ABAP Select data from SAP table REXC_IT_ICI_PDF_TAXPAYER into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REXC_IT_ICI_PDF_TAXPAYER
*  INTO TABLE @DATA(IT_REXC_IT_ICI_PDF_TAXPAYER2).
*--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_REXC_IT_ICI_PDF_TAXPAYER INDEX 1 INTO DATA(WA_REXC_IT_ICI_PDF_TAXPAYER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REXC_IT_ICI_PDF_TAXPAYER>-TFISCALCODE = 1.
<REXC_IT_ICI_PDF_TAXPAYER>-TTELPREFIX = 1.
<REXC_IT_ICI_PDF_TAXPAYER>-TTELNO = 1.
<REXC_IT_ICI_PDF_TAXPAYER>-TEMAIL = 1.
<REXC_IT_ICI_PDF_TAXPAYER>-TLASTNAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REXC_IT_ICI_PDF_TAXPAYER-TNAME, sy-vline,
  WA_REXC_IT_ICI_PDF_TAXPAYER-TFISCALADDR, sy-vline,
  WA_REXC_IT_ICI_PDF_TAXPAYER-TPOSTALCODE, sy-vline,
  WA_REXC_IT_ICI_PDF_TAXPAYER-TCITY, sy-vline,
  WA_REXC_IT_ICI_PDF_TAXPAYER-TREGION, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_REXC_IT_ICI_PDF_TAXPAYER 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_REXC_IT_ICI_PDF_TAXPAYER 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_REXC_IT_ICI_PDF_TAXPAYER INTO WA_REXC_IT_ICI_PDF_TAXPAYER.


*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_REXC_IT_ICI_PDF_TAXPAYER_STR, 
TFISCALCODE TYPE STRING,
TTELPREFIX TYPE STRING,
TTELNO TYPE STRING,
TEMAIL TYPE STRING,
TLASTNAME TYPE STRING,
TNAME TYPE STRING,
TFISCALADDR TYPE STRING,
TPOSTALCODE TYPE STRING,
TCITY TYPE STRING,
TREGION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REXC_IT_ICI_PDF_TAXPAYER_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_REXC_IT_ICI_PDF_TAXPAYER_STR-TFISCALCODE sy-vline 
WA_REXC_IT_ICI_PDF_TAXPAYER_STR-TTELPREFIX sy-vline 
WA_REXC_IT_ICI_PDF_TAXPAYER_STR-TTELNO sy-vline 
WA_REXC_IT_ICI_PDF_TAXPAYER_STR-TEMAIL sy-vline 
WA_REXC_IT_ICI_PDF_TAXPAYER_STR-TLASTNAME sy-vline 
WA_REXC_IT_ICI_PDF_TAXPAYER_STR-TNAME sy-vline 
WA_REXC_IT_ICI_PDF_TAXPAYER_STR-TFISCALADDR sy-vline 
WA_REXC_IT_ICI_PDF_TAXPAYER_STR-TPOSTALCODE sy-vline 
WA_REXC_IT_ICI_PDF_TAXPAYER_STR-TCITY sy-vline 
WA_REXC_IT_ICI_PDF_TAXPAYER_STR-TREGION sy-vline      INTO ld_text SEPARATED BY SPACE.

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