ABAP Select data from SAP table FPB_S_FIELDLIST into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FPB_S_FIELDLIST
*  INTO TABLE @DATA(IT_FPB_S_FIELDLIST2).
*--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_FPB_S_FIELDLIST INDEX 1 INTO DATA(WA_FPB_S_FIELDLIST2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FPB_S_FIELDLIST>-APPLID = 1.
<FPB_S_FIELDLIST>-FIELDCHAR = 1.
<FPB_S_FIELDLIST>-HIER_FLAG = 1.
<FPB_S_FIELDLIST>-INT_FLAG = 1.
<FPB_S_FIELDLIST>-SGL_FLAG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FPB_S_FIELDLIST-LENGTH_H, sy-vline,
  WA_FPB_S_FIELDLIST-TABNAME_H, sy-vline,
  WA_FPB_S_FIELDLIST-FIELDNAME_H, sy-vline,
  WA_FPB_S_FIELDLIST-REPRESENTATION_V, sy-vline,
  WA_FPB_S_FIELDLIST-REPRESENTATION_H, sy-vline,
  WA_FPB_S_FIELDLIST-INPUT_FLAG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FPB_S_FIELDLIST 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_FPB_S_FIELDLIST 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_FPB_S_FIELDLIST INTO WA_FPB_S_FIELDLIST.


*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 ISOLA, internal->external for field LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_FPB_S_FIELDLIST-LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FPB_S_FIELDLIST-LANGU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit DTYPE, internal->external for field DATATYPE
CALL FUNCTION 'CONVERSION_EXIT_DTYPE_OUTPUT'
  EXPORTING
    input =                      WA_FPB_S_FIELDLIST-DATATYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FPB_S_FIELDLIST-DATATYPE.
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_FPB_S_FIELDLIST_STR, 
APPLID TYPE STRING,
FIELDCHAR TYPE STRING,
HIER_FLAG TYPE STRING,
INT_FLAG TYPE STRING,
SGL_FLAG TYPE STRING,
LENGTH_H TYPE STRING,
TABNAME_H TYPE STRING,
FIELDNAME_H TYPE STRING,
REPRESENTATION_V TYPE STRING,
REPRESENTATION_H TYPE STRING,
INPUT_FLAG TYPE STRING,
TABNAME TYPE STRING,
FIELDNAME TYPE STRING,
LANGU TYPE STRING,
POSITION TYPE STRING,
OFFSET TYPE STRING,
DOMNAME TYPE STRING,
ROLLNAME TYPE STRING,
CHECKTABLE TYPE STRING,
LENG TYPE STRING,
INTLEN TYPE STRING,
OUTPUTLEN TYPE STRING,
DECIMALS TYPE STRING,
DATATYPE TYPE STRING,
INTTYPE TYPE STRING,
REFTABLE TYPE STRING,
REFFIELD TYPE STRING,
PRECFIELD TYPE STRING,
AUTHORID TYPE STRING,
MEMORYID TYPE STRING,
LOGFLAG TYPE STRING,
MASK TYPE STRING,
MASKLEN TYPE STRING,
CONVEXIT TYPE STRING,
HEADLEN TYPE STRING,
SCRLEN1 TYPE STRING,
SCRLEN2 TYPE STRING,
SCRLEN3 TYPE STRING,
FIELDTEXT TYPE STRING,
REPTEXT TYPE STRING,
SCRTEXT_S TYPE STRING,
SCRTEXT_M TYPE STRING,
SCRTEXT_L TYPE STRING,
KEYFLAG TYPE STRING,
LOWERCASE TYPE STRING,
MAC TYPE STRING,
GENKEY TYPE STRING,
NOFORKEY TYPE STRING,
VALEXI TYPE STRING,
NOAUTHCH TYPE STRING,
SIGN TYPE STRING,
DYNPFLD TYPE STRING,
F4AVAILABL TYPE STRING,
COMPTYPE TYPE STRING,
LFIELDNAME TYPE STRING,
