCODE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CTAXDECTAXCODE
*  INTO TABLE @DATA(IT_CTAXDECTAXCODE2).
*--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_CTAXDECTAXCODE INDEX 1 INTO DATA(WA_CTAXDECTAXCODE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CTAXDECTAXCODE>-MANDT = 1.
<CTAXDECTAXCODE>-TAXBOX = 1.
<CTAXDECTAXCODE>-TAXBASEAMOUNTTAXBOX = 1.
<CTAXDECTAXCODE>-COMPANYCODE = 1.
<CTAXDECTAXCODE>-FISCALYEAR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CTAXDECTAXCODE-POSTINGFISCALPERIOD, sy-vline,
  WA_CTAXDECTAXCODE-TAXCODE, sy-vline,
  WA_CTAXDECTAXCODE-TAXRATEVALIDITYSTARTDATE, sy-vline,
  WA_CTAXDECTAXCODE-TRANSACTIONTYPEDETERMINATION, sy-vline,
  WA_CTAXDECTAXCODE-COMPANYCODECURRENCY, sy-vline,
  WA_CTAXDECTAXCODE-TAXRATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CTAXDECTAXCODE 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_CTAXDECTAXCODE 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_CTAXDECTAXCODE INTO WA_CTAXDECTAXCODE.


*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_CTAXDECTAXCODE-FISCALYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CTAXDECTAXCODE-FISCALYEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC112, internal->external for field TAXRATE
CALL FUNCTION 'CONVERSION_EXIT_AC112_OUTPUT'
  EXPORTING
    input =                      WA_CTAXDECTAXCODE-TAXRATE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CTAXDECTAXCODE-TAXRATE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field CALCULATEDTXAMTINCOCODECRCY
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_CTAXDECTAXCODE-CALCULATEDTXAMTINCOCODECRCY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CTAXDECTAXCODE-CALCULATEDTXAMTINCOCODECRCY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field TAXRECNCLNDIFFAMTINCOCODECRCY
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_CTAXDECTAXCODE-TAXRECNCLNDIFFAMTINCOCODECRCY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CTAXDECTAXCODE-TAXRECNCLNDIFFAMTINCOCODECRCY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field SUBTOTALAMOUNTINCOCODECRCY
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_CTAXDECTAXCODE-SUBTOTALAMOUNTINCOCODECRCY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CTAXDECTAXCODE-SUBTOTALAMOUNTINCOCODECRCY.
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_CTAXDECTAXCODE_STR, 
MANDT TYPE STRING,
TAXBOX TYPE STRING,
TAXBASEAMOUNTTAXBOX TYPE STRING,
COMPANYCODE TYPE STRING,
FISCALYEAR TYPE STRING,
POSTINGFISCALPERIOD TYPE STRING,
TAXCODE TYPE STRING,
TAXRATEVALIDITYSTARTDATE TYPE STRING,
TRANSACTIONTYPEDETERMINATION TYPE STRING,
COMPANYCODECURRENCY TYPE STRING,
TAXRATE TYPE STRING,
CASHDISCOUNT1PERCENT TYPE STRING,
CASHDISCOUNTBASEAMTISNETAMT TYPE STRING,
TAXBASEAMOUNTISNETAMOUNT TYPE STRING,
TAXBASEAMOUNTINCOCODECRCY TYPE STRING,
CALCULATEDTXAMTINCOCODECRCY TYPE STRING,
TAXAMOUNTINCOCODECRCY TYPE STRING,
TAXRECNCLNDIFFAMTINCOCODECRCY TYPE STRING,
SUBTOTALAMOUNTINCOCODECRCY TYPE STRING,
TAXCALCULATIONPROCEDURE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CTAXDECTAXCODE_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_CTAXDECTAXCODE_STR-MANDT sy-vline 
WA_CTAXDECTAXCODE_STR-TAXBOX sy-vline 
WA_CTAXDECTAXCODE_STR-TAXBASEAMOUNTTAXBOX sy-vline 
WA_CTAXDECTAXCODE_STR-COMPANYCODE sy-vline 
WA_CTAXDECTAXCODE_STR-FISCALYEAR sy-vline 
WA_CTAXDECTAXCODE_STR-POSTINGFISCALPERIOD sy-vline 
WA_CTAXDECTAXCODE_STR-TAXCODE sy-vline 
WA_CTAXDECTAXCODE_STR-TAXRATEVALIDITYSTARTDATE sy-vline 
WA_CTAXDECTAXCODE_STR-TRANSACTIONTYPEDETERMINATION sy-vline 
WA_CTAXDECTAXCODE_STR-COMPANYCODECURRENCY sy-vline 
WA_CTAXDECTAXCODE_STR-TAXRATE sy-vline 
WA_CTAXDECTAXCODE_STR-CASHDISCOUNT1PERCENT sy-vline 
WA_CTAXDECTAXCODE_STR-CASHDISCOUNTBASEAMTISNETAMT sy-vline 
WA_CTAXDECTAXCODE_STR-TAXBASEAMOUNTISNETAMOUNT sy-vline 
WA_CTAXDECTAXCODE_STR-TAXBASEAMOUNTINCOCODECRCY sy-vline 
WA_CTAXDECTAXCODE_STR-CALCULATEDTXAMTINCOCODECRCY sy-vline 
WA_CTAXDECTAXCODE_STR-TAXAMOUNTINCOCODECRCY sy-vline 
WA_CTAXDECTAXCODE_STR-TAXRECNCLNDIFFAMTINCOCODECRCY sy-vline 
WA_CTAXDECTAXCODE_STR-SUBTOTALAMOUNTINCOCODECRCY sy-vline 
WA_CTAXDECTAXCODE_STR-TAXCALCULATIONPROCEDURE sy-vline      INTO ld_text SEPARATED BY SPACE.

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