ABAP Select data from SAP table SND_AO_TAX into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP SND_AO_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 SND_AO_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 SND_AO_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_SND_AO_TAX TYPE STANDARD TABLE OF SND_AO_TAX,
      WA_SND_AO_TAX TYPE SND_AO_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: <SND_AO_TAX> TYPE SND_AO_TAX.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SND_AO_TAX
*  INTO TABLE @DATA(IT_SND_AO_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_SND_AO_TAX INDEX 1 INTO DATA(WA_SND_AO_TAX2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SND_AO_TAX>-MANDT = 1.
<SND_AO_TAX>-CONSOLIDATION_ID = 1.
<SND_AO_TAX>-TAXTYPE = 1.
<SND_AO_TAX>-TAXCODE = 1.
<SND_AO_TAX>-MWSKZ = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SND_AO_TAX-TAXCOUNTRYREGION, sy-vline,
  WA_SND_AO_TAX-TAXPERCENTAGE, sy-vline,
  WA_SND_AO_TAX-TAXAMOUNT, sy-vline,
  WA_SND_AO_TAX-TAXCURRENCY, sy-vline,
  WA_SND_AO_TAX-DESCRIPTION, sy-vline,
  WA_SND_AO_TAX-TAXEXPIRATIONDATE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SND_AO_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_SND_AO_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_SND_AO_TAX INTO WA_SND_AO_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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_SND_AO_TAX_STR, 
MANDT TYPE STRING,
CONSOLIDATION_ID TYPE STRING,
TAXTYPE TYPE STRING,
TAXCODE TYPE STRING,
MWSKZ TYPE STRING,
TAXCOUNTRYREGION TYPE STRING,
TAXPERCENTAGE TYPE STRING,
TAXAMOUNT TYPE STRING,
TAXCURRENCY TYPE STRING,
DESCRIPTION TYPE STRING,
TAXEXPIRATIONDATE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SND_AO_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_SND_AO_TAX_STR-MANDT sy-vline 
WA_SND_AO_TAX_STR-CONSOLIDATION_ID sy-vline 
WA_SND_AO_TAX_STR-TAXTYPE sy-vline 
WA_SND_AO_TAX_STR-TAXCODE sy-vline 
WA_SND_AO_TAX_STR-MWSKZ sy-vline 
WA_SND_AO_TAX_STR-TAXCOUNTRYREGION sy-vline 
WA_SND_AO_TAX_STR-TAXPERCENTAGE sy-vline 
WA_SND_AO_TAX_STR-TAXAMOUNT sy-vline 
WA_SND_AO_TAX_STR-TAXCURRENCY sy-vline 
WA_SND_AO_TAX_STR-DESCRIPTION sy-vline 
WA_SND_AO_TAX_STR-TAXEXPIRATIONDATE sy-vline      INTO ld_text SEPARATED BY SPACE.

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