ABAP Select data from SAP table PAYFR_NATIONAL into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PAYFR_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 PAYFR_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 PAYFR_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_PAYFR_NATIONAL TYPE STANDARD TABLE OF PAYFR_NATIONAL,
      WA_PAYFR_NATIONAL TYPE PAYFR_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: <PAYFR_NATIONAL> TYPE PAYFR_NATIONAL.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PAYFR_NATIONAL
*  INTO TABLE @DATA(IT_PAYFR_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_PAYFR_NATIONAL INDEX 1 INTO DATA(WA_PAYFR_NATIONAL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PAYFR_NATIONAL>-SV = 1.
<PAYFR_NATIONAL>-SAR = 1.
<PAYFR_NATIONAL>-PSPP = 1.
<PAYFR_NATIONAL>-ZLP = 1.
<PAYFR_NATIONAL>-RECOT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PAYFR_NATIONAL-CCRT, sy-vline,
  WA_PAYFR_NATIONAL-FPWP, sy-vline,
  WA_PAYFR_NATIONAL-WPE, sy-vline,
  WA_PAYFR_NATIONAL-FMD, sy-vline,
  WA_PAYFR_NATIONAL-FPERS, sy-vline,
  WA_PAYFR_NATIONAL-CTT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PAYFR_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_PAYFR_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_PAYFR_NATIONAL INTO WA_PAYFR_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_PAYFR_NATIONAL_STR, 
SV TYPE STRING,
SAR TYPE STRING,
PSPP TYPE STRING,
ZLP TYPE STRING,
RECOT TYPE STRING,
CCRT TYPE STRING,
FPWP TYPE STRING,
WPE TYPE STRING,
FMD TYPE STRING,
FPERS TYPE STRING,
CTT TYPE STRING,
PAYM TYPE STRING,
REM TYPE STRING,
ACTI TYPE STRING,
SUSPENSION TYPE STRING,
AB_FR TYPE STRING,
CTT_END TYPE STRING,
THERA TYPE STRING,
FD TYPE STRING,
CPP TYPE STRING,
PAS TYPE STRING,
RETAX TYPE STRING,
CPEN TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PAYFR_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_PAYFR_NATIONAL_STR-SV sy-vline 
WA_PAYFR_NATIONAL_STR-SAR sy-vline 
WA_PAYFR_NATIONAL_STR-PSPP sy-vline 
WA_PAYFR_NATIONAL_STR-ZLP sy-vline 
WA_PAYFR_NATIONAL_STR-RECOT sy-vline 
WA_PAYFR_NATIONAL_STR-CCRT sy-vline 
WA_PAYFR_NATIONAL_STR-FPWP sy-vline 
WA_PAYFR_NATIONAL_STR-WPE sy-vline 
WA_PAYFR_NATIONAL_STR-FMD sy-vline 
WA_PAYFR_NATIONAL_STR-FPERS sy-vline 
WA_PAYFR_NATIONAL_STR-CTT sy-vline 
WA_PAYFR_NATIONAL_STR-PAYM sy-vline 
WA_PAYFR_NATIONAL_STR-REM sy-vline 
WA_PAYFR_NATIONAL_STR-ACTI sy-vline 
WA_PAYFR_NATIONAL_STR-SUSPENSION sy-vline 
WA_PAYFR_NATIONAL_STR-AB_FR sy-vline 
WA_PAYFR_NATIONAL_STR-CTT_END sy-vline 
WA_PAYFR_NATIONAL_STR-THERA sy-vline 
WA_PAYFR_NATIONAL_STR-FD sy-vline 
WA_PAYFR_NATIONAL_STR-CPP sy-vline 
WA_PAYFR_NATIONAL_STR-PAS sy-vline 
WA_PAYFR_NATIONAL_STR-RETAX sy-vline 
WA_PAYFR_NATIONAL_STR-CPEN sy-vline      INTO ld_text SEPARATED BY SPACE.

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