LTRFLDDIS TYPE STRING,
BIDICTRLC TYPE STRING,
OUTPUTSTYLE TYPE STRING,
NOHISTORY TYPE STRING,
AMPMFORMAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FPB_S_FIELDLIST_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_FPB_S_FIELDLIST_STR-APPLID sy-vline 
WA_FPB_S_FIELDLIST_STR-FIELDCHAR sy-vline 
WA_FPB_S_FIELDLIST_STR-HIER_FLAG sy-vline 
WA_FPB_S_FIELDLIST_STR-INT_FLAG sy-vline 
WA_FPB_S_FIELDLIST_STR-SGL_FLAG sy-vline 
WA_FPB_S_FIELDLIST_STR-LENGTH_H sy-vline 
WA_FPB_S_FIELDLIST_STR-TABNAME_H sy-vline 
WA_FPB_S_FIELDLIST_STR-FIELDNAME_H sy-vline 
WA_FPB_S_FIELDLIST_STR-REPRESENTATION_V sy-vline 
WA_FPB_S_FIELDLIST_STR-REPRESENTATION_H sy-vline 
WA_FPB_S_FIELDLIST_STR-INPUT_FLAG sy-vline 
WA_FPB_S_FIELDLIST_STR-TABNAME sy-vline 
WA_FPB_S_FIELDLIST_STR-FIELDNAME sy-vline 
WA_FPB_S_FIELDLIST_STR-LANGU sy-vline 
WA_FPB_S_FIELDLIST_STR-POSITION sy-vline 
WA_FPB_S_FIELDLIST_STR-OFFSET sy-vline 
WA_FPB_S_FIELDLIST_STR-DOMNAME sy-vline 
WA_FPB_S_FIELDLIST_STR-ROLLNAME sy-vline 
WA_FPB_S_FIELDLIST_STR-CHECKTABLE sy-vline 
WA_FPB_S_FIELDLIST_STR-LENG sy-vline 
WA_FPB_S_FIELDLIST_STR-INTLEN sy-vline 
WA_FPB_S_FIELDLIST_STR-OUTPUTLEN sy-vline 
WA_FPB_S_FIELDLIST_STR-DECIMALS sy-vline 
WA_FPB_S_FIELDLIST_STR-DATATYPE sy-vline 
WA_FPB_S_FIELDLIST_STR-INTTYPE sy-vline 
WA_FPB_S_FIELDLIST_STR-REFTABLE sy-vline 
WA_FPB_S_FIELDLIST_STR-REFFIELD sy-vline 
WA_FPB_S_FIELDLIST_STR-PRECFIELD sy-vline 
WA_FPB_S_FIELDLIST_STR-AUTHORID sy-vline 
WA_FPB_S_FIELDLIST_STR-MEMORYID sy-vline 
WA_FPB_S_FIELDLIST_STR-LOGFLAG sy-vline 
WA_FPB_S_FIELDLIST_STR-MASK sy-vline 
WA_FPB_S_FIELDLIST_STR-MASKLEN sy-vline 
WA_FPB_S_FIELDLIST_STR-CONVEXIT sy-vline 
WA_FPB_S_FIELDLIST_STR-HEADLEN sy-vline 
WA_FPB_S_FIELDLIST_STR-SCRLEN1 sy-vline 
WA_FPB_S_FIELDLIST_STR-SCRLEN2 sy-vline 
WA_FPB_S_FIELDLIST_STR-SCRLEN3 sy-vline 
WA_FPB_S_FIELDLIST_STR-FIELDTEXT sy-vline 
WA_FPB_S_FIELDLIST_STR-REPTEXT sy-vline 
WA_FPB_S_FIELDLIST_STR-SCRTEXT_S sy-vline 
WA_FPB_S_FIELDLIST_STR-SCRTEXT_M sy-vline 
WA_FPB_S_FIELDLIST_STR-SCRTEXT_L sy-vline 
WA_FPB_S_FIELDLIST_STR-KEYFLAG sy-vline 
WA_FPB_S_FIELDLIST_STR-LOWERCASE sy-vline 
WA_FPB_S_FIELDLIST_STR-MAC sy-vline 
WA_FPB_S_FIELDLIST_STR-GENKEY sy-vline 
WA_FPB_S_FIELDLIST_STR-NOFORKEY sy-vline 
WA_FPB_S_FIELDLIST_STR-VALEXI sy-vline 
WA_FPB_S_FIELDLIST_STR-NOAUTHCH sy-vline 
WA_FPB_S_FIELDLIST_STR-SIGN sy-vline 
WA_FPB_S_FIELDLIST_STR-DYNPFLD sy-vline 
WA_FPB_S_FIELDLIST_STR-F4AVAILABL sy-vline 
WA_FPB_S_FIELDLIST_STR-COMPTYPE sy-vline 
WA_FPB_S_FIELDLIST_STR-LFIELDNAME sy-vline 
WA_FPB_S_FIELDLIST_STR-LTRFLDDIS sy-vline 
WA_FPB_S_FIELDLIST_STR-BIDICTRLC sy-vline 
WA_FPB_S_FIELDLIST_STR-OUTPUTSTYLE sy-vline 
WA_FPB_S_FIELDLIST_STR-NOHISTORY sy-vline 
WA_FPB_S_FIELDLIST_STR-AMPMFORMAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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