ABAP Select data from SAP table IDTW_S_CUS_ZERO_TAX into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IDTW_S_CUS_ZERO_TAX
*  INTO TABLE @DATA(IT_IDTW_S_CUS_ZERO_TAX2).
*--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_IDTW_S_CUS_ZERO_TAX INDEX 1 INTO DATA(WA_IDTW_S_CUS_ZERO_TAX2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IDTW_S_CUS_ZERO_TAX>-DOC_NO = 1.
<IDTW_S_CUS_ZERO_TAX>-BUKRS = 1.
<IDTW_S_CUS_ZERO_TAX>-GJAHR = 1.
<IDTW_S_CUS_ZERO_TAX>-EXP_TYPE = 1.
<IDTW_S_CUS_ZERO_TAX>-CUST_APPROACH = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IDTW_S_CUS_ZERO_TAX-EXP_MODE, sy-vline,
  WA_IDTW_S_CUS_ZERO_TAX-CUST_DOC_NO, sy-vline,
  WA_IDTW_S_CUS_ZERO_TAX-NO_CUST_DOC, sy-vline,
  WA_IDTW_S_CUS_ZERO_TAX-EXP_DATE, sy-vline,
  WA_IDTW_S_CUS_ZERO_TAX-EXPORT_AMOUNT, sy-vline,
  WA_IDTW_S_CUS_ZERO_TAX-IDTW_EXT1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IDTW_S_CUS_ZERO_TAX 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_IDTW_S_CUS_ZERO_TAX 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_IDTW_S_CUS_ZERO_TAX INTO WA_IDTW_S_CUS_ZERO_TAX.


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

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

*Conversion exit AU132, internal->external for field EXPORT_AMOUNT
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_IDTW_S_CUS_ZERO_TAX-EXPORT_AMOUNT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IDTW_S_CUS_ZERO_TAX-EXPORT_AMOUNT.
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_IDTW_S_CUS_ZERO_TAX_STR, 
DOC_NO TYPE STRING,
BUKRS TYPE STRING,
GJAHR TYPE STRING,
EXP_TYPE TYPE STRING,
CUST_APPROACH TYPE STRING,
EXP_MODE TYPE STRING,
CUST_DOC_NO TYPE STRING,
NO_CUST_DOC TYPE STRING,
EXP_DATE TYPE STRING,
EXPORT_AMOUNT TYPE STRING,
IDTW_EXT1 TYPE STRING,
IDTW_EXT2 TYPE STRING,
IDTW_EXT3 TYPE STRING,
IDTW_EXT4 TYPE STRING,
IDTW_EXT5 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IDTW_S_CUS_ZERO_TAX_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_IDTW_S_CUS_ZERO_TAX_STR-DOC_NO sy-vline 
WA_IDTW_S_CUS_ZERO_TAX_STR-BUKRS sy-vline 
WA_IDTW_S_CUS_ZERO_TAX_STR-GJAHR sy-vline 
WA_IDTW_S_CUS_ZERO_TAX_STR-EXP_TYPE sy-vline 
WA_IDTW_S_CUS_ZERO_TAX_STR-CUST_APPROACH sy-vline 
WA_IDTW_S_CUS_ZERO_TAX_STR-EXP_MODE sy-vline 
WA_IDTW_S_CUS_ZERO_TAX_STR-CUST_DOC_NO sy-vline 
WA_IDTW_S_CUS_ZERO_TAX_STR-NO_CUST_DOC sy-vline 
WA_IDTW_S_CUS_ZERO_TAX_STR-EXP_DATE sy-vline 
WA_IDTW_S_CUS_ZERO_TAX_STR-EXPORT_AMOUNT sy-vline 
WA_IDTW_S_CUS_ZERO_TAX_STR-IDTW_EXT1 sy-vline 
WA_IDTW_S_CUS_ZERO_TAX_STR-IDTW_EXT2 sy-vline 
WA_IDTW_S_CUS_ZERO_TAX_STR-IDTW_EXT3 sy-vline 
WA_IDTW_S_CUS_ZERO_TAX_STR-IDTW_EXT4 sy-vline 
WA_IDTW_S_CUS_ZERO_TAX_STR-IDTW_EXT5 sy-vline      INTO ld_text SEPARATED BY SPACE.

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