ABAP Select data from SAP table IFLOUSRD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IFLOUSRD
*  INTO TABLE @DATA(IT_IFLOUSRD2).
*--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_IFLOUSRD INDEX 1 INTO DATA(WA_IFLOUSRD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IFLOUSRD>-MANDT = 1.
<IFLOUSRD>-UNAME = 1.
<IFLOUSRD>-VARNT = 1.
<IFLOUSRD>-VARTX = 1.
<IFLOUSRD>-ACTIV = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IFLOUSRD-ALKEY, sy-vline,
  WA_IFLOUSRD-TPLKZ, sy-vline,
  WA_IFLOUSRD-GENHD, sy-vline,
  WA_IFLOUSRD-SHOWH, sy-vline,
  WA_IFLOUSRD-SHORT, sy-vline,
  WA_IFLOUSRD-MARK, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IFLOUSRD 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_IFLOUSRD 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_IFLOUSRD INTO WA_IFLOUSRD.


*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_IFLOUSRD_STR, 
MANDT TYPE STRING,
UNAME TYPE STRING,
VARNT TYPE STRING,
VARTX TYPE STRING,
ACTIV TYPE STRING,
ALKEY TYPE STRING,
TPLKZ TYPE STRING,
GENHD TYPE STRING,
SHOWH TYPE STRING,
SHORT TYPE STRING,
MARK TYPE STRING,
ALTXT TYPE STRING,
EDITM TYPE STRING,
STUFM TYPE STRING,
TPLXT TYPE STRING,
BEAKZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IFLOUSRD_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_IFLOUSRD_STR-MANDT sy-vline 
WA_IFLOUSRD_STR-UNAME sy-vline 
WA_IFLOUSRD_STR-VARNT sy-vline 
WA_IFLOUSRD_STR-VARTX sy-vline 
WA_IFLOUSRD_STR-ACTIV sy-vline 
WA_IFLOUSRD_STR-ALKEY sy-vline 
WA_IFLOUSRD_STR-TPLKZ sy-vline 
WA_IFLOUSRD_STR-GENHD sy-vline 
WA_IFLOUSRD_STR-SHOWH sy-vline 
WA_IFLOUSRD_STR-SHORT sy-vline 
WA_IFLOUSRD_STR-MARK sy-vline 
WA_IFLOUSRD_STR-ALTXT sy-vline 
WA_IFLOUSRD_STR-EDITM sy-vline 
WA_IFLOUSRD_STR-STUFM sy-vline 
WA_IFLOUSRD_STR-TPLXT sy-vline 
WA_IFLOUSRD_STR-BEAKZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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