ABAP Select data from SAP table FTPRE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM FTPRE
*  INTO TABLE @DATA(IT_FTPRE2).
*--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_FTPRE INDEX 1 INTO DATA(WA_FTPRE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<FTPRE>-P_SIMUL = 1.
<FTPRE>-PRENE_T = 1.
<FTPRE>-GZOLX_T = 1.
<FTPRE>-P_BETOL = 1.
<FTPRE>-P_EULIF = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_FTPRE-P_ANSCH, sy-vline,
  WA_FTPRE-P_MAHNE, sy-vline,
  WA_FTPRE-P_MAXMA, sy-vline,
  WA_FTPRE-P_ANTXT, sy-vline,
  WA_FTPRE-P_MATXT, sy-vline,
  WA_FTPRE-P_SPRAS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_FTPRE 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_FTPRE 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_FTPRE INTO WA_FTPRE.


*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 P_SPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_FTPRE-P_SPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FTPRE-P_SPRAS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field P_MATNR_PRE
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_FTPRE-P_MATNR_PRE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_FTPRE-P_MATNR_PRE.
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_FTPRE_STR, 
P_SIMUL TYPE STRING,
PRENE_T TYPE STRING,
GZOLX_T TYPE STRING,
P_BETOL TYPE STRING,
P_EULIF TYPE STRING,
P_ANSCH TYPE STRING,
P_MAHNE TYPE STRING,
P_MAXMA TYPE STRING,
P_ANTXT TYPE STRING,
P_MATXT TYPE STRING,
P_SPRAS TYPE STRING,
P_SHOWL TYPE STRING,
P_PREIS TYPE STRING,
P_WAERS TYPE STRING,
P_BETPR TYPE STRING,
P_DRUCK TYPE STRING,
P_DOCSP TYPE STRING,
P_NEWPG TYPE STRING,
P_EKVER TYPE STRING,
P_DPATH TYPE STRING,
P_POPUP TYPE STRING,
P_NOPRE TYPE STRING,
P_OUTPT TYPE STRING,
P_LIEF TYPE STRING,
P_CHKFK TYPE STRING,
P_MATNR_PRE TYPE STRING,
P_ESOKZ TYPE STRING,
P_EKNOR TYPE STRING,
P_EKKON TYPE STRING,
P_EKLOB TYPE STRING,
P_EKPIP TYPE STRING,
P_USEPR TYPE STRING,
P_ZONES TYPE STRING,END OF T_EKKO_STR.
DATA: WA_FTPRE_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_FTPRE_STR-P_SIMUL sy-vline 
WA_FTPRE_STR-PRENE_T sy-vline 
WA_FTPRE_STR-GZOLX_T sy-vline 
WA_FTPRE_STR-P_BETOL sy-vline 
WA_FTPRE_STR-P_EULIF sy-vline 
WA_FTPRE_STR-P_ANSCH sy-vline 
WA_FTPRE_STR-P_MAHNE sy-vline 
WA_FTPRE_STR-P_MAXMA sy-vline 
WA_FTPRE_STR-P_ANTXT sy-vline 
WA_FTPRE_STR-P_MATXT sy-vline 
WA_FTPRE_STR-P_SPRAS sy-vline 
WA_FTPRE_STR-P_SHOWL sy-vline 
WA_FTPRE_STR-P_PREIS sy-vline 
WA_FTPRE_STR-P_WAERS sy-vline 
WA_FTPRE_STR-P_BETPR sy-vline 
WA_FTPRE_STR-P_DRUCK sy-vline 
WA_FTPRE_STR-P_DOCSP sy-vline 
WA_FTPRE_STR-P_NEWPG sy-vline 
WA_FTPRE_STR-P_EKVER sy-vline 
WA_FTPRE_STR-P_DPATH sy-vline 
WA_FTPRE_STR-P_POPUP sy-vline 
WA_FTPRE_STR-P_NOPRE sy-vline 
WA_FTPRE_STR-P_OUTPT sy-vline 
WA_FTPRE_STR-P_LIEF sy-vline 
WA_FTPRE_STR-P_CHKFK sy-vline 
WA_FTPRE_STR-P_MATNR_PRE sy-vline 
WA_FTPRE_STR-P_ESOKZ sy-vline 
WA_FTPRE_STR-P_EKNOR sy-vline 
WA_FTPRE_STR-P_EKKON sy-vline 
WA_FTPRE_STR-P_EKLOB sy-vline 
WA_FTPRE_STR-P_EKPIP sy-vline 
WA_FTPRE_STR-P_USEPR sy-vline 
WA_FTPRE_STR-P_ZONES sy-vline      INTO ld_text SEPARATED BY SPACE.

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