ABAP Select data from SAP table HRPAYFR_S_RETAX into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HRPAYFR_S_RETAX
*  INTO TABLE @DATA(IT_HRPAYFR_S_RETAX2).
*--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_HRPAYFR_S_RETAX INDEX 1 INTO DATA(WA_HRPAYFR_S_RETAX2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HRPAYFR_S_RETAX>-NUMTX = 1.
<HRPAYFR_S_RETAX>-NRCUM = 1.
<HRPAYFR_S_RETAX>-DSNZO = 1.
<HRPAYFR_S_RETAX>-CATEG = 1.
<HRPAYFR_S_RETAX>-APZNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HRPAYFR_S_RETAX-CNTR1, sy-vline,
  WA_HRPAYFR_S_RETAX-CNTR2, sy-vline,
  WA_HRPAYFR_S_RETAX-SPLT1, sy-vline,
  WA_HRPAYFR_S_RETAX-PASID, sy-vline,
  WA_HRPAYFR_S_RETAX-BEGDA, sy-vline,
  WA_HRPAYFR_S_RETAX-ENDDA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HRPAYFR_S_RETAX 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_HRPAYFR_S_RETAX 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_HRPAYFR_S_RETAX INTO WA_HRPAYFR_S_RETAX.


*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_HRPAYFR_S_RETAX_STR, 
NUMTX TYPE STRING,
NRCUM TYPE STRING,
DSNZO TYPE STRING,
CATEG TYPE STRING,
APZNR TYPE STRING,
CNTR1 TYPE STRING,
CNTR2 TYPE STRING,
SPLT1 TYPE STRING,
PASID TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
UIDCT TYPE STRING,
CONUM TYPE STRING,
TYEAR TYPE STRING,
TPERI TYPE STRING,
DYEAR TYPE STRING,
STATS TYPE STRING,
SUBST TYPE STRING,
TAXWG TYPE STRING,
MODCD TYPE STRING,
TAXTY TYPE STRING,
TAXWT TYPE STRING,
VALUE TYPE STRING,
DELTA TYPE STRING,
WAERS TYPE STRING,
OPERA TYPE STRING,
PERCT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HRPAYFR_S_RETAX_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_HRPAYFR_S_RETAX_STR-NUMTX sy-vline 
WA_HRPAYFR_S_RETAX_STR-NRCUM sy-vline 
WA_HRPAYFR_S_RETAX_STR-DSNZO sy-vline 
WA_HRPAYFR_S_RETAX_STR-CATEG sy-vline 
WA_HRPAYFR_S_RETAX_STR-APZNR sy-vline 
WA_HRPAYFR_S_RETAX_STR-CNTR1 sy-vline 
WA_HRPAYFR_S_RETAX_STR-CNTR2 sy-vline 
WA_HRPAYFR_S_RETAX_STR-SPLT1 sy-vline 
WA_HRPAYFR_S_RETAX_STR-PASID sy-vline 
WA_HRPAYFR_S_RETAX_STR-BEGDA sy-vline 
WA_HRPAYFR_S_RETAX_STR-ENDDA sy-vline 
WA_HRPAYFR_S_RETAX_STR-UIDCT sy-vline 
WA_HRPAYFR_S_RETAX_STR-CONUM sy-vline 
WA_HRPAYFR_S_RETAX_STR-TYEAR sy-vline 
WA_HRPAYFR_S_RETAX_STR-TPERI sy-vline 
WA_HRPAYFR_S_RETAX_STR-DYEAR sy-vline 
WA_HRPAYFR_S_RETAX_STR-STATS sy-vline 
WA_HRPAYFR_S_RETAX_STR-SUBST sy-vline 
WA_HRPAYFR_S_RETAX_STR-TAXWG sy-vline 
WA_HRPAYFR_S_RETAX_STR-MODCD sy-vline 
WA_HRPAYFR_S_RETAX_STR-TAXTY sy-vline 
WA_HRPAYFR_S_RETAX_STR-TAXWT sy-vline 
WA_HRPAYFR_S_RETAX_STR-VALUE sy-vline 
WA_HRPAYFR_S_RETAX_STR-DELTA sy-vline 
WA_HRPAYFR_S_RETAX_STR-WAERS sy-vline 
WA_HRPAYFR_S_RETAX_STR-OPERA sy-vline 
WA_HRPAYFR_S_RETAX_STR-PERCT sy-vline      INTO ld_text SEPARATED BY SPACE.

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