ABAP Select data from SAP table PAYIE_NATIONAL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PAYIE_NATIONAL
*  INTO TABLE @DATA(IT_PAYIE_NATIONAL2).
*--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_PAYIE_NATIONAL INDEX 1 INTO DATA(WA_PAYIE_NATIONAL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PAYIE_NATIONAL>-PRSI = 1.
<PAYIE_NATIONAL>-BEGDA = 1.
<PAYIE_NATIONAL>-ENDDA = 1.
<PAYIE_NATIONAL>-DRTXP = 1.
<PAYIE_NATIONAL>-DIRYR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PAYIE_NATIONAL-PRSIC, sy-vline,
  WA_PAYIE_NATIONAL-PRSIA, sy-vline,
  WA_PAYIE_NATIONAL-EECON, sy-vline,
  WA_PAYIE_NATIONAL-ERCON, sy-vline,
  WA_PAYIE_NATIONAL-FASLV, sy-vline,
  WA_PAYIE_NATIONAL-WEEKS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PAYIE_NATIONAL 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_PAYIE_NATIONAL 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_PAYIE_NATIONAL INTO WA_PAYIE_NATIONAL.


*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.

*Conversion exit GJAHR, internal->external for field DIRYR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_PAYIE_NATIONAL-DIRYR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PAYIE_NATIONAL-DIRYR.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

