ABAP Select data from SAP table IFLO_HELD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IFLO_HELD
*  INTO TABLE @DATA(IT_IFLO_HELD2).
*--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_IFLO_HELD INDEX 1 INTO DATA(WA_IFLO_HELD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IFLO_HELD>-FL1 = 1.
<IFLO_HELD>-FL2 = 1.
<IFLO_HELD>-FL3 = 1.
<IFLO_HELD>-FL4 = 1.
<IFLO_HELD>-FL5 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IFLO_HELD-FL6, sy-vline,
  WA_IFLO_HELD-FL7, sy-vline,
  WA_IFLO_HELD-FL8, sy-vline,
  WA_IFLO_HELD-FL9, sy-vline,
  WA_IFLO_HELD-FL10, sy-vline,
  WA_IFLO_HELD-FL11, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IFLO_HELD 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_IFLO_HELD 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_IFLO_HELD INTO WA_IFLO_HELD.


*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_IFLO_HELD_STR, 
FL1 TYPE STRING,
FL2 TYPE STRING,
FL3 TYPE STRING,
FL4 TYPE STRING,
FL5 TYPE STRING,
FL6 TYPE STRING,
FL7 TYPE STRING,
FL8 TYPE STRING,
FL9 TYPE STRING,
FL10 TYPE STRING,
FL11 TYPE STRING,
FL12 TYPE STRING,
FL13 TYPE STRING,
FL14 TYPE STRING,
FL15 TYPE STRING,
FL16 TYPE STRING,
FL17 TYPE STRING,
FL18 TYPE STRING,
FL19 TYPE STRING,
FL20 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IFLO_HELD_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_IFLO_HELD_STR-FL1 sy-vline 
WA_IFLO_HELD_STR-FL2 sy-vline 
WA_IFLO_HELD_STR-FL3 sy-vline 
WA_IFLO_HELD_STR-FL4 sy-vline 
WA_IFLO_HELD_STR-FL5 sy-vline 
WA_IFLO_HELD_STR-FL6 sy-vline 
WA_IFLO_HELD_STR-FL7 sy-vline 
WA_IFLO_HELD_STR-FL8 sy-vline 
WA_IFLO_HELD_STR-FL9 sy-vline 
WA_IFLO_HELD_STR-FL10 sy-vline 
WA_IFLO_HELD_STR-FL11 sy-vline 
WA_IFLO_HELD_STR-FL12 sy-vline 
WA_IFLO_HELD_STR-FL13 sy-vline 
WA_IFLO_HELD_STR-FL14 sy-vline 
WA_IFLO_HELD_STR-FL15 sy-vline 
WA_IFLO_HELD_STR-FL16 sy-vline 
WA_IFLO_HELD_STR-FL17 sy-vline 
WA_IFLO_HELD_STR-FL18 sy-vline 
WA_IFLO_HELD_STR-FL19 sy-vline 
WA_IFLO_HELD_STR-FL20 sy-vline      INTO ld_text SEPARATED BY SPACE.

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