ABAP Select data from SAP table /SAPPSPRO/S_FMR_INTERFACE_HEAD into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SAPPSPRO/S_FMR_INTERFACE_HEAD 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 /SAPPSPRO/S_FMR_INTERFACE_HEAD. 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 /SAPPSPRO/S_FMR_INTERFACE_HEAD 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_/SAPPSPRO/S_FMR_INTERFACE_HEAD TYPE STANDARD TABLE OF /SAPPSPRO/S_FMR_INTERFACE_HEAD,
      WA_/SAPPSPRO/S_FMR_INTERFACE_HEAD TYPE /SAPPSPRO/S_FMR_INTERFACE_HEAD,
      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: </SAPPSPRO/S_FMR_INTERFACE_HEAD> TYPE /SAPPSPRO/S_FMR_INTERFACE_HEAD.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SAPPSPRO/S_FMR_INTERFACE_HEAD
  INTO TABLE IT_/SAPPSPRO/S_FMR_INTERFACE_HEAD.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPPSPRO/S_FMR_INTERFACE_HEAD
*  INTO TABLE @DATA(IT_/SAPPSPRO/S_FMR_INTERFACE_HEAD2).
*--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_/SAPPSPRO/S_FMR_INTERFACE_HEAD INDEX 1 INTO DATA(WA_/SAPPSPRO/S_FMR_INTERFACE_HEAD2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SAPPSPRO/S_FMR_INTERFACE_HEAD ASSIGNING </SAPPSPRO/S_FMR_INTERFACE_HEAD>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPPSPRO/S_FMR_INTERFACE_HEAD>-BELNR = 1.
</SAPPSPRO/S_FMR_INTERFACE_HEAD>-BLTYP = 1.
</SAPPSPRO/S_FMR_INTERFACE_HEAD>-BLDAT = 1.
</SAPPSPRO/S_FMR_INTERFACE_HEAD>-BUDAT = 1.
</SAPPSPRO/S_FMR_INTERFACE_HEAD>-BLART = 1.

ENDLOOP.

LOOP AT IT_/SAPPSPRO/S_FMR_INTERFACE_HEAD INTO WA_/SAPPSPRO/S_FMR_INTERFACE_HEAD.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPPSPRO/S_FMR_INTERFACE_HEAD-WAERS, sy-vline,
  WA_/SAPPSPRO/S_FMR_INTERFACE_HEAD-BUKRS, sy-vline,
  WA_/SAPPSPRO/S_FMR_INTERFACE_HEAD-KURSF, sy-vline,
  WA_/SAPPSPRO/S_FMR_INTERFACE_HEAD-WWERT, sy-vline,
  WA_/SAPPSPRO/S_FMR_INTERFACE_HEAD-COMBUDGET, sy-vline,
  WA_/SAPPSPRO/S_FMR_INTERFACE_HEAD-PAYBUDGET, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPPSPRO/S_FMR_INTERFACE_HEAD 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_/SAPPSPRO/S_FMR_INTERFACE_HEAD 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_/SAPPSPRO/S_FMR_INTERFACE_HEAD INTO WA_/SAPPSPRO/S_FMR_INTERFACE_HEAD.


*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 BELNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SAPPSPRO/S_FMR_INTERFACE_HEAD-BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPPSPRO/S_FMR_INTERFACE_HEAD-BELNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EXCRT, internal->external for field KURSF
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_/SAPPSPRO/S_FMR_INTERFACE_HEAD-KURSF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPPSPRO/S_FMR_INTERFACE_HEAD-KURSF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LOTKZ
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SAPPSPRO/S_FMR_INTERFACE_HEAD-LOTKZ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPPSPRO/S_FMR_INTERFACE_HEAD-LOTKZ.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RFBLNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SAPPSPRO/S_FMR_INTERFACE_HEAD-RFBLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPPSPRO/S_FMR_INTERFACE_HEAD-RFBLNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RFSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SAPPSPRO/S_FMR_INTERFACE_HEAD-RFSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPPSPRO/S_FMR_INTERFACE_HEAD-RFSYS.
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_/SAPPSPRO/S_FMR_INTERFACE_HEAD_STR, 
BELNR TYPE STRING,
BLTYP TYPE STRING,
BLDAT TYPE STRING,
BUDAT TYPE STRING,
BLART TYPE STRING,
WAERS TYPE STRING,
BUKRS TYPE STRING,
KURSF TYPE STRING,
WWERT TYPE STRING,
COMBUDGET TYPE STRING,
PAYBUDGET TYPE STRING,
LOTKZ TYPE STRING,
KTEXT TYPE STRING,
RFBLNR TYPE STRING,
RFORG TYPE STRING,
RFTYP TYPE STRING,
RFSYS TYPE STRING,
DOCLOCK TYPE STRING,
PARK_DOC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPPSPRO/S_FMR_INTERFACE_HEAD_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_/SAPPSPRO/S_FMR_INTERFACE_HEAD_STR-BELNR sy-vline 
WA_/SAPPSPRO/S_FMR_INTERFACE_HEAD_STR-BLTYP sy-vline 
WA_/SAPPSPRO/S_FMR_INTERFACE_HEAD_STR-BLDAT sy-vline 
WA_/SAPPSPRO/S_FMR_INTERFACE_HEAD_STR-BUDAT sy-vline 
WA_/SAPPSPRO/S_FMR_INTERFACE_HEAD_STR-BLART sy-vline 
WA_/SAPPSPRO/S_FMR_INTERFACE_HEAD_STR-WAERS sy-vline 
WA_/SAPPSPRO/S_FMR_INTERFACE_HEAD_STR-BUKRS sy-vline 
WA_/SAPPSPRO/S_FMR_INTERFACE_HEAD_STR-KURSF sy-vline 
WA_/SAPPSPRO/S_FMR_INTERFACE_HEAD_STR-WWERT sy-vline 
WA_/SAPPSPRO/S_FMR_INTERFACE_HEAD_STR-COMBUDGET sy-vline 
WA_/SAPPSPRO/S_FMR_INTERFACE_HEAD_STR-PAYBUDGET sy-vline 
WA_/SAPPSPRO/S_FMR_INTERFACE_HEAD_STR-LOTKZ sy-vline 
WA_/SAPPSPRO/S_FMR_INTERFACE_HEAD_STR-KTEXT sy-vline 
WA_/SAPPSPRO/S_FMR_INTERFACE_HEAD_STR-RFBLNR sy-vline 
WA_/SAPPSPRO/S_FMR_INTERFACE_HEAD_STR-RFORG sy-vline 
WA_/SAPPSPRO/S_FMR_INTERFACE_HEAD_STR-RFTYP sy-vline 
WA_/SAPPSPRO/S_FMR_INTERFACE_HEAD_STR-RFSYS sy-vline 
WA_/SAPPSPRO/S_FMR_INTERFACE_HEAD_STR-DOCLOCK sy-vline 
WA_/SAPPSPRO/S_FMR_INTERFACE_HEAD_STR-PARK_DOC sy-vline      INTO ld_text SEPARATED BY SPACE.

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