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

TYPES: BEGIN OF T_PAYIE_NATIONAL_STR, 
PRSI TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
DRTXP TYPE STRING,
DIRYR TYPE STRING,
PRSIC TYPE STRING,
PRSIA TYPE STRING,
EECON TYPE STRING,
ERCON TYPE STRING,
FASLV TYPE STRING,
WEEKS TYPE STRING,
PEXMP TYPE STRING,
WEEKO TYPE STRING,
DIRSI TYPE STRING,
WAERS TYPE STRING,
PSPWC TYPE STRING,
PSPDS TYPE STRING,
PRSPC TYPE STRING,
PRSPA TYPE STRING,
WEEKP TYPE STRING,
PRSIE TYPE STRING,
PRSIR TYPE STRING,
IETAX TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
TXBAS TYPE STRING,
TXTBL TYPE STRING,
TXRFS TYPE STRING,
TXSTK TYPE STRING,
P45PY TYPE STRING,
P45TX TYPE STRING,
P45WK TYPE STRING,
P45MN TYPE STRING,
P45TF TYPE STRING,
TFAWK TYPE STRING,
WKSEM TYPE STRING,
MTHEM TYPE STRING,
WAERS TYPE STRING,
ERNIE TYPE STRING,
RPNNO TYPE STRING,
RPNID TYPE STRING,
EMPID TYPE STRING,
EXORD TYPE STRING,
SOURCE TYPE STRING,
TFAYR TYPE STRING,
TRAT1 TYPE STRING,
CUTOF TYPE STRING,
TRAT2 TYPE STRING,
LPTAX TYPE STRING,
PENS TYPE STRING,
EXCEP TYPE STRING,
AHPS TYPE STRING,
PYSQN TYPE STRING,
NRPRD TYPE STRING,
CSQNR TYPE STRING,
CPRSI TYPE STRING,
IEUSC TYPE STRING,
PRD TYPE STRING,
RELEVANT TYPE STRING,
MAIN TYPE STRING,
BASIS TYPE STRING,
EOYBAL TYPE STRING,
P60GR TYPE STRING,
P60DE TYPE STRING,
P45GR TYPE STRING,
P45DE TYPE STRING,
LEAVER TYPE STRING,
LEFTDT TYPE STRING,
LEFTPS TYPE STRING,
LEFTID TYPE STRING,
LEFTRD TYPE STRING,
THRESHOLD TYPE STRING,
CALCTY TYPE STRING,
RECALC TYPE STRING,
NONCV TYPE STRING,
PSTYP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PAYIE_NATIONAL_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_PAYIE_NATIONAL_STR-PRSI sy-vline 
WA_PAYIE_NATIONAL_STR-BEGDA sy-vline 
WA_PAYIE_NATIONAL_STR-ENDDA sy-vline 
WA_PAYIE_NATIONAL_STR-DRTXP sy-vline 
WA_PAYIE_NATIONAL_STR-DIRYR sy-vline 
WA_PAYIE_NATIONAL_STR-PRSIC sy-vline 
WA_PAYIE_NATIONAL_STR-PRSIA sy-vline 
WA_PAYIE_NATIONAL_STR-EECON sy-vline 
WA_PAYIE_NATIONAL_STR-ERCON sy-vline 
WA_PAYIE_NATIONAL_STR-FASLV sy-vline 
WA_PAYIE_NATIONAL_STR-WEEKS sy-vline 
WA_PAYIE_NATIONAL_STR-PEXMP sy-vline 
WA_PAYIE_NATIONAL_STR-WEEKO sy-vline 
WA_PAYIE_NATIONAL_STR-DIRSI sy-vline 
WA_PAYIE_NATIONAL_STR-WAERS sy-vline 
WA_PAYIE_NATIONAL_STR-PSPWC sy-vline 
WA_PAYIE_NATIONAL_STR-PSPDS sy-vline 
WA_PAYIE_NATIONAL_STR-PRSPC sy-vline 
WA_PAYIE_NATIONAL_STR-PRSPA sy-vline 
WA_PAYIE_NATIONAL_STR-WEEKP sy-vline 
WA_PAYIE_NATIONAL_STR-PRSIE sy-vline 
WA_PAYIE_NATIONAL_STR-PRSIR sy-vline 
WA_PAYIE_NATIONAL_STR-IETAX sy-vline 
WA_PAYIE_NATIONAL_STR-BEGDA sy-vline 
WA_PAYIE_NATIONAL_STR-ENDDA sy-vline 
WA_PAYIE_NATIONAL_STR-TXBAS sy-vline 
WA_PAYIE_NATIONAL_STR-TXTBL sy-vline 
WA_PAYIE_NATIONAL_STR-TXRFS sy-vline 
WA_PAYIE_NATIONAL_STR-TXSTK sy-vline 
WA_PAYIE_NATIONAL_STR-P45PY sy-vline 
WA_PAYIE_NATIONAL_STR-P45TX sy-vline 
WA_PAYIE_NATIONAL_STR-P45WK sy-vline 
WA_PAYIE_NATIONAL_STR-P45MN sy-vline 
WA_PAYIE_NATIONAL_STR-P45TF sy-vline 
WA_PAYIE_NATIONAL_STR-TFAWK sy-vline 
WA_PAYIE_NATIONAL_STR-WKSEM sy-vline 
WA_PAYIE_NATIONAL_STR-MTHEM sy-vline 
WA_PAYIE_NATIONAL_STR-WAERS sy-vline 
WA_PAYIE_NATIONAL_STR-ERNIE sy-vline 
WA_PAYIE_NATIONAL_STR-RPNNO sy-vline 
WA_PAYIE_NATIONAL_STR-RPNID sy-vline 
WA_PAYIE_NATIONAL_STR-EMPID sy-vline 
WA_PAYIE_NATIONAL_STR-EXORD sy-vline 
WA_PAYIE_NATIONAL_STR-SOURCE sy-vline 
WA_PAYIE_NATIONAL_STR-TFAYR sy-vline 
WA_PAYIE_NATIONAL_STR-TRAT1 sy-vline 
WA_PAYIE_NATIONAL_STR-CUTOF sy-vline 
WA_PAYIE_NATIONAL_STR-TRAT2 sy-vline 
WA_PAYIE_NATIONAL_STR-LPTAX sy-vline 
WA_PAYIE_NATIONAL_STR-PENS sy-vline 
WA_PAYIE_NATIONAL_STR-EXCEP sy-vline 
WA_PAYIE_NATIONAL_STR-AHPS sy-vline 
WA_PAYIE_NATIONAL_STR-PYSQN sy-vline 
WA_PAYIE_NATIONAL_STR-NRPRD sy-vline 
WA_PAYIE_NATIONAL_STR-CSQNR sy-vline 
WA_PAYIE_NATIONAL_STR-CPRSI sy-vline 
WA_PAYIE_NATIONAL_STR-IEUSC sy-vline 
WA_PAYIE_NATIONAL_STR-PRD sy-vline 
WA_PAYIE_NATIONAL_STR-RELEVANT sy-vline 
WA_PAYIE_NATIONAL_STR-MAIN sy-vline 
WA_PAYIE_NATIONAL_STR-BASIS sy-vline 
WA_PAYIE_NATIONAL_STR-EOYBAL sy-vline 
WA_PAYIE_NATIONAL_STR-P60GR sy-vline 
WA_PAYIE_NATIONAL_STR-P60DE sy-vline 
WA_PAYIE_NATIONAL_STR-P45GR sy-vline 
WA_PAYIE_NATIONAL_STR-P45DE sy-vline 
WA_PAYIE_NATIONAL_STR-LEAVER sy-vline 
WA_PAYIE_NATIONAL_STR-LEFTDT sy-vline 
WA_PAYIE_NATIONAL_STR-LEFTPS sy-vline 
WA_PAYIE_NATIONAL_STR-LEFTID sy-vline 
WA_PAYIE_NATIONAL_STR-LEFTRD sy-vline 
WA_PAYIE_NATIONAL_STR-THRESHOLD sy-vline 
WA_PAYIE_NATIONAL_STR-CALCTY sy-vline 
WA_PAYIE_NATIONAL_STR-RECALC sy-vline 
WA_PAYIE_NATIONAL_STR-NONCV sy-vline 
WA_PAYIE_NATIONAL_STR-PSTYP sy-vline      INTO ld_text SEPARATED BY SPACE.

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