ABAP Select data from SAP table REXA_PAYMENT_FC_S into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM REXA_PAYMENT_FC_S
*  INTO TABLE @DATA(IT_REXA_PAYMENT_FC_S2).
*--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_REXA_PAYMENT_FC_S INDEX 1 INTO DATA(WA_REXA_PAYMENT_FC_S2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<REXA_PAYMENT_FC_S>-MANDT = 1.
<REXA_PAYMENT_FC_S>-INTRENO = 1.
<REXA_PAYMENT_FC_S>-TERMTYPE = 1.
<REXA_PAYMENT_FC_S>-TERMNO = 1.
<REXA_PAYMENT_FC_S>-VALIDFROM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_REXA_PAYMENT_FC_S-VALIDTO, sy-vline,
  WA_REXA_PAYMENT_FC_S-NOTETOPAYEE, sy-vline,
  WA_REXA_PAYMENT_FC_S-ACCDETKEY, sy-vline,
  WA_REXA_PAYMENT_FC_S-TAXTYPE, sy-vline,
  WA_REXA_PAYMENT_FC_S-TAXGROUP, sy-vline,
  WA_REXA_PAYMENT_FC_S-ISGROSS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_REXA_PAYMENT_FC_S 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_REXA_PAYMENT_FC_S 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_REXA_PAYMENT_FC_S INTO WA_REXA_PAYMENT_FC_S.


*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 ALPHA, internal->external for field TERMNO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_REXA_PAYMENT_FC_S-TERMNO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REXA_PAYMENT_FC_S-TERMNO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit REDAT, internal->external for field VALIDTO
CALL FUNCTION 'CONVERSION_EXIT_REDAT_OUTPUT'
  EXPORTING
    input =                      WA_REXA_PAYMENT_FC_S-VALIDTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REXA_PAYMENT_FC_S-VALIDTO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PARTNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_REXA_PAYMENT_FC_S-PARTNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_REXA_PAYMENT_FC_S-PARTNER.
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_REXA_PAYMENT_FC_S_STR, 
MANDT TYPE STRING,
INTRENO TYPE STRING,
TERMTYPE TYPE STRING,
TERMNO TYPE STRING,
VALIDFROM TYPE STRING,
VALIDTO TYPE STRING,
NOTETOPAYEE TYPE STRING,
ACCDETKEY TYPE STRING,
TAXTYPE TYPE STRING,
TAXGROUP TYPE STRING,
ISGROSS TYPE STRING,
PARTNER TYPE STRING,
XPARTNER TYPE STRING,
PARTNEROBJNR TYPE STRING,
XTERM TYPE STRING,
COUNTRY TYPE STRING,
INCBANKDETAILID TYPE STRING,
INCPYMTMETH TYPE STRING,
INCPYMTBLOCK TYPE STRING,
OUTGBANKDETAILID TYPE STRING,
OUTGPYMTMETH TYPE STRING,
OUTGPYMTBLOCK TYPE STRING,
DUNNBLOCK TYPE STRING,
LOCKREASONTEXT TYPE STRING,
CTRULE TYPE STRING,
SEPAMNDID TYPE STRING,
SEPARECCRDID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_REXA_PAYMENT_FC_S_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_REXA_PAYMENT_FC_S_STR-MANDT sy-vline 
WA_REXA_PAYMENT_FC_S_STR-INTRENO sy-vline 
WA_REXA_PAYMENT_FC_S_STR-TERMTYPE sy-vline 
WA_REXA_PAYMENT_FC_S_STR-TERMNO sy-vline 
WA_REXA_PAYMENT_FC_S_STR-VALIDFROM sy-vline 
WA_REXA_PAYMENT_FC_S_STR-VALIDTO sy-vline 
WA_REXA_PAYMENT_FC_S_STR-NOTETOPAYEE sy-vline 
WA_REXA_PAYMENT_FC_S_STR-ACCDETKEY sy-vline 
WA_REXA_PAYMENT_FC_S_STR-TAXTYPE sy-vline 
WA_REXA_PAYMENT_FC_S_STR-TAXGROUP sy-vline 
WA_REXA_PAYMENT_FC_S_STR-ISGROSS sy-vline 
WA_REXA_PAYMENT_FC_S_STR-PARTNER sy-vline 
WA_REXA_PAYMENT_FC_S_STR-XPARTNER sy-vline 
WA_REXA_PAYMENT_FC_S_STR-PARTNEROBJNR sy-vline 
WA_REXA_PAYMENT_FC_S_STR-XTERM sy-vline 
WA_REXA_PAYMENT_FC_S_STR-COUNTRY sy-vline 
WA_REXA_PAYMENT_FC_S_STR-INCBANKDETAILID sy-vline 
WA_REXA_PAYMENT_FC_S_STR-INCPYMTMETH sy-vline 
WA_REXA_PAYMENT_FC_S_STR-INCPYMTBLOCK sy-vline 
WA_REXA_PAYMENT_FC_S_STR-OUTGBANKDETAILID sy-vline 
WA_REXA_PAYMENT_FC_S_STR-OUTGPYMTMETH sy-vline 
WA_REXA_PAYMENT_FC_S_STR-OUTGPYMTBLOCK sy-vline 
WA_REXA_PAYMENT_FC_S_STR-DUNNBLOCK sy-vline 
WA_REXA_PAYMENT_FC_S_STR-LOCKREASONTEXT sy-vline 
WA_REXA_PAYMENT_FC_S_STR-CTRULE sy-vline 
WA_REXA_PAYMENT_FC_S_STR-SEPAMNDID sy-vline 
WA_REXA_PAYMENT_FC_S_STR-SEPARECCRDID sy-vline      INTO ld_text SEPARATED BY SPACE.

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