ABAP Select data from SAP table PBSI_TAX_API into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PBSI_TAX_API
*  INTO TABLE @DATA(IT_PBSI_TAX_API2).
*--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_PBSI_TAX_API INDEX 1 INTO DATA(WA_PBSI_TAX_API2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PBSI_TAX_API>-COTERMINUSVALID = 1.
<PBSI_TAX_API>-REGULARVALID = 1.
<PBSI_TAX_API>-SUPPLEMENTALVALID = 1.
<PBSI_TAX_API>-VACATIONVALID = 1.
<PBSI_TAX_API>-CUMULATIVEVALID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PBSI_TAX_API-DAILYFACTOR, sy-vline,
  WA_PBSI_TAX_API-ADDITIONALTAX, sy-vline,
  WA_PBSI_TAX_API-TAXDISPOSITION, sy-vline,
  WA_PBSI_TAX_API-NONPERIODIC, sy-vline,
  WA_PBSI_TAX_API-MANDATORY, sy-vline,
  WA_PBSI_TAX_API-PSRPROCESS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PBSI_TAX_API 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_PBSI_TAX_API 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_PBSI_TAX_API INTO WA_PBSI_TAX_API.


*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_PBSI_TAX_API_STR, 
COTERMINUSVALID TYPE STRING,
REGULARVALID TYPE STRING,
SUPPLEMENTALVALID TYPE STRING,
VACATIONVALID TYPE STRING,
CUMULATIVEVALID TYPE STRING,
DAILYFACTOR TYPE STRING,
ADDITIONALTAX TYPE STRING,
TAXDISPOSITION TYPE STRING,
NONPERIODIC TYPE STRING,
MANDATORY TYPE STRING,
PSRPROCESS TYPE STRING,
EICCERT TYPE STRING,
AUTHORITYCODE TYPE STRING,
TAXTYPE TYPE STRING,
EFFECTIVEDATE TYPE STRING,
RESCINDDATE TYPE STRING,
FILLER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PBSI_TAX_API_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_PBSI_TAX_API_STR-COTERMINUSVALID sy-vline 
WA_PBSI_TAX_API_STR-REGULARVALID sy-vline 
WA_PBSI_TAX_API_STR-SUPPLEMENTALVALID sy-vline 
WA_PBSI_TAX_API_STR-VACATIONVALID sy-vline 
WA_PBSI_TAX_API_STR-CUMULATIVEVALID sy-vline 
WA_PBSI_TAX_API_STR-DAILYFACTOR sy-vline 
WA_PBSI_TAX_API_STR-ADDITIONALTAX sy-vline 
WA_PBSI_TAX_API_STR-TAXDISPOSITION sy-vline 
WA_PBSI_TAX_API_STR-NONPERIODIC sy-vline 
WA_PBSI_TAX_API_STR-MANDATORY sy-vline 
WA_PBSI_TAX_API_STR-PSRPROCESS sy-vline 
WA_PBSI_TAX_API_STR-EICCERT sy-vline 
WA_PBSI_TAX_API_STR-AUTHORITYCODE sy-vline 
WA_PBSI_TAX_API_STR-TAXTYPE sy-vline 
WA_PBSI_TAX_API_STR-EFFECTIVEDATE sy-vline 
WA_PBSI_TAX_API_STR-RESCINDDATE sy-vline 
WA_PBSI_TAX_API_STR-FILLER sy-vline      INTO ld_text SEPARATED BY SPACE.

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