ABAP Select data from SAP table /PF1/STR_TAXINFORMATION3 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /PF1/STR_TAXINFORMATION3 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 /PF1/STR_TAXINFORMATION3. 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 /PF1/STR_TAXINFORMATION3 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_/PF1/STR_TAXINFORMATION3 TYPE STANDARD TABLE OF /PF1/STR_TAXINFORMATION3,
      WA_/PF1/STR_TAXINFORMATION3 TYPE /PF1/STR_TAXINFORMATION3,
      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: </PF1/STR_TAXINFORMATION3> TYPE /PF1/STR_TAXINFORMATION3.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_/PF1/STR_TAXINFORMATION3.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /PF1/STR_TAXINFORMATION3
  INTO TABLE IT_/PF1/STR_TAXINFORMATION3.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /PF1/STR_TAXINFORMATION3
*  INTO TABLE @DATA(IT_/PF1/STR_TAXINFORMATION32).
*--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_/PF1/STR_TAXINFORMATION3 INDEX 1 INTO DATA(WA_/PF1/STR_TAXINFORMATION32).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/PF1/STR_TAXINFORMATION3 ASSIGNING </PF1/STR_TAXINFORMATION3>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</PF1/STR_TAXINFORMATION3>-CDTR = 1.
</PF1/STR_TAXINFORMATION3>-TAXID = 1.
</PF1/STR_TAXINFORMATION3>-REGNID = 1.
</PF1/STR_TAXINFORMATION3>-TAXTP = 1.
</PF1/STR_TAXINFORMATION3>-DBTR = 1.

ENDLOOP.

LOOP AT IT_/PF1/STR_TAXINFORMATION3 INTO WA_/PF1/STR_TAXINFORMATION3.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/PF1/STR_TAXINFORMATION3-TAXID, sy-vline,
  WA_/PF1/STR_TAXINFORMATION3-REGNID, sy-vline,
  WA_/PF1/STR_TAXINFORMATION3-TAXTP, sy-vline,
  WA_/PF1/STR_TAXINFORMATION3-AUTHSTN, sy-vline,
  WA_/PF1/STR_TAXINFORMATION3-TITL, sy-vline,
  WA_/PF1/STR_TAXINFORMATION3-NM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/PF1/STR_TAXINFORMATION3 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_/PF1/STR_TAXINFORMATION3 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_/PF1/STR_TAXINFORMATION3 INTO WA_/PF1/STR_TAXINFORMATION3.


*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_/PF1/STR_TAXINFORMATION3_STR, 
CDTR TYPE STRING,
TAXID TYPE STRING,
REGNID TYPE STRING,
TAXTP TYPE STRING,
DBTR TYPE STRING,
TAXID TYPE STRING,
REGNID TYPE STRING,
TAXTP TYPE STRING,
AUTHSTN TYPE STRING,
TITL TYPE STRING,
NM TYPE STRING,
ADMSTNZN TYPE STRING,
REFNB TYPE STRING,
MTD TYPE STRING,
TTLTAXBLBASEAMT TYPE STRING,
INSTDAMT TYPE STRING,
CCY TYPE STRING,
TTLTAXAMT TYPE STRING,
INSTDAMT TYPE STRING,
CCY TYPE STRING,
DT TYPE STRING,
SEQNB TYPE STRING,
RCRD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/PF1/STR_TAXINFORMATION3_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_/PF1/STR_TAXINFORMATION3_STR-CDTR sy-vline 
WA_/PF1/STR_TAXINFORMATION3_STR-TAXID sy-vline 
WA_/PF1/STR_TAXINFORMATION3_STR-REGNID sy-vline 
WA_/PF1/STR_TAXINFORMATION3_STR-TAXTP sy-vline 
WA_/PF1/STR_TAXINFORMATION3_STR-DBTR sy-vline 
WA_/PF1/STR_TAXINFORMATION3_STR-TAXID sy-vline 
WA_/PF1/STR_TAXINFORMATION3_STR-REGNID sy-vline 
WA_/PF1/STR_TAXINFORMATION3_STR-TAXTP sy-vline 
WA_/PF1/STR_TAXINFORMATION3_STR-AUTHSTN sy-vline 
WA_/PF1/STR_TAXINFORMATION3_STR-TITL sy-vline 
WA_/PF1/STR_TAXINFORMATION3_STR-NM sy-vline 
WA_/PF1/STR_TAXINFORMATION3_STR-ADMSTNZN sy-vline 
WA_/PF1/STR_TAXINFORMATION3_STR-REFNB sy-vline 
WA_/PF1/STR_TAXINFORMATION3_STR-MTD sy-vline 
WA_/PF1/STR_TAXINFORMATION3_STR-TTLTAXBLBASEAMT sy-vline 
WA_/PF1/STR_TAXINFORMATION3_STR-INSTDAMT sy-vline 
WA_/PF1/STR_TAXINFORMATION3_STR-CCY sy-vline 
WA_/PF1/STR_TAXINFORMATION3_STR-TTLTAXAMT sy-vline 
WA_/PF1/STR_TAXINFORMATION3_STR-INSTDAMT sy-vline 
WA_/PF1/STR_TAXINFORMATION3_STR-CCY sy-vline 
WA_/PF1/STR_TAXINFORMATION3_STR-DT sy-vline 
WA_/PF1/STR_TAXINFORMATION3_STR-SEQNB sy-vline 
WA_/PF1/STR_TAXINFORMATION3_STR-RCRD sy-vline      INTO ld_text SEPARATED BY SPACE.

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