ABAP Select data from SAP table PAYUA_NATIONAL into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PAYUA_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 PAYUA_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 PAYUA_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_PAYUA_NATIONAL TYPE STANDARD TABLE OF PAYUA_NATIONAL,
      WA_PAYUA_NATIONAL TYPE PAYUA_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: <PAYUA_NATIONAL> TYPE PAYUA_NATIONAL.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PAYUA_NATIONAL
*  INTO TABLE @DATA(IT_PAYUA_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_PAYUA_NATIONAL INDEX 1 INTO DATA(WA_PAYUA_NATIONAL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PAYUA_NATIONAL>-UAAV = 1.
<PAYUA_NATIONAL>-UARF = 1.
<PAYUA_NATIONAL>-UATS = 1.
<PAYUA_NATIONAL>-UATR = 1.
<PAYUA_NATIONAL>-UATI = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PAYUA_NATIONAL-FUP, sy-vline,
  WA_PAYUA_NATIONAL-UAIND, sy-vline,
  WA_PAYUA_NATIONAL-UAILL, sy-vline,
  WA_PAYUA_NATIONAL-UAGRP, sy-vline,
  WA_PAYUA_NATIONAL-TAX, sy-vline,
  WA_PAYUA_NATIONAL-UART, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PAYUA_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_PAYUA_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_PAYUA_NATIONAL INTO WA_PAYUA_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.
ENDFORM. 

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

TYPES: BEGIN OF T_PAYUA_NATIONAL_STR, 
UAAV TYPE STRING,
UARF TYPE STRING,
UATS TYPE STRING,
UATR TYPE STRING,
UATI TYPE STRING,
FUP TYPE STRING,
UAIND TYPE STRING,
UAILL TYPE STRING,
UAGRP TYPE STRING,
TAX TYPE STRING,
UART TYPE STRING,
UARES TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PAYUA_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_PAYUA_NATIONAL_STR-UAAV sy-vline 
WA_PAYUA_NATIONAL_STR-UARF sy-vline 
WA_PAYUA_NATIONAL_STR-UATS sy-vline 
WA_PAYUA_NATIONAL_STR-UATR sy-vline 
WA_PAYUA_NATIONAL_STR-UATI sy-vline 
WA_PAYUA_NATIONAL_STR-FUP sy-vline 
WA_PAYUA_NATIONAL_STR-UAIND sy-vline 
WA_PAYUA_NATIONAL_STR-UAILL sy-vline 
WA_PAYUA_NATIONAL_STR-UAGRP sy-vline 
WA_PAYUA_NATIONAL_STR-TAX sy-vline 
WA_PAYUA_NATIONAL_STR-UART sy-vline 
WA_PAYUA_NATIONAL_STR-UARES sy-vline      INTO ld_text SEPARATED BY SPACE.